一、简介
在线教育开发平台，仿：https://www.luffycity.com/home
开发过程，详细内容：地址
vue + rest framework 前后端分离得项目
1. 用户登录，认证
2. 查看课程页面，课程详细列表，查看文章页面
3. 购物车，支付中心，生成订单...接口开发
CC上传视频，点播（https://www.bokecc.com/）申请，上传，自己就可以写页面，播放视频；
支付宝支付，详细内容：见 http://www.cnblogs.com/alice-bj/articles/9399334.html
微信消息推送，详细内容：见 http://www.cnblogs.com/alice-bj/articles/9401858.html
接口得开发：
1. 查询所有得课程
2. 查询课程详细
3. 用户登录
4. 登录之后，才能访问； 权限组件，与文章相关得接口
5. 对文章评论、点赞、收藏得接口
6. 与购物车相关得接口 - 数据存在 - redis中
post、get、delete、put请求
7. 与支付中心相关得接口 - redis中
post、get、patch请求
8. 生成订单得接口 - 存到数据库中
post请求
二、数据库
分类：
与课程相关
与文章相关
与用户相关
与奖惩相关
与优惠劵，支付相关
from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation from django.contrib.contenttypes.models import ContentType from django.db.models import Q from django.utils.safestring import mark_safe from django.db import models import hashlib # ######################## 课程相关 ######################## class CourseCategory(models.Model): """课程大类, e.g 前端 后端...""" name = models.CharField(max_length=64, unique=True) def __str__(self): return "%s" % self.name class Meta: verbose_name_plural = "01.课程大类" class CourseSubCategory(models.Model): """课程子类, e.g python linux """ category = models.ForeignKey("CourseCategory") name = models.CharField(max_length=64, unique=True) def __str__(self): return "%s" % self.name class Meta: verbose_name_plural = "02.课程子类" class DegreeCourse(models.Model): """学位课程""" name = models.CharField(max_length=128, unique=True) course_img = models.CharField(max_length=255, verbose_name="缩略图") brief = models.TextField(verbose_name="学位课程简介", ) total_scholarship = models.PositiveIntegerField(verbose_name="总奖学金(贝里)", default=40000) mentor_compensation_bonus = models.PositiveIntegerField(verbose_name="本课程的导师辅导费用(贝里)", default=15000) period = models.PositiveIntegerField(verbose_name="建议学习周期(days)", default=150) # 为了计算学位奖学金 prerequisite = models.TextField(verbose_name="课程先修要求", max_length=1024) teachers = models.ManyToManyField("Teacher", verbose_name="课程讲师") # 用于GenericForeignKey反向查询， 不会生成表字段，切勿删除 coupon = GenericRelation("Coupon") # 用于GenericForeignKey反向查询，不会生成表字段，切勿删除 degreecourse_price_policy = GenericRelation("PricePolicy") def __str__(self): return self.name class Meta: verbose_name_plural = "03.学位课" class Teacher(models.Model): """讲师、导师表""" name = models.CharField(max_length=32) role_choices = ((0, '讲师'), (1, '导师')) role = models.SmallIntegerField(choices=role_choices, default=0) title = models.CharField(max_length=64, verbose_name="职位、职称") signature = models.CharField(max_length=255, help_text="导师签名", blank=True, null=True) image = models.CharField(max_length=128) brief = models.TextField(max_length=1024) def __str__(self): return self.name class Meta: verbose_name_plural = "04.导师或讲师" class Scholarship(models.Model): """学位课程奖学金""" degree_course = models.ForeignKey("DegreeCourse") time_percent = models.PositiveSmallIntegerField(verbose_name="奖励档位(时间百分比)", help_text="只填百分值，如80,代表80%") value = models.PositiveIntegerField(verbose_name="奖学金数额") def __str__(self): return "%s:%s" % (self.degree_course, self.value) class Meta: verbose_name_plural = "05.学位课奖学金" class Course(models.Model): """课程""" name = models.CharField(max_length=128, unique=True) course_img = models.CharField(max_length=255) sub_category = models.ForeignKey("CourseSubCategory") course_type_choices = ((0, '付费'), (1, 'VIP专享'), (2, '学位课程')) course_type = models.SmallIntegerField(choices=course_type_choices) degree_course = models.ForeignKey("DegreeCourse", blank=True, null=True, help_text="若是学位课程，此处关联学位表") brief = models.TextField(verbose_name="课程概述", max_length=2048) level_choices = ((0, '初级'), (1, '中级'), (2, '高级')) level = models.SmallIntegerField(choices=level_choices, default=1) pub_date = models.DateField(verbose_name="发布日期", blank=True, null=True) period = models.PositiveIntegerField(verbose_name="建议学习周期(days)", default=7) order = models.IntegerField("课程顺序", help_text="从上一个课程数字往后排") attachment_path = models.CharField(max_length=128, verbose_name="课件路径", blank=True, null=True) status_choices = ((0, '上线'), (1, '下线'), (2, '预上线')) status = models.SmallIntegerField(choices=status_choices, default=0) template_id = models.SmallIntegerField("前端模板id", default=1) coupon = GenericRelation("Coupon") # 用于GenericForeignKey反向查询，不会生成表字段，切勿删除 price_policy = GenericRelation("PricePolicy") asked_question = GenericRelation("OftenAskedQuestion") def __str__(self): return "%s(%s)" % (self.name, self.get_course_type_display()) def save(self, *args, **kwargs): if self.course_type == 2: if not self.degree_course: raise ValueError("学位课程必须关联对应的学位表") super(Course, self).save(*args, **kwargs) class Meta: verbose_name_plural = "06.专题课或学位课模块" class CourseDetail(models.Model): """课程详情页内容""" course = models.OneToOneField("Course") hours = models.IntegerField("课时") course_slogan = models.CharField(max_length=125, blank=True, null=True) video_brief_link = models.CharField(verbose_name='课程介绍', max_length=255, blank=True, null=True) why_study = models.TextField(verbose_name="为什么学习这门课程") what_to_study_brief = models.TextField(verbose_name="我将学到哪些内容") career_improvement = models.TextField(verbose_name="此项目如何有助于我的职业生涯") prerequisite = models.TextField(verbose_name="课程先修要求", max_length=1024) recommend_courses = models.ManyToManyField("Course", related_name="recommend_by", blank=True) teachers = models.ManyToManyField("Teacher", verbose_name="课程讲师") def __str__(self): return "%s" % self.course class Meta: verbose_name_plural = "07.课程或学位模块详细" class OftenAskedQuestion(models.Model): """常见问题""" content_type = models.ForeignKey(ContentType, limit_choices_to={'model__contains': 'course'}) # 关联course or degree_course object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') question = models.CharField(max_length=255) answer = models.TextField(max_length=1024) def __str__(self): return "%s-%s" % (self.content_object, self.question) class Meta: unique_together = ('content_type', 'object_id', 'question') verbose_name_plural = "08. 常见问题" class CourseOutline(models.Model): """课程大纲""" course_detail = models.ForeignKey("CourseDetail") title = models.CharField(max_length=128) # 前端显示顺序 order = models.PositiveSmallIntegerField(default=1) content = models.TextField("内容", max_length=2048) def __str__(self): return "%s" % self.title class Meta: unique_together = ('course_detail', 'title') verbose_name_plural = "09. 课程大纲" class CourseChapter(models.Model): """课程章节""" course = models.ForeignKey("Course", related_name='coursechapters') chapter = models.SmallIntegerField(verbose_name="第几章", default=1) name = models.CharField(max_length=128) summary = models.TextField(verbose_name="章节介绍", blank=True, null=True) pub_date = models.DateField(verbose_name="发布日期", auto_now_add=True) class Meta: unique_together = ("course", 'chapter') verbose_name_plural = "10. 课程章节" def __str__(self): return "%s:(第%s章)%s" % (self.course, self.chapter, self.name) class CourseSection(models.Model): """课时目录""" chapter = models.ForeignKey("CourseChapter", related_name='coursesections') name = models.CharField(max_length=128) order = models.PositiveSmallIntegerField(verbose_name="课时排序", help_text="建议每个课时之间空1至2个值，以备后续插入课时") section_type_choices = ((0, '文档'), (1, '练习'), (2, '视频')) section_type = models.SmallIntegerField(default=2, choices=section_type_choices) section_link = models.CharField(max_length=255, blank=True, null=True, help_text="若是video，填vid,若是文档，填link") video_time = models.CharField(verbose_name="视频时长", blank=True, null=True, max_length=32) # 仅在前端展示使用 pub_date = models.DateTimeField(verbose_name="发布时间", auto_now_add=True) free_trail = models.BooleanField("是否可试看", default=False) class Meta: unique_together = ('chapter', 'section_link') verbose_name_plural = "11. 课时" def __str__(self): return "%s-%s" % (self.chapter, self.name) class Homework(models.Model): chapter = models.ForeignKey("CourseChapter") title = models.CharField(max_length=128, verbose_name="作业题目") order = models.PositiveSmallIntegerField("作业顺序", help_text="同一课程的每个作业之前的order值间隔1-2个数") homework_type_choices = ((0, '作业'), (1, '模块通关考核')) homework_type = models.SmallIntegerField(choices=homework_type_choices, default=0) requirement = models.TextField(max_length=1024, verbose_name="作业需求") threshold = models.TextField(max_length=1024, verbose_name="踩分点") recommend_period = models.PositiveSmallIntegerField("推荐完成周期(天)", default=7) scholarship_value = models.PositiveSmallIntegerField("为该作业分配的奖学金(贝里)") note = models.TextField(blank=True, null=True) enabled = models.BooleanField(default=True, help_text="本作业如果后期不需要了，不想让学员看到，可以设置为False") class Meta: unique_together = ("chapter", "title") verbose_name_plural = "12. 