符合RESTful规范的API

统一使用的utils,serializers:

class BaseResponse:

    def __init__(self):
        self.code = 1000
        self.data = None
        self.error = None

    @property
    def dict(self):
        return self.__dict__

版本1：

from django.conf.urls import url
from api.views import course
from api import views



urlpatterns = [
    url(r"courses/$",course.CoursesView.as_view()),
    url(r"courses/(?P<pk>d+)/$",course.CourseDetailView.as_view()),

]

from django.shortcuts import HttpResponse
from rest_framework.views import APIView
from rest_framework.versioning import URLPathVersioning
from rest_framework.response import Response
from api.serializers import course
from api import models
from api.utils.response import BaseResponse
from rest_framework.pagination import PageNumberPagination


class CoursesView(APIView):

    def get(self,request,*args,**kwargs):
        result = BaseResponse()
        try:
            queryset = models.Course.objects.all()
            # 分页
            page = PageNumberPagination()
            course_list = page.paginate_queryset(queryset,request,self)

            # 分页之后的结果执行序列化
            # 分页之后必须在序列化类中加上:instance=course_list
            ser = course.CourseSerializers(instance=course_list,many=True)
            # ser_obj = course.CourseSerializers(queryset,many=True)

            result.data = ser.data
            # result.data = ser_obj.data
        except Exception as e:
            result.code = 500
            result.error = "无法获取数据"
        return Response(result.dict)


class CourseDetailView(APIView):
    def get(self,request,pk,*args,**kwargs):
        result = BaseResponse()
        try:
            course_obj = models.Course.objects.get(id=pk)
            ser_obj = course.CourseSerializers(instance=course_obj)
            result.data = ser_obj.data
        except Exception as e:
            result.code = 500
            result.error = "无法获取数据"

        return Response(result.dict)

# from rest_framework.viewsets import ModelViewSet
from rest_framework import serializers
from api import models

class CourseSerializers(serializers.ModelSerializer):
    level = serializers.CharField(source="get_level_display")
    class Meta:
        model = models.Course
        fields = "__all__"
        depth = 5


class DegreeSerializers(serializers.ModelSerializer):
    teacher_name = serializers.SerializerMethodField()
    # teacher_name = serializers.CharField(source="teachers.")
    class Meta:
        model = models.DegreeCourse
        fields = ["name","teacher_name"]

    def get_teacher_name(self,row):
        teacher_list = row.teachers.all()
        return [{"name": i.name } for i in teacher_list]


class DegreeScholarSerializers(serializers.ModelSerializer):
    # scholar = serializers.CharField(source="scholarship_set.all")
    scholar = serializers.SerializerMethodField()
    class Meta:
        model = models.DegreeCourse
        fields = ["name","scholar"]

    def get_scholar(self,row):
        scholar