实验楼 实现课程模块

首先开始配置settings

MEDIA_URL='/media/'   #媒体文件的地址
MEDIA_ROOT=os.path.join(BASE_DIR,'media')

1.model 模块

from django.db import models
from utils.MyBaseModel import Base

# Create your models here.
class CourseType(Base):
    title=models.CharField('课程类别',max_length=16)
    sequence=models.IntegerField('展示顺序',default=10)

    class Meta:
        db_table='tb_coursetype'

    def  __str__(self):
        return self.title



class CourseTag(Base):
    title=models.CharField('展示标签',max_length=16)
    sequence=models.IntegerField('展示顺序',default=10)


    class Meta:
        db_table='tb_coursetag'

    def __str__(self):
        return self.title



class Course(Base):
    STATUS=(
        ('0',"即将上线"),
        ('1', "已上线"),
        ('2', "已下线"),

    )
    title=models.CharField('课程名',max_length=24)
    desc=models.CharField('课程描述',max_length=256)
    img=models.ImageField('课程logo',upload_to='course',null=True)
    course_type=models.ForeignKey(CourseType,verbose_name="课程类别",on_delete=models.SET_NULL,default=None,null=True)
    course_tag=models.ManyToManyField(CourseTag,verbose_name='课程标签',)
    status=models.CharField('课程状态',choices=STATUS,default='1',max_length=20)
    attention=models.IntegerField('关注人数',default=0)
    learner=models.IntegerField('学习人数',default=0)

    class Meta:
        db_table='tb_course'

    def __str__(self):
        return self.title


class Chapters(Base):
    title=models.CharField('章标题',max_length=24)
    serual_num=models.IntegerField('章序号')
    course=models.ForeignKey(Course,related_name='chapters',on_delete=models.SET_NULL,null=True)


    class Meta:
        db_table='tb_chapters'


    def  __str__(self):
        return self.title


class Sections(Base):
    title = models.CharField('节标题', max_length=24)
    serual_num = models.IntegerField('节序号')
    course = models.ForeignKey(Chapters, related_name='chapters', on_delete=models.SET_NULL, null=True)
    learn_time=models.IntegerField('学习小时',default=1)
    video=models.FileField('上传视屏',upload_to="videos/%Y%m%d/",blank=True,max_length=1024)
    seq_num=models.IntegerField('序号',default=1)


    class Meta:
        db_table='tb_sections'

    def __str__(self):
        return self.title
#迁移数据库  python  manage.py makemigrations      python  manage.py  migrate

2.admin 文件中注册

from django.contrib import admin
from . import models
# Register your models here.
admin.site.register(models.CourseType)
admin.site.register(models.CourseTag)
admin.site.register(models.Course)
admin.site.register(models.Sections)
admin.site.register(models.Chapters)

3.添加序列化

# -*- coding: utf-8 -*-
from   rest_framework import serializers
from course.models import *

class  CourseTypeSerializer(serializers.ModelSerializer):
    class Meta:
        model=CourseType
        fields="__all__"



class CourseTagSerializer(serializers.ModelSerializer):
    class Meta:
        model=CourseTag
        fields="__all__"

class CourseSerializer(serializers.ModelSerializer):
    # course_type=serializers.CharField(source='course_type.title')
    class Meta:
        model=Course
        fields="__all__"
        deep= 1


class SectionsSerializer(serializers.ModelSerializer):
    class Meta:
        model=Sections
        fields="__all__"

class ChaptersSerializer(serializers.ModelSerializer):
    sections=SectionsSerializer(many=True)
    class Meta:
        model=Chapters
        fields="__all__"

4.添加视图类

# -*- coding: utf-8 -*-
from   rest_framework import serializers
from course.models import *

class  CourseTypeSerializer(serializers.ModelSerializer):
    class Meta:
        model=CourseType
        fields="__all__"



class CourseTagSerializer(serializers.ModelSerializer):
    class Meta:
        model=CourseTag
        fields="__all__"

class CourseSerializer(serializers.ModelSerializer):
    # course_type=serializers.CharField(source='course_type.title')
    class Meta:
        model=Course
        fields="__all__"
        deep= 1


class SectionsSerializer(serializers.ModelSerializer):
    class Meta:
        model=Sections
        fields="__all__"

class ChaptersSerializer(serializers.ModelSerializer):
    sections=SectionsSerializer(many=True)
    class Meta:
        model=Chapters
        fields="__all__"

5.添加主路由，再子路由

"""syl URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/2.2/topics/http/urls/
Examples:
Function views
    1. Add an import:  from my_app import views
    2. Add a URL to urlpatterns:  path('', views.home, name='home')
Class-based views
    1. Add an import:  from other_app.views import Home
    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
Including another URLconf
    1. Import the include() function: from django.urls import include, path
    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
"""
from django.contrib import admin
from django.urls import path,include
from django.conf.urls.static import static
from  syl import settings
urlpatterns = [
    path('admin/', admin.site.urls),
    # path('user/', include('user.urls')),
    # path('verify/', include('verifications.urls')),
    # path('oauth/', include('oauth.urls')),
    path('course/',include('course.urls'))
]

urlpatterns +=static(settings.MEDIA_URL,document_root=settings.MEDIA_ROOT)



#子路由
from django.urls import path,re_path
from rest_framework.routers import DefaultRouter

from . import views


router=DefaultRouter()
router.register(r'type',views.CourseTypeVIewSet)
router.register(r'tag',views.CourseTagVIewSet)
router.register(r'course',views.CourseVIewSet)
router.register(r'sections',views.SectionsVIewSet)
router.register(r'chapters',views.ChaptersVIewSet)

urlpatterns=[


]
urlpatterns +=router.urls