章节作业" def __str__(self): return "%s - %s" % (self.chapter, self.title) class CourseReview(models.Model): """课程评价""" enrolled_course = models.OneToOneField("EnrolledCourse") about_teacher = models.FloatField(default=0, verbose_name="讲师讲解是否清晰") about_video = models.FloatField(default=0, verbose_name="内容实用") about_course = models.FloatField(default=0, verbose_name="课程内容通俗易懂") review = models.TextField(max_length=1024, verbose_name="评价") disagree_number = models.IntegerField(default=0, verbose_name="踩") agree_number = models.IntegerField(default=0, verbose_name="赞同数") tags = models.ManyToManyField("Tags", blank=True, verbose_name="标签") date = models.DateTimeField(auto_now_add=True, verbose_name="评价日期") is_recommend = models.BooleanField("热评推荐", default=False) hide = models.BooleanField("不在前端页面显示此条评价", default=False) def __str__(self): return "%s-%s" % (self.enrolled_course.course, self.review) class Meta: verbose_name_plural = "13. 课程评价（购买课程后才能评价）" class DegreeCourseReview(models.Model): """学位课程评价 为了以后可以定制单独的评价内容，所以不与普通课程的评价混在一起，单独建表 """ enrolled_course = models.ForeignKey("EnrolledDegreeCourse") course = models.ForeignKey("Course", verbose_name="评价学位模块", blank=True, null=True, help_text="不填写即代表评价整个学位课程", limit_choices_to={'course_type': 2}) about_teacher = models.FloatField(default=0, verbose_name="讲师讲解是否清晰") about_video = models.FloatField(default=0, verbose_name="视频质量") about_course = models.FloatField(default=0, verbose_name="课程") review = models.TextField(max_length=1024, verbose_name="评价") disagree_number = models.IntegerField(default=0, verbose_name="踩") agree_number = models.IntegerField(default=0, verbose_name="赞同数") tags = models.ManyToManyField("Tags", blank=True, verbose_name="标签") date = models.DateTimeField(auto_now_add=True, verbose_name="评价日期") is_recommend = models.BooleanField("热评推荐", default=False) hide = models.BooleanField("不在前端页面显示此条评价", default=False) def __str__(self): return "%s-%s" % (self.enrolled_course, self.review) class Meta: verbose_name_plural = "14. 学位课评价（购买课程后才能评价）" class PricePolicy(models.Model): """价格与有课程效期表""" content_type = models.ForeignKey(ContentType) # 关联course or degree_course object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') # course = models.ForeignKey("Course") valid_period_choices = ((1, '1天'), (3, '3天'), (7, '1周'), (14, '2周'), (30, '1个月'), (60, '2个月'), (90, '3个月'), (180, '6个月'), (210, '12个月'), (540, '18个月'), (720, '24个月'), ) valid_period = models.SmallIntegerField(choices=valid_period_choices) price = models.FloatField() class Meta: unique_together = ("content_type", 'object_id', "valid_period") verbose_name_plural = "15. 价格策略" def __str__(self): return "%s(%s)%s" % (self.content_object, self.get_valid_period_display(), self.price) # ######################## 深科技相关 ######################## class ArticleSource(models.Model): """文章来源""" name = models.CharField(max_length=64, unique=True) class Meta: verbose_name_plural = "16. 文章来源" def __str__(self): return self.name class Article(models.Model): """文章资讯""" title = models.CharField(max_length=255, unique=True, db_index=True, verbose_name="标题") source = models.ForeignKey("ArticleSource", verbose_name="来源") article_type_choices = ((0, '资讯'), (1, '视频')) article_type = models.SmallIntegerField(choices=article_type_choices, default=0) brief = models.TextField(max_length=512, verbose_name="摘要") head_img = models.CharField(max_length=255) content = models.TextField(verbose_name="文章正文") pub_date = models.DateTimeField(verbose_name="上架日期") offline_date = models.DateTimeField(verbose_name="下架日期") status_choices = ((0, '在线'), (1, '下线')) status = models.SmallIntegerField(choices=status_choices, default=0, verbose_name="状态") order = models.SmallIntegerField(default=0, verbose_name="权重", help_text="文章想置顶，可以把数字调大，不要超过1000") vid = models.CharField(max_length=128, verbose_name="视频VID", help_text="文章类型是视频, 则需要添加视频VID", blank=True, null=True) comment_num = models.SmallIntegerField(default=0, verbose_name="评论数") agree_num = models.SmallIntegerField(default=0, verbose_name="点赞数") view_num = models.SmallIntegerField(default=0, verbose_name="观看数") collect_num = models.SmallIntegerField(default=0, verbose_name="收藏数") tags = models.ManyToManyField("Tags", blank=True, verbose_name="标签") date = models.DateTimeField(auto_now_add=True, verbose_name="创建日期") position_choices = ((0, '信息流'), (1, 'banner大图'), (2, 'banner小图')) position = models.SmallIntegerField(choices=position_choices, default=0, verbose_name="位置") comment = GenericRelation("Comment") # 用于GenericForeignKey反向查询， 不会生成表字段，切勿删除，如有疑问请联系老村长 class Meta: verbose_name_plural = "17. 文章" def __str__(self): return "%s-%s" % (self.source, self.title) class Collection(models.Model): """收藏""" content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') account = models.ForeignKey("Account") date = models.DateTimeField(auto_now_add=True) class Meta: unique_together = ('content_type', 'object_id', 'account') verbose_name_plural = "18. 通用收藏表" class Comment(models.Model): """通用的评论表""" content_type = models.ForeignKey(ContentType, blank=True, null=True, verbose_name="类型") object_id = models.PositiveIntegerField(blank=True, null=True) content_object = GenericForeignKey('content_type', 'object_id') p_node = models.ForeignKey("self", blank=True, null=True, verbose_name="父级评论") content = models.TextField(max_length=1024) account = models.ForeignKey("Account", verbose_name="会员名") disagree_number = models.IntegerField(default=0, verbose_name="踩") agree_number = models.IntegerField(default=0, verbose_name="赞同数") date = models.DateTimeField(auto_now_add=True) def __str__(self): return self.content class Meta: verbose_name_plural = "19. 通用评论表" # ######################## 用户账户相关 ######################## class Tags(models.Model): tag_type_choices = ((0, '文章标签'), (1, '课程评价标签'), (2, '用户感兴趣技术标签')) tag_type = models.SmallIntegerField(choices=tag_type_choices) name = models.CharField(max_length=64, unique=True, db_index=True) class Meta: verbose_name_plural = "20. Tag标签" def __str__(self): return self.name class MentorGroup(models.Model): """导师组""" name = models.CharField(max_length=64, unique=True) brief = models.TextField(blank=True, null=True) mentors = models.ManyToManyField("Account", limit_choices_to={'role': 1}) class Meta: verbose_name_plural = "21. 导师组" def __str__(self): return self.name class Account(models.Model): username = models.CharField("用户名", max_length=64, unique=True) email = models.EmailField( verbose_name='email address', max_length=255, unique=True, blank=True, null=True ) uid = models.CharField(max_length=64, unique=True, help_text='微信用户绑定和CC视频统计') # 与第3方交互用户信息时，用这个uid,以避免泄露敏感用户信息 mobile = models.BigIntegerField(verbose_name="手机", unique=True, help_text="用于手机验证码登录") qq = models.CharField(verbose_name="QQ", max_length=64, blank=True, null=True, db_index=True) weixin = models.CharField(max_length=128, blank=True, null=True, db_index=True, verbose_name="微信") profession = models.ForeignKey("Profession", verbose_name="职位信息", blank=True, null=True) # 职位相关信息，注册时必选 tags = models.ManyToManyField("Tags", blank=True, verbose_name="感兴趣的标签") city = models.ForeignKey("City", verbose_name="城市", blank=True, null=True) # 所在城市，注册时必填, 通过城市能找到对应的省份 signature = models.CharField('个人签名', blank=True, null=True, max_length=255) brief = models.TextField("个人介绍", blank=True, null=True) openid = models.CharField(max_length=128, blank=True, null=True) gender_choices = ((0, '保密'), (1, '男'), (2, '女')) gender = models.SmallIntegerField(choices=gender_choices, default=0, verbose_name="性别") degree_choices = ((0, "学历"), (1, '高中以下'), (2, '中专／高中'), (3, '大专'), (4, '本科'), (5, '硕士'), (6, '博士')) degree = models.PositiveSmallIntegerField(choices=degree_choices, blank=True, null=True, default=0, verbose_name="学历") birthday = models.DateField(blank=True, null=True, verbose_name="生日") id_card = models.CharField(max_length=32, blank=True, null=True, verbose_name="身份证号或护照号") password = models.CharField('password', max_length=128, help_text=mark_safe('''<a class='btn-link' href='password'>重置密码</a>''')) is_active = models.BooleanField(default=True, verbose_name="账户状态") is_staff = models.BooleanField(verbose_name='staff status', default=False, help_text='决定着用户是否可登录管理后台') name = models.CharField(max_length=32, default="", verbose_name="真实姓名") head_img = models.CharField(max_length=128, default='/static/frontend/head_portrait/logo@2x.png', verbose_name="个人头像") role_choices = ((0, '学员'), (1, '导师'), (2, '讲师'), (3, '管理员')) role = models.SmallIntegerField(choices=role_choices, default=0, verbose_name="角色") # 贝里余额 balance = models.PositiveIntegerField(default=0, verbose_name="可提现和使用余额") memo = models.TextField('备注', blank=True, null=True, default=None) date_joined = models.DateTimeField(auto_now_add=True, verbose_name="注册时间") class Meta: verbose_name_plural = "22. 账户信息" def save(self, *args, **kwargs): if not self.pk: # This code only happens if the objects is not in the database yet. Otherwise it would have pk m = hashlib.md5() m.update(self.username.encode(encoding="utf-8")) self.uid = m.hexdigest() super(Account, self).save(*args, **kwargs) def __str__(self): return self.username class UserAuthToken(models.Model): """ 用户Token表 """ user = models.OneToOneField(to="Account") token = models.CharField(max_length=40, unique=True) created = models.DateTimeField(auto_now_add=True) class Meta: verbose_name_plural = "23. 用户Token" def save(self, *args, **kwargs): import datetime # 根据用户名和时间生成唯一标识 self.token = self.generate_key() self.created = datetime.datetime.utcnow() return super(UserAuthToken, self).save(*args, **kwargs) def generate_key(self): import datetime """根据用户名和时间生成唯一标识""" username = self.user.name now = str(datetime.datetime.now()).encode('utf-8') md5 = hashlib.md5(username.encode('utf-8')) md5.update(now) return md5.hexdigest() class Province(models.Model): """ 省份表 """ code = models.IntegerField(verbose_name="省代码", unique=True) name = models.CharField(max_length=64, verbose_name="省名称", unique=True) def __str__(self): return "{} - {}".format(self.code, self.name) class Meta: verbose_name_plural = "24. 省" class City(models.Model): """ 城市表 """ code = models.IntegerField(verbose_name="市", unique=True) name = models.CharField(max_length=64, verbose_name="市名称") # 城市名可能有重复 province = models.ForeignKey("Province") def __str__(self): return "{} - {}".format(self.code, self.name) class Meta: verbose_name_plural = "25. 市" class Industry(models.Model): """ 行业表 """ code = models.IntegerField(verbose_name="行业代码", unique=True) name = models.CharField(max_length=64, verbose_name="行业名称") def __str__(self): return "{} - {}".format(self.code, self.name) class Meta: verbose_name_plural = "26. 行业信息" class Profession(models.Model): """ 职位表，与行业表外键关联 """ code = models.IntegerField(verbose_name="职位代码") name = models.CharField(max_length=64, verbose_name="职位名称") industry = models.ForeignKey("Industry") def __str__(self): return "{} - {}".format(self.code, self.name) class Meta: unique_together = ("code", "industry") verbose_name_plural = "27. 职位信息" class Feedback(models.Model): """用户反馈表""" name = models.CharField(max_length=32, blank=True, null=True) contact = models.CharField(max_length=64, blank=True, null=True) feedback_type_choices = ((0, '网站优化建议'), (1, '烂!我想吐槽'), (2, '网站bug反馈')) feedback_type = models.SmallIntegerField(choices=feedback_type_choices) content = models.TextField(max_length=1024) date = models.DateTimeField(auto_now_add=True) class Meta: verbose_name_plural = "28. 用户反馈" def __str__(self): return self.name # ######################## 奖惩相关 ######################## class ScoreRule(models.Model): """积分规则""" score_rule_choices = ( (0, '未按时交作业'), (1, '未及时批改作业'), (2, '作业成绩'), (3, '未在规定时间内对学员进行跟进'), (4, '未在规定时间内回复学员问题'), (5, '收到学员投诉'), (6, '导师相关'), (7, '学位奖学金'), ) rule = models.SmallIntegerField(choices=score_rule_choices, verbose_name="积分规则") score_type_choices = ((0, '奖励'), (1, '惩罚'), (2, '初始分配')) score_type = models.SmallIntegerField(choices=score_type_choices, verbose_name="奖惩", default=0) score = models.IntegerField(help_text="扣分数与贝里相等,若为0则代表规则的值可以从别处取得") # maturity_days = models.IntegerField("成熟周期", help_text="自纪录创建时开始计算") memo = models.TextField(blank=True, null=True) def __str__(self): return "%s-%s:%s" % (self.get_rule_display(), self.get_score_type_display(), self.score) class Meta: unique_together = ('rule', 'score_type') verbose_name_plural = "29. 奖惩规则" class ScoreRecord(models.Model): """积分奖惩记录""" content_type = models.ForeignKey(ContentType, blank=True, null=True) object_id = models.PositiveIntegerField(blank=True, null=True) content_object = GenericForeignKey('content_type', 'object_id') degree_course = models.ForeignKey("DegreeCourse", blank=True, null=True, verbose_name="关联学位课程") score_rule = models.ForeignKey("ScoreRule", verbose_name="关联规则") account = models.ForeignKey("Account", verbose_name="被执行人") score = models.IntegerField(verbose_name="金额(贝里)") # 这里单独有一个字段存积分而不是从score_rule里引用的原因是考虑到如果引用的话， # 一旦score_rule里的积分有变更，那么所有用户的历史积分也会被影响 received_score = models.IntegerField("实际到账金额贝里)", help_text="仅奖励用", default=0) balance = models.PositiveIntegerField(verbose_name="奖金余额(贝里)") maturity_date = models.DateField("成熟日期(可提现日期)") applied = models.BooleanField(default=False, help_text="奖赏纪录是否已被执行", verbose_name="是否已被执行") applied_date = models.DateTimeField(blank=True, null=True, verbose_name="事件生效日期") date = models.DateTimeField(auto_now_add=True, verbose_name="事件触发日期") memo = models.TextField(blank=True, null=True) def __str__(self): return "%s-%s - %s - %s 奖金余额:%s" % (self.id, self.score_rule, self.account, self.score, self.balance) class Meta: verbose_name_plural = "30. 奖惩记录" # ######################## 购买课程相关 ######################## class Coupon(models.Model): """优惠券生成规则""" name = models.CharField(max_length=64, verbose_name="活动名称") brief = models.TextField(blank=True, null=True, verbose_name="优惠券介绍") coupon_type_choices = ((0, '通用券'), (1, '满减券'), (2, '折扣券')) coupon_type = models.SmallIntegerField(choices=coupon_type_choices, default=0, verbose_name="券类型") money_equivalent_value = models.IntegerField(verbose_name="等值货币") off_percent = models.PositiveSmallIntegerField("折扣百分比", help_text="只针对折扣券，例7.9折，写79", blank=True, null=True) minimum_consume = models.PositiveIntegerField("最低消费", default=0, help_text="仅在满减券时填写此字段") content_type = models.ForeignKey(ContentType, blank=True, null=True) object_id = models.PositiveIntegerField("绑定课程", blank=True, null=True, help_text="可以把优惠券跟课程绑定") content_object = GenericForeignKey('content_type', 'object_id') quantity = models.PositiveIntegerField("数量(张)", default=1) open_date = models.DateField("优惠券领取开始时间") close_date = models.DateField("优惠券领取结束时间") valid_begin_date = models.DateField(verbose_name="有效期开始时间", blank=True, null=True) valid_end_date = models.DateField(verbose_name="有效结束时间", blank=True, null=True) coupon_valid_days = models.PositiveIntegerField(verbose_name="优惠券有效期（天）", blank=True, null=True, help_text="自券被领时开始算起") date = models.DateTimeField(auto_now_add=True) class Meta: verbose_name_plural = "31. 优惠券生成记录" def __str__(self): return "%s(%s)" % (self.get_coupon_type_display(), self.name) def save(self, *args, **kwargs): if not self.coupon_valid_days or (self.valid_begin_date and self.valid_end_date): if self.valid_begin_date and self.valid_end_date: if self.valid_end_date <= self.valid_begin_date: raise ValueError("valid_end_date 有效期结束日期必须晚于 valid_begin_date ") if self.coupon_valid_days == 0: raise ValueError("coupon_valid_days 有效期不能为0") if self.close_date < self.open_date: raise ValueError("close_date 优惠券领取结束时间必须晚于 open_date优惠券领取开始时间 ") super(Coupon, self).save(*args, **kwargs) class CouponRecord(models.Model): """优惠券发放、消费纪录""" coupon = models.ForeignKey("Coupon") number = models.CharField(max_length=64, unique=True) account = models.ForeignKey("Account", verbose_name="拥有者") status_choices = ((0, '未使用'), (1, '已使用'), (2, '已过期')) status = models.SmallIntegerField(choices=status_choices, default=0) get_time = models.DateTimeField(verbose_name="领取时间", help_text="用户领取时间") used_time = models.DateTimeField(blank=True, null=True, verbose_name="使用时间") order = models.ForeignKey("Order", blank=True, null=True, verbose_name="关联订单") # 一个订单可以有多个优惠券 class Meta: verbose_name_plural = "32. 用户优惠券" def __str__(self): return '%s-%s-%s' % (self.account, self.number, self.status) class CourseSchedule(models.Model): """课程进度计划表,针对学位课程，每开通一个模块，就为这个学员生成这个模块的推荐学习计划表，后面的奖惩均按此表进行""" study_record = models.ForeignKey("StudyRecord") homework = models.ForeignKey("Homework") recommend_date = models.DateField("推荐交作业日期") def __str__(self): return "%s - %s - %s " % (self.study_record, self.homework, self.recommend_date) class Meta: unique_together = ('study_record', 'homework') verbose_name_plural = "33. 课程模块计划表（学位课）" class EnrolledCourse(models.Model): """已报名课程,不包括学位课程""" account = models.ForeignKey("Account") course = models.ForeignKey("Course", limit_choices_to=~Q(course_type=2)) enrolled_date = models.DateTimeField(auto_now_add=True) valid_begin_date = models.DateField(verbose_name="有效期开始自") valid_end_date = models.DateField(verbose_name="有效期结束至") status_choices = ((0, '已开通'), (1, '已过期')) status = models.SmallIntegerField(choices=status_choices, default=0) order_detail = models.OneToOneField("OrderDetail") # 使订单购买后支持 课程评价 # order = models.ForeignKey("Order",blank=True,null=True) def __str__(self): return "%s:%s" % (self.account, self.course) class Meta: verbose_name_plural = "34. 报名专题课" class DegreeRegistrationForm(models.Model): """学位课程报名表""" enrolled_degree = models.OneToOneField("EnrolledDegreeCourse") current_company = models.CharField(max_length=64, ) current_position = models.CharField(max_length=64, ) current_salary = models.IntegerField() work_experience_choices = ((0, "应届生"), (1, "1年"), (2, "2年"), (3, "3年"), (4, "4年"), (5, "5年"), (6, "6年"), (7, "7年"), (8, "8年"), (9, "9年"), (10, "10年"), (11, "超过10年"), ) work_experience = models.IntegerField() open_module = models.BooleanField("是否开通第1模块", default=True) stu_specified_mentor = models.CharField("学员自行指定的导师名", max_length=32, blank=True, null=True) study_plan_choices = ((0, "1-2小时/天"), (1, "2-3小时/天"), (2, "3-5小时/天"), (3, "5小时+/天"), ) study_plan = models.SmallIntegerField(choices=study_plan_choices, default=1) why_take_this_course = models.TextField("报此课程原因", max_length=1024) why_choose_us = models.TextField("为何选路飞", max_length=1024) your_expectation = models.TextField("你的期待", max_length=1024) memo = models.CharField(max_length=255, blank=True, null=True) class Meta: verbose_name_plural = "35. 报名表（学位课）" def __str__(self): return "%s" % self.enrolled_degree class EnrolledDegreeCourse(models.Model): """已报名的学位课程""" account = models.ForeignKey("Account") degree_course = models.ForeignKey("DegreeCourse") enrolled_date = models.DateTimeField(auto_now_add=True) valid_begin_date = models.DateField(verbose_name="有效期开始自", blank=True, null=True) # 开通第一个模块时，再添加课程有效期，2年 valid_end_date = models.DateField(verbose_name="有效期结束至", blank=True, null=True) status_choices = ( (0, '在学中'), (1, '休学中'), (2, '已毕业'), (3, '超时结业'), (4, '未开始'), # (3, '其它'), ) study_status = models.SmallIntegerField(choices=status_choices, default=0) mentor = models.ForeignKey("Account", verbose_name="导师", related_name='my_students', blank=True, null=True, limit_choices_to={'role': 1}) mentor_fee_balance = models.PositiveIntegerField("导师费用余额", help_text="这个学员的导师费用，每有惩罚，需在此字段同时扣除") order_detail = models.OneToOneField("OrderDetail") # 使订单购买后支持填写报名表 def __str__(self): return "%s:%s" % (self.account, self.degree_course) class Meta: unique_together = ('account', 'degree_course') verbose_name_plural = "36. 报名学位课" class Order(models.Model): """订单""" payment_type_choices = ((0, '微信'), (1, '支付宝'), (2, '优惠码'), (3, '贝里')) payment_type = models.SmallIntegerField(choices=payment_type_choices) payment_number = models.CharField(max_length=128, verbose_name="支付第3方订单号", null=True, blank=True) order_number = models.CharField(max_length=128, verbose_name="订单号", unique=True) # 考虑到订单合并支付的问题 account = models.ForeignKey("Account") actual_amount = models.FloatField(verbose_name="实付金额") status_choices = ((0, '交易成功'), (1, '待支付'), (2, '退费申请中'), (3, '已退费'), (4, '主动取消'), (5, '超时取消')) status = models.SmallIntegerField(choices=status_choices, verbose_name="状态") date = models.DateTimeField(auto_now_add=True, verbose_name="订单生成时间") pay_time = models.DateTimeField(blank=True, null=True, verbose_name="付款时间") cancel_time = models.DateTimeField(blank=True, null=True, verbose_name="订单取消时间") class Meta: verbose_name_plural = "37. 订单表" def __str__(self): return "%s" % self.order_number class OrderDetail(models.Model): """订单详情""" order = models.ForeignKey("Order") content_type = models.ForeignKey(ContentType) # 可关联普通课程或学位 object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') original_price = models.FloatField("课程原价") price = models.FloatField("折后价格") content = models.CharField(max_length=255, blank=True, null=True) # ？ valid_period_display = models.CharField("有效期显示", max_length=32) # 在订单页显示 valid_period = models.PositiveIntegerField("有效期(days)") # 课程有效期 memo = models.CharField(max_length=255, blank=True, null=True) def __str__(self): return "%s - %s - %s" % (self.order, self.content_type, self.price) class Meta: verbose_name_plural = "38. 订单详细" unique_together = ("order", 'content_type', 'object_id') class StudyRecord(models.Model): """学位课程的模块学习进度，报名学位课程后，每个模块会立刻生成一条学习纪录""" enrolled_degree_course = models.ForeignKey("EnrolledDegreeCourse") course_module = models.ForeignKey("Course", verbose_name="学位模块", limit_choices_to={'course_type': 2}) open_date = models.DateField(blank=True, null=True, verbose_name="开通日期") end_date = models.DateField(blank=True, null=True, verbose_name="完成日期") status_choices = ((2, '在学'), (1, '未开通'), (0, '已完成')) status = models.SmallIntegerField(choices=status_choices, default=1) class Meta: verbose_name_plural = "39. 学习记录表（报名学位课程后，每个模块会立刻生成一条学习纪录）" unique_together = ('enrolled_degree_course', 'course_module') def __str__(self): return '%s-%s' % (self.enrolled_degree_course, self.course_module) def save(self, *args, **kwargs): if self.course_module.degree_course_id != self.enrolled_degree_course.degree_course_id: raise ValueError("学员要开通的模块必须与其报名的学位课程一致！") super(StudyRecord, self).save(*args, **kwargs) class TransactionRecord(models.Model): """贝里交易纪录""" account = models.ForeignKey("Account") amount = models.IntegerField("金额") #balance = models.IntegerField("账户余额") transaction_type_choices = ((0, '收入'), (1, '支出'), (2, '退款'), (3, "提现")) # 2 为了处理 订单过期未支付时，锁定期贝里的回退 transaction_type = models.SmallIntegerField(choices=transaction_type_choices) content_type = models.ForeignKey(ContentType, blank=True, null=True) object_id = models.PositiveIntegerField(blank=True, null=True, verbose_name="关联对象") content_object = GenericForeignKey('content_type', 'object_id') transaction_number = models.CharField(unique=True, verbose_name="流水号", max_length=128) date = models.DateTimeField(auto_now_add=True) memo = models.CharField(max_length=128, blank=True, null=True) class Meta: verbose_name_plural = "40. 贝里交易记录" def __str__(self): return "%s" % self.transaction_number class HomeworkRecord(models.Model): """学员作业记录及成绩""" homework = models.ForeignKey("Homework") student = models.ForeignKey("EnrolledDegreeCourse", verbose_name="学生") score_choices = ((100, 'A+'), (90, 'A'), (85, 'B+'), (80, 'B'), (70, 'B-'), (60, 'C+'), (50, 'C'), (40, 'C-'), (-1, 'D'), (0, 'N/A'), (-100, 'COPY'), ) score = models.SmallIntegerField(verbose_name="分数", choices=score_choices, null=True, blank=True) mentor = models.ForeignKey("Account", related_name="my_stu_homework_record", limit_choices_to={'role': 1}, verbose_name="导师") mentor_comment = models.TextField(verbose_name="导师批注", blank=True, null=True) # 导师 status_choice = ( (0, '待批改'), (1, '已通过'), (2, '不合格'), ) status = models.SmallIntegerField(verbose_name='作业状态', choices=status_choice, default=0) submit_num = models.SmallIntegerField(verbose_name='提交次数', default=0) correct_date = models.DateTimeField('备注日期', blank=True, null=True) note = models.TextField(blank=True, null=True) date = models.DateTimeField("作业提交日期", auto_now_add=True) check_date = models.DateTimeField("批改日期", null=True, blank=True) update_time = models.DateTimeField(auto_now=True, verbose_name="提交日期") # homework_path = models.CharField(verbose_name='作业路径', max_length=256,blank=True,null=True) 作业路径可以动态拿到，没必要存 reward_choice = ((0, '新提交'), (1, '按时提交'), (2, '未按时提交'), (3, '成绩已奖励'), (4, '成绩已处罚'), (5, '未作按时检测'), ) reward_status = models.SmallIntegerField(verbose_name='作业记录奖惩状态', default=0) def __str__(self): return "%s %s" % (self.homework, self.student) class Meta: verbose_name_plural = "41. 作业" unique_together = ("homework", "student") class StuFollowUpRecord(models.Model): """学员跟进记录""" enrolled_degree_course = models.ForeignKey("EnrolledDegreeCourse", verbose_name="学生") mentor = models.ForeignKey("Account", related_name='mentor', limit_choices_to={'role': 1}, verbose_name="导师") followup_tool_choices = ((0, 'QQ'), (1, '微信'), (2, '电话'), (3, '系统通知')) followup_tool = models.SmallIntegerField(choices=followup_tool_choices, default=1) record = models.TextField(verbose_name="跟进记录") attachment_path = models.CharField(max_length=128, blank=True, null=True, verbose_name="附件路径", help_text="跟进记录的截图等") date = models.DateTimeField(auto_now_add=True) class Meta: verbose_name_plural = "42. 学员跟进记录" def __str__(self): return "%s --%s --%s" % (self.enrolled_degree_course, self.record, self.date) class Question(models.Model): """课程提问""" name = models.CharField(max_length=128, blank=True, null=True, verbose_name="问题概要", db_index=True) question_type_choices = ((0, '专题课程问题'), (1, '学位课程问题')) question_type = models.SmallIntegerField(choices=question_type_choices, default=0, verbose_name="来源") account = models.ForeignKey("Account", verbose_name="提问者") degree_course = models.ForeignKey("DegreeCourse", blank=True, null=True) # 若是针对整个学位课程的提问，关联这个 course_section = models.ForeignKey("CourseSection", blank=True, null=True) # 针对整个学位课程的提问不需关联特定课时 content = models.TextField(max_length=1024, verbose_name="问题内容") enquiries_count = models.IntegerField(default=0, verbose_name="同问者计数") attachment_path = models.CharField(max_length=128, blank=True, null=True, verbose_name="附件路径", help_text="问题记录的截图等") date = models.DateTimeField(auto_now_add=True) status_choices = ((0, '待解答'), (1, '已解答'), (2, '已关闭')) status = models.SmallIntegerField(choices=status_choices, default=0) class Meta: verbose_name_plural = "43. 讨论区：课程提问" def __str__(self): return "%s" % self.name def save(self, *args, **kwargs): if self.degree_course is None and self.course_section is None: raise ValueError("提的问题必须关联学位课程或具体课时！") super(Question, self).save(*args, **kwargs) class Answer(models.Model): """问题解答""" question = models.ForeignKey("Question", verbose_name="问题") content = models.TextField(verbose_name="回答") account = models.ForeignKey("Account", verbose_name="回答者") agree_number = models.IntegerField(default=0, verbose_name="点赞数") disagree_number = models.IntegerField(default=0, verbose_name="点踩数") answer_date = models.DateTimeField(auto_now=True, verbose_name="日期") class Meta: verbose_name_plural = "44. 讨论区：解答" def __str__(self): return "%s" % self.question class AnswerComment(models.Model): """答案回复评论""" answer = models.ForeignKey("Answer") reply_to = models.ForeignKey("self", blank=True, null=True, verbose_name="基于评论的评论") comment = models.TextField(max_length=512, verbose_name="评论内容") attachment_path = models.CharField(max_length=128, blank=True, null=True, verbose_name="附件路径", help_text="跟进记录的截图等") account = models.ForeignKey("Account", verbose_name="评论者") date = models.DateTimeField(auto_now_add=True) class Meta: verbose_name_plural = "45. 讨论区：评论" def __str__(self): return "%s - %s" % (self.account, self.comment) class QACounter(models.Model): """ 问题和回答的赞同数量统计 """ content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') data_type_choices = ((0, '点赞'), (1, '踩'), (2, '同问')) data_type = models.SmallIntegerField(choices=data_type_choices) account = models.ForeignKey("Account") date = models.DateTimeField(auto_now=True) class Meta: verbose_name_plural = "46. 问题和回答的赞同数量统计" unique_together = ("content_type", 'object_id', "account")
from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation from django.contrib.contenttypes.models import ContentType from django.db import models from django.db.models import Q # ######################## 课程相关 ######################## class CourseCategory(models.Model): """课程大类, e.g 前端 后端...""" name = models.CharField(max_length=64, unique=True) def __str__(self): return "%s" % self.name class Meta: verbose_name_plural = "01.课程大类" class CourseSubCategory(models.Model): """课程子类, e.g python linux """ category = models.ForeignKey("CourseCategory") name = models.CharField(max_length=64, unique=True) def __str__(self): return "%s" % self.name class Meta: verbose_name_plural = "02.课程子类" class DegreeCourse(models.Model): """学位课程""" name = models.CharField(max_length=128, unique=True) course_img = models.CharField(max_length=255, verbose_name="缩略图") brief = models.TextField(verbose_name="学位课程简介", ) total_scholarship = models.PositiveIntegerField(verbose_name="总奖学金(贝里)", default=40000) mentor_compensation_bonus = models.PositiveIntegerField(verbose_name="本课程的导师辅导费用(贝里)", default=15000) period = models.PositiveIntegerField(verbose_name="建议学习周期(days)", default=150) # 为了计算学位奖学金 prerequisite = models.TextField(verbose_name="课程先修要求", max_length=1024) teachers = models.ManyToManyField("Teacher", verbose_name="课程讲师") # 用于GenericForeignKey反向查询， 不会生成表字段，切勿删除 # coupon = GenericRelation("Coupon") # 用于GenericForeignKey反向查询，不会生成表字段，切勿删除 degreecourse_price_policy = GenericRelation("PricePolicy") # 查询常见问题 asked_question = GenericRelation("OftenAskedQuestion") def __str__(self): return self.name class Meta: verbose_name_plural = "03.学位课" class Teacher(models.Model): """讲师、导师表""" name = models.CharField(max_length=32) role_choices = ((0, '讲师'), (1, '导师')) role = models.SmallIntegerField(choices=role_choices, default=0) title = models.CharField(max_length=64, verbose_name="职位、职称") signature = models.CharField(max_length=255, help_text="导师签名", blank=True, null=True) image = models.CharField(max_length=128) brief = models.TextField(max_length=1024) def __str__(self): return self.name class Meta: verbose_name_plural = "04.导师或讲师" class Scholarship(models.Model): """学位课程奖学金""" degree_course = models.ForeignKey("DegreeCourse") time_percent = models.PositiveSmallIntegerField(verbose_name="奖励档位(时间百分比)", help_text="只填百分值，如80,代表80%") value = models.PositiveIntegerField(verbose_name="奖学金数额") def __str__(self): return "%s:%s" % (self.degree_course, self.value) class Meta: verbose_name_plural = "05.学位课奖学金" class Course(models.Model): """专题课程 OR 学位课模块""" name = models.CharField(max_length=128, unique=True) # Python基础 course_img = models.CharField(max_length=255) sub_category = models.ForeignKey("CourseSubCategory") course_type_choices = ((0, '付费'), (1, 'VIP专享'), (2, '学位课程')) course_type = models.SmallIntegerField(choices=course_type_choices) degree_course = models.ForeignKey("DegreeCourse", blank=True, null=True, help_text="若是学位课程，此处关联学位表") brief = models.TextField(verbose_name="课程（模块）概述", max_length=2048) level_choices = ((0, '初级'), (1, '中级'), (2, '高级')) level = models.SmallIntegerField(choices=level_choices, default=1) pub_date = models.DateField(verbose_name="发布日期", blank=True, null=True) period = models.PositiveIntegerField(verbose_name="建议学习周期(days)", default=7) order = models.IntegerField("课程顺序", help_text="从上一个课程数字往后排") attachment_path = models.CharField(max_length=128, verbose_name="课件路径", blank=True, null=True) status_choices = ((0, '上线'), (1, '下线'), (2, '预上线')) status = models.SmallIntegerField(choices=status_choices, default=0) template_id = models.SmallIntegerField("前端模板id", default=1) # 如果是专题课时，获取相关优惠券 coupon = GenericRelation("Coupon") # 用于GenericForeignKey反向查询，不会生成表字段，切勿删除 price_policy = GenericRelation("PricePolicy") # 查询常见问题 asked_question = GenericRelation("OftenAskedQuestion") class Meta: verbose_name_plural = "06.专题课or学位课模块" def __str__(self): return self.name class CourseDetail(models.Model): """课程详情页内容""" course = models.OneToOneField("Course") hours = models.IntegerField("课时") course_slogan = models.CharField(max_length=125, blank=True, null=True) video_brief_link = models.CharField(verbose_name='课程介绍', max_length=255, blank=True, null=True) why_study = models.TextField(verbose_name="为什么学习这门课程") what_to_study_brief = models.TextField(verbose_name="我将学到哪些内容") career_improvement = models.TextField(verbose_name="此项目如何有助于我的职业生涯") prerequisite = models.TextField(verbose_name="课程先修要求", max_length=1024) recommend_courses = models.ManyToManyField("Course", related_name="recommend_by", blank=True) teachers = models.ManyToManyField("Teacher", verbose_name="课程讲师") def __str__(self): return "%s" % self.course class Meta: verbose_name_plural = "07.课程或学位模块详细" class OftenAskedQuestion(models.Model): """常见问题""" content_type = models.ForeignKey(ContentType) # 关联course or degree_course object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') question = models.CharField(max_length=255) answer = models.TextField(max_length=1024) def __str__(self): return "%s-%s" % (self.content_object, self.question) class Meta: unique_together = ('content_type', 'object_id', 'question') verbose_name_plural = "08. 常见问题" class CourseOutline(models.Model): """课程大纲""" course_detail = models.ForeignKey("CourseDetail") # 前端显示顺序 order = models.PositiveSmallIntegerField(default=1) title = models.CharField(max_length=128) content = models.TextField("内容", max_length=2048) def __str__(self): return "%s" % self.title class Meta: unique_together = ('course_detail', 'title') verbose_name_plural = "09. 课程大纲" class CourseChapter(models.Model): """课程章节""" course = models.ForeignKey("Course", related_name='coursechapters') chapter = models.SmallIntegerField(verbose_name="第几章", default=1) name = models.CharField(max_length=128) summary = models.TextField(verbose_name="章节介绍", blank=True, null=True) pub_date = models.DateField(verbose_name="发布日期", auto_now_add=True) class Meta: unique_together = ("course", 'chapter') verbose_name_plural = "10. 课程章节" def __str__(self): return "%s:(第%s章)%s" % (self.course, self.chapter, self.name) class CourseSection(models.Model): """课时目录""" chapter = models.ForeignKey("CourseChapter", related_name='coursesections') name = models.CharField(max_length=128) order = models.PositiveSmallIntegerField(verbose_name="课时排序", help_text="建议每个课时之间空1至2个值，以备后续插入课时") section_type_choices = ((0, '文档'), (1, '练习'), (2, '视频')) section_type = models.SmallIntegerField(default=2, choices=section_type_choices) # 59EE3275E977AADB9C33DC5901307461 section_link = models.CharField(max_length=255, blank=True, null=True, help_text="若是video，填vid,若是文档，填link") video_time = models.CharField(verbose_name="视频时长", blank=True, null=True, max_length=32) # 仅在前端展示使用 pub_date = models.DateTimeField(verbose_name="发布时间", auto_now_add=True) free_trail = models.BooleanField("是否可试看", default=False) class Meta: unique_together = ('chapter', 'section_link') verbose_name_plural = "11. 课时目录" def __str__(self): return "%s-%s" % (self.chapter, self.name) class Homework(models.Model): """章节作业""" chapter = models.ForeignKey("CourseChapter") title = models.CharField(max_length=128, verbose_name="作业题目") order = models.PositiveSmallIntegerField("作业顺序", help_text="同一课程的每个作业之前的order值间隔1-2个数") homework_type_choices = ((0, '作业'), (1, '模块通关考核')) homework_type = models.SmallIntegerField(choices=homework_type_choices, default=0) requirement = models.TextField(max_length=1024, verbose_name="作业需求") threshold = models.TextField(max_length=1024, verbose_name="踩分点") recommend_period = models.PositiveSmallIntegerField("推荐完成周期(天)", default=7) scholarship_value = models.PositiveSmallIntegerField("为该作业分配的奖学金(贝里)") note = models.TextField(blank=True, null=True) enabled = models.BooleanField(default=True, help_text="本作业如果后期不需要了，不想让学员看到，可以设置为False") class Meta: unique_together = ("chapter", "title") verbose_name_plural = "12. 章节作业" def __str__(self): return "%s - %s" % (self.chapter, self.title) # # class CourseReview(models.Model): # """课程评价""" # enrolled_course = models.OneToOneField("EnrolledCourse") # about_teacher = models.FloatField(default=0, verbose_name="讲师讲解是否清晰") # about_video = models.FloatField(default=0, verbose_name="内容实用") # about_course = models.FloatField(default=0, verbose_name="课程内容通俗易懂") # review = models.TextField(max_length=1024, verbose_name="评价") # disagree_number = models.IntegerField(default=0, verbose_name="踩") # agree_number = models.IntegerField(default=0, verbose_name="赞同数") # tags = models.ManyToManyField("Tags", blank=True, verbose_name="标签") # date = models.DateTimeField(auto_now_add=True, verbose_name="评价日期") # is_recommend = models.BooleanField("热评推荐", default=False) # hide = models.BooleanField("不在前端页面显示此条评价", default=False) # # def __str__(self): # return "%s-%s" % (self.enrolled_course.course, self.review) # # class Meta: # verbose_name_plural = "13. 课程评价（购买课程后才能评价）" # # # class DegreeCourseReview(models.Model): # """学位课程评价 # 为了以后可以定制单独的评价内容，所以不与普通课程的评价混在一起，单独建表 # """ # enrolled_course = models.ForeignKey("EnrolledDegreeCourse") # course = models.ForeignKey("Course", verbose_name="评价学位模块", blank=True, null=True, # help_text="不填写即代表评价整个学位课程", limit_choices_to={'course_type': 2}) # about_teacher = models.FloatField(default=0, verbose_name="讲师讲解是否清晰") # about_video = models.FloatField(default=0, verbose_name="视频质量") # about_course = models.FloatField(default=0, verbose_name="课程") # review = models.TextField(max_length=1024, verbose_name="评价") # disagree_number = models.IntegerField(default=0, verbose_name="踩") # agree_number = models.IntegerField(default=0, verbose_name="赞同数") # tags = models.ManyToManyField("Tags", blank=True, verbose_name="标签") # date = models.DateTimeField(auto_now_add=True, verbose_name="评价日期") # is_recommend = models.BooleanField("热评推荐", default=False) # hide = models.BooleanField("不在前端页面显示此条评价", default=False) # # def __str__(self): # return "%s-%s" % (self.enrolled_course, self.review) # # class Meta: # verbose_name_plural = "14. 学位课评价（购买课程后才能评价）" # class PricePolicy(models.Model): """价格与有课程效期表""" content_type = models.ForeignKey(ContentType) # 关联course or degree_course object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') # course = models.ForeignKey("Course") valid_period_choices = ((1, '1天'), (3, '3天'), (7, '1周'), (14, '2周'), (30, '1个月'), (60, '2个月'), (90, '3个月'), (180, '6个月'), (210, '12个月'), (540, '18个月'), (720, '24个月'), ) valid_period = models.SmallIntegerField(choices=valid_period_choices) price = models.FloatField() class Meta: unique_together = ("content_type", 'object_id', "valid_period") verbose_name_plural = "15. 价格策略" def __str__(self): return "%s(%s)%s" % (self.content_object, self.get_valid_period_display(), self.price) # ######################## 深科技相关 ######################## class ArticleSource(models.Model): """文章来源""" name = models.CharField(max_length=64, unique=True) class Meta: verbose_name_plural = "16. 文章来源" def __str__(self): return self.name class Article(models.Model): """文章资讯""" title = models.CharField(max_length=255, unique=True, db_index=True, verbose_name="标题") source = models.ForeignKey("ArticleSource", verbose_name="来源") article_type_choices = ((0, '资讯'), (1, '视频')) article_type = models.SmallIntegerField(choices=article_type_choices, default=0) brief = models.TextField(max_length=512, verbose_name="摘要") head_img = models.CharField(max_length=255) content = models.TextField(verbose_name="文章正文") pub_date = models.DateTimeField(verbose_name="上架日期") offline_date = models.DateTimeField(verbose_name="下架日期") status_choices = ((0, '在线'), (1, '下线')) status = models.SmallIntegerField(choices=status_choices, default=0, verbose_name="状态") order = models.SmallIntegerField(default=0, verbose_name="权重", help_text="文章想置顶，可以把数字调大，不要超过1000") vid = models.CharField(max_length=128, verbose_name="视频VID", help_text="文章类型是视频, 则需要添加视频VID", blank=True, null=True) comment_num = models.SmallIntegerField(default=0, verbose_name="评论数") agree_num = models.SmallIntegerField(default=0, verbose_name="点赞数") view_num = models.SmallIntegerField(default=0, verbose_name="观看数") collect_num = models.SmallIntegerField(default=0, verbose_name="收藏数") # tags = models.ManyToManyField("Tags", blank=True, verbose_name="标签") date = models.DateTimeField(auto_now_add=True, verbose_name="创建日期") position_choices = ((0, '信息流'), (1, 'banner大图'), (2, 'banner小图')) position = models.SmallIntegerField(choices=position_choices, default=0, verbose_name="位置") # comment = GenericRelation("Comment") collect = GenericRelation("Collection") class Meta: verbose_name_plural = "17. 文章" def __str__(self): return "%s-%s" % (self.source, self.title) class Collection(models.Model): """收藏""" content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') account = models.ForeignKey("Account") date = models.DateTimeField(auto_now_add=True) class Meta: unique_together = ('content_type', 'object_id', 'account') verbose_name_plural = "18. 通用收藏表" class Comment(models.Model): """通用的评论表""" content_type = models.ForeignKey(ContentType, blank=True, null=True, verbose_name="类型") object_id = models.PositiveIntegerField(blank=True, null=True) content_object = GenericForeignKey('content_type', 'object_id') p_node = models.ForeignKey("self", blank=True, null=True, verbose_name="父级评论") content = models.TextField(max_length=1024) account = models.ForeignKey("Account", verbose_name="会员名") disagree_number = models.IntegerField(default=0, verbose_name="踩") agree_number = models.IntegerField(default=0, verbose_name="赞同数") date = models.DateTimeField(auto_now_add=True) def __str__(self): return self.content class Meta: verbose_name_plural = "19. 通用评论表" # ########################### 3. 用户相关 ################################ class Account(models.Model): """用户表""" username = models.CharField("用户名", max_length=64, unique=True) password = models.CharField("密码", max_length=64) uid = models.CharField(max_length=64, unique=True, help_text='微信用户绑定和CC视频统计') # 与第3方交互用户信息时，用这个uid,以避免泄露敏感用户信息 openid = models.CharField(max_length=128, blank=True, null=True) # 贝里余额 balance = models.PositiveIntegerField(default=0, verbose_name="可提现和使用余额") def __str__(self): return self.username class Meta: verbose_name_plural = "20. 用户表" class UserAuthToken(models.Model): """ 用户Token表 """ user = models.OneToOneField(to="Account") token = models.CharField(max_length=64, unique=True) def __str__(self): return '用户{}Token'.format(self.user) class Meta: verbose_name_plural = "21. 用户Token表" # ########################### 4. 奖惩相关 ################################ class ScoreRule(models.Model): """积分规则""" score_rule_choices = ( (0, '未按时交作业'), (1, '未及时批改作业'), (2, '作业成绩'), (3, '未在规定时间内对学员进行跟进'), (4, '未在规定时间内回复学员问题'), (5, '收到学员投诉'), (6, '导师相关'), (7, '学位奖学金'), ) rule = models.SmallIntegerField(choices=score_rule_choices, verbose_name="积分规则") score_type_choices = ((0, '奖励'), (1, '惩罚'), (2, '初始分配')) score_type = models.SmallIntegerField(choices=score_type_choices, verbose_name="奖惩", default=0) score = models.IntegerField(help_text="扣分数与贝里相等,若为0则代表规则的值可以从别处取得") # maturity_days = models.IntegerField("成熟周期", help_text="自纪录创建时开始计算") memo = models.TextField(blank=True, null=True) def __str__(self): return "%s-%s:%s" % (self.get_rule_display(), self.get_score_type_display(), self.score) class Meta: unique_together = ('rule', 'score_type') verbose_name_plural = "29. 奖惩规则" class ScoreRecord(models.Model): """积分奖惩记录""" content_type = models.ForeignKey(ContentType, blank=True, null=True) object_id = models.PositiveIntegerField(blank=True, null=True) content_object = GenericForeignKey('content_type', 'object_id') degree_course = models.ForeignKey("DegreeCourse", blank=True, null=True, verbose_name="关联学位课程") score_rule = models.ForeignKey("ScoreRule", verbose_name="关联规则") account = models.ForeignKey("Account", verbose_name="被执行人") score = models.IntegerField(verbose_name="金额(贝里)") # 这里单独有一个字段存积分而不是从score_rule里引用的原因是考虑到如果引用的话， # 一旦score_rule里的积分有变更，那么所有用户的历史积分也会被影响 received_score = models.IntegerField("实际到账金额贝里)", help_text="仅奖励用", default=0) balance = models.PositiveIntegerField(verbose_name="奖金余额(贝里)") maturity_date = models.DateField("成熟日期(可提现日期)") applied = models.BooleanField(default=False, help_text="奖赏纪录是否已被执行", verbose_name="是否已被执行") applied_date = models.DateTimeField(blank=True, null=True, verbose_name="事件生效日期") date = models.DateTimeField(auto_now_add=True, verbose_name="事件触发日期") memo = models.TextField(blank=True, null=True) def __str__(self): return "%s-%s - %s - %s 奖金余额:%s" % (self.id, self.score_rule, self.account, self.score, self.balance) class Meta: verbose_name_plural = "30. 奖惩记录" # ########################### 优惠券 ，支付相关 ################################ class Coupon(models.Model): """优惠券生成规则""" name = models.CharField(max_length=64, verbose_name="活动名称") brief = models.TextField(blank=True, null=True, verbose_name="优惠券介绍") coupon_type_choices = ((0, '通用券'), (1, '满减券'), (2, '折扣券')) coupon_type = models.SmallIntegerField(choices=coupon_type_choices, default=0, verbose_name="券类型") """ 通用： money_equivalent_value=100 off_percent=null minimum_consume=0 满减： money_equivalent_value=100 off_percent=null minimum_consume=1000 折扣： money_equivalent_value=0 off_percent=79 minimum_consume=0 """ money_equivalent_value = models.IntegerField(verbose_name="等值货币") off_percent = models.PositiveSmallIntegerField("折扣百分比", help_text="只针对折扣券，例7.9折，写79", blank=True, null=True) minimum_consume = models.PositiveIntegerField("最低消费", default=0, help_text="仅在满减券时填写此字段") content_type = models.ForeignKey(ContentType, blank=True, null=True) object_id = models.PositiveIntegerField("绑定课程", blank=True, null=True, help_text="可以把优惠券跟课程绑定") content_object = GenericForeignKey('content_type', 'object_id') quantity = models.PositiveIntegerField("数量(张)", default=1) open_date = models.DateField("优惠券领取开始时间") close_date = models.DateField("优惠券领取结束时间") valid_begin_date = models.DateField(verbose_name="有效期开始时间", blank=True, null=True) valid_end_date = models.DateField(verbose_name="有效结束时间", blank=True, null=True) coupon_valid_days = models.PositiveIntegerField(verbose_name="优惠券有效期（天）", blank=True, null=True, help_text="自券被领时开始算起") date = models.DateTimeField(auto_now_add=True) class Meta: verbose_name_plural = "31. 优惠券生成记录" def __str__(self): return "%s(%s)" % (self.get_coupon_type_display(), self.name) def save(self, *args, **kwargs): if not self.coupon_valid_days or (self.valid_begin_date and self.valid_end_date): if self.valid_begin_date and self.valid_end_date: if self.valid_end_date <= self.valid_begin_date: raise ValueError("valid_end_date 有效期结束日期必须晚于 valid_begin_date ") if self.coupon_valid_days == 0: raise ValueError("coupon_valid_days 有效期不能为0") if self.close_date < self.open_date: raise ValueError("close_date 优惠券领取结束时间必须晚于 open_date优惠券领取开始时间 ") super(Coupon, self).save(*args, **kwargs) class CouponRecord(models.Model): """优惠券发放、消费纪录""" coupon = models.ForeignKey("Coupon") number = models.CharField(max_length=64, unique=True) account = models.ForeignKey("Account", verbose_name="拥有者") status_choices = ((0, '未使用'), (1, '已使用'), (2, '已过期')) status = models.SmallIntegerField(choices=status_choices, default=0) get_time = models.DateTimeField(verbose_name="领取时间", help_text="用户领取时间") used_time = models.DateTimeField(blank=True, null=True, verbose_name="使用时间") # order = models.ForeignKey("Order", blank=True, null=True, verbose_name="关联订单") # 一个订单可以有多个优惠券 class Meta: verbose_name_plural = "32. 用户优惠券" def __str__(self): return '%s-%s-%s' % (self.account, self.number, self.status) class CourseSchedule(models.Model): """课程进度计划表,针对学位课程，每开通一个模块，就为这个学员生成这个模块的推荐学习计划表，后面的奖惩均按此表进行""" study_record = models.ForeignKey("StudyRecord") homework = models.ForeignKey("Homework") recommend_date = models.DateField("推荐交作业日期") def __str__(self): return "%s - %s - %s " % (self.study_record, self.homework, self.recommend_date) class Meta: unique_together = ('study_record', 'homework') verbose_name_plural = "33. 课程模块计划表（学位课）" class EnrolledCourse(models.Model): """已报名课程,不包括学位课程""" account = models.ForeignKey("Account") course = models.ForeignKey("Course", limit_choices_to=~Q(course_type=2)) enrolled_date = models.DateTimeField(auto_now_add=True) valid_begin_date = models.DateField(verbose_name="有效期开始自") valid_end_date = models.DateField(verbose_name="有效期结束至") status_choices = ((0, '已开通'), (1, '已过期')) status = models.SmallIntegerField(choices=status_choices, default=0) order_detail = models.OneToOneField("OrderDetail") # 使订单购买后支持 课程评价 # order = models.ForeignKey("Order",blank=True,null=True) def __str__(self): return "%s:%s" % (self.account, self.course) class Meta: verbose_name_plural = "34. 报名专题课" class DegreeRegistrationForm(models.Model): """学位课程报名表""" enrolled_degree = models.OneToOneField("EnrolledDegreeCourse") current_company = models.CharField(max_length=64, ) current_position = models.CharField(max_length=64, ) current_salary = models.IntegerField() work_experience_choices = ((0, "应届生"), (1, "1年"), (2, "2年"), (3, "3年"), (4, "4年"), (5, "5年"), (6, "6年"), (7, "7年"), (8, "8年"), (9, "9年"), (10, "10年"), (11, "超过10年"), ) work_experience = models.IntegerField() open_module = models.BooleanField("是否开通第1模块", default=True) stu_specified_mentor = models.CharField("学员自行指定的导师名", max_length=32, blank=True, null=True) study_plan_choices = ((0, "1-2小时/天"), (1, "2-3小时/天"), (2, "3-5小时/天"), (3, "5小时+/天"), ) study_plan = models.SmallIntegerField(choices=study_plan_choices, default=1) why_take_this_course = models.TextField("报此课程原因", max_length=1024) why_choose_us = models.TextField("为何选路飞", max_length=1024) your_expectation = models.TextField("你的期待", max_length=1024) memo = models.CharField(max_length=255, blank=True, null=True) class Meta: verbose_name_plural = "35. 报名表（学位课）" def __str__(self): return "%s" % self.enrolled_degree class EnrolledDegreeCourse(models.Model): """已报名的学位课程""" account = models.ForeignKey("Account") degree_course = models.ForeignKey("DegreeCourse") enrolled_date = models.DateTimeField(auto_now_add=True) valid_begin_date = models.DateField(verbose_name="有效期开始自", blank=True, null=True) # 开通第一个模块时，再添加课程有效期，2年 valid_end_date = models.DateField(verbose_name="有效期结束至", blank=True, null=True) status_choices = ( (0, '在学中'), (1, '休学中'), (2, '已毕业'), (3, '超时结业'), (4, '未开始'), # (3, '其它'), ) study_status = models.SmallIntegerField(choices=status_choices, default=0) mentor = models.ForeignKey("Account", verbose_name="导师", related_name='my_students', blank=True, null=True, limit_choices_to={'role': 1}) mentor_fee_balance = models.PositiveIntegerField("导师费用余额", help_text="这个学员的导师费用，每有惩罚，需在此字段同时扣除") order_detail = models.OneToOneField("OrderDetail") # 使订单购买后支持填写报名表 def __str__(self): return "%s:%s" % (self.account, self.degree_course) class Meta: unique_together = ('account', 'degree_course') verbose_name_plural = "36. 报名学位课" class Order(models.Model): """订单""" payment_type_choices = ((0, '微信'), (1, '支付宝'), (2, '优惠码'), (3, '贝里')) payment_type = models.SmallIntegerField(choices=payment_type_choices) payment_number = models.CharField(max_length=128, verbose_name="支付第3方订单号", null=True, blank=True) order_number = models.CharField(max_length=128, verbose_name="订单号", unique=True) # 考虑到订单合并支付的问题 account = models.ForeignKey("Account") actual_amount = models.FloatField(verbose_name="实付金额") status_choices = ((0, '交易成功'), (1, '待支付'), (2, '退费申请中'), (3, '已退费'), (4, '主动取消'), (5, '超时取消')) status = models.SmallIntegerField(choices=status_choices, verbose_name="状态") date = models.DateTimeField(auto_now_add=True, verbose_name="订单生成时间") pay_time = models.DateTimeField(blank=True, null=True, verbose_name="付款时间") cancel_time = models.DateTimeField(blank=True, null=True, verbose_name="订单取消时间") class Meta: verbose_name_plural = "37. 订单表" def __str__(self): return "%s" % self.order_number class OrderDetail(models.Model): """订单详情""" order = models.ForeignKey("Order") content_type = models.ForeignKey(ContentType) # 可关联普通课程或学位 object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') original_price = models.FloatField("课程原价") price = models.FloatField("折后价格") content = models.CharField(max_length=255, blank=True, null=True) # ？ valid_period_display = models.CharField("有效期显示", max_length=32) # 在订单页显示 valid_period = models.PositiveIntegerField("有效期(days)") # 课程有效期 memo = models.CharField(max_length=255, blank=True, null=True) def __str__(self): return "%s - %s - %s" % (self.order, self.content_type, self.price) class Meta: verbose_name_plural = "38. 订单详细" unique_together = ("order", 'content_type', 'object_id') class StudyRecord(models.Model): """学位课程的模块学习进度，报名学位课程后，每个模块会立刻生成一条学习纪录""" enrolled_degree_course = models.ForeignKey("EnrolledDegreeCourse") course_module = models.ForeignKey("Course", verbose_name="学位模块", limit_choices_to={'course_type': 2}) open_date = models.DateField(blank=True, null=True, verbose_name="开通日期") end_date = models.DateField(blank=True, null=True, verbose_name="完成日期") status_choices = ((2, '在学'), (1, '未开通'), (0, '已完成')) status = models.SmallIntegerField(choices=status_choices, default=1) class Meta: verbose_name_plural = "39. 学习记录表（报名学位课程后，每个模块会立刻生成一条学习纪录）" unique_together = ('enrolled_degree_course', 'course_module') def __str__(self): return '%s-%s' % (self.enrolled_degree_course, self.course_module) def save(self, *args, **kwargs): if self.course_module.degree_course_id != self.enrolled_degree_course.degree_course_id: raise ValueError("学员要开通的模块必须与其报名的学位课程一致！") super(StudyRecord, self).save(*args, **kwargs) class TransactionRecord(models.Model): """贝里交易纪录""" account = models.ForeignKey("Account") amount = models.IntegerField("金额") # balance = models.IntegerField("账户余额") transaction_type_choices = ((0, '收入'), (1, '支出'), (2, '退款'), (3, "提现")) # 2 为了处理 订单过期未支付时，锁定期贝里的回退 transaction_type = models.SmallIntegerField(choices=transaction_type_choices) content_type = models.ForeignKey(ContentType, blank=True, null=True) object_id = models.PositiveIntegerField(blank=True, null=True, verbose_name="关联对象") content_object = GenericForeignKey('content_type', 'object_id') transaction_number = models.CharField(unique=True, verbose_name="流水号", max_length=128) date = models.DateTimeField(auto_now_add=True) memo = models.CharField(max_length=128, blank=True, null=True) class Meta: verbose_name_plural = "40. 贝里交易记录" def __str__(self): return "%s" % self.transaction_number class HomeworkRecord(models.Model): """学员作业记录及成绩""" homework = models.ForeignKey("Homework") student = models.ForeignKey("EnrolledDegreeCourse", verbose_name="学生") score_choices = ((100, 'A+'), (90, 'A'), (85, 'B+'), (80, 'B'), (70, 'B-'), (60, 'C+'), (50, 'C'), (40, 'C-'), (-1, 'D'), (0, 'N/A'), (-100, 'COPY'), ) score = models.SmallIntegerField(verbose_name="分数", choices=score_choices, null=True, blank=True) mentor = models.ForeignKey("Account", related_name="my_stu_homework_record", limit_choices_to={'role': 1}, verbose_name="导师") mentor_comment = models.TextField(verbose_name="导师批注", blank=True, null=True) # 导师 status_choice = ( (0, '待批改'), (1, '已通过'), (2, '不合格'), ) status = models.SmallIntegerField(verbose_name='作业状态', choices=status_choice, default=0) submit_num = models.SmallIntegerField(verbose_name='提交次数', default=0) correct_date = models.DateTimeField('备注日期', blank=True, null=True) note = models.TextField(blank=True, null=True) date = models.DateTimeField("作业提交日期", auto_now_add=True) check_date = models.DateTimeField("批改日期", null=True, blank=True) update_time = models.DateTimeField(auto_now=True, verbose_name="提交日期") # homework_path = models.CharField(verbose_name='作业路径', max_length=256,blank=True,null=True) 作业路径可以动态拿到，没必要存 reward_choice = ((0, '新提交'), (1, '按时提交'), (2, '未按时提交'), (3, '成绩已奖励'), (4, '成绩已处罚'), (5, '未作按时检测'), ) reward_status = models.SmallIntegerField(verbose_name='作业记录奖惩状态', default=0) def __str__(self): return "%s %s" % (self.homework, self.student) class Meta: verbose_name_plural = "41. 作业" unique_together = ("homework", "student") class StuFollowUpRecord(models.Model): """学员跟进记录""" enrolled_degree_course = models.ForeignKey("EnrolledDegreeCourse", verbose_name="学生") mentor = models.ForeignKey("Account", related_name='mentor', limit_choices_to={'role': 1}, verbose_name="导师") followup_tool_choices = ((0, 'QQ'), (1, '微信'), (2, '电话'), (3, '系统通知')) followup_tool = models.SmallIntegerField(choices=followup_tool_choices, default=1) record = models.TextField(verbose_name="跟进记录") attachment_path = models.CharField(max_length=128, blank=True, null=True, verbose_name="附件路径", help_text="跟进记录的截图等") date = models.DateTimeField(auto_now_add=True) class Meta: verbose_name_plural = "42. 学员跟进记录" def __str__(self): return "%s --%s --%s" % (self.enrolled_degree_course, self.record, self.date)
三、why? 流程
1. 为什么要开发“学城”？ - 提高在线 完课率（学成率）。 - 具体： - 购买时间周期 - 闯关式学习 - 考核 - 导师筛选 - 导师监督（跟进记录） - 答疑时间（12小时） - 奖惩措施 - 时间 - 作业 2. 开发周期和团队？ 团队： - 开发 - 导师后台，stark组件+rbac ： 1人 - 管理后台，stark组件+rbac ： 1人 - 主站 - vue.js 1人 - api 村长+1/2文州+1/2Alex+其他 + 村长 - 运维(1人) - 测试(1人) - 产品经理(1人) - UI设计(1人) - 运营(1人) - 销售(4人) - 全职导师(2人) - 签约讲师（...） 周期： - 7月份 - 11月份上线 - 11月份~次年5月份： 修Bug，活动支持，广告。。。 - 6月份：开发题库系统 3. 购买流程 - 加入购物车 - 去结算 - 去支付
四、知识点
详细见：https://www.cnblogs.com/alice-bj/articles/9363920.html
1. 登录、课程、文章相关得接口：
版本、分页、路由、视图 (ViewSetMinin ModelViewSet APIView)、
中间件、跨域、序列化（o2o fk m2m）、认证 (authentication_classes = [LuffyAuth, ])、
事务(with transaction.atomic(): ... ... )、异常处理 ( try ... except 异常捕获)
2. 与购物车相关得接口
用户挑选课程，添加到购物车，数据存到redis中：
使用redis原因：中间状态，可能会频繁得修改数据，
POST请求：购物车中添加一条数据
GET请求：查看自己购物车中的所有数据
DELETE请求：删除购物车中的数据
PUT/PATCH请求：更新价格策略
增删改查：
合法性，一定要判断，用户传过来数据，合法性。
3. 与支付中心相关得接口
用户选中购物车得课程，点击结算，跳到支付中心
涉及到 数据存在redis、认证、事务（redis）
post请求： 用户选中购物车得课程，去支付，只要是用户传得数据，都要判断合法性，在加入之前先清空，删除。
patch请求：修改课程或全局得优惠劵。
get请求：查看支付中心得数据
4. 与生成订单相关得接口
用户将redis中得支付中心得课程数据，点击立即支付，发post请求，生成订单，订单详情，存数据库中。
1. 获取用户提交得数据（贝里数和实付金额），验证数据得合法性。查看个人得账户余额（贝里）是否足够；
2. 去结算中心获取课程信息，优惠劵，全站优惠劵，判断优惠劵得类型：立减、满减、折扣
算出实际应该支付得钱数与前端传来得实付金额是否相等。
3. 生成订单，多条sql，使用事务：
订单表创建一条数据，订单详细根据课程创建多条记录，
使用贝里，贝里金额扣除，交易记录，更新优惠劵得状态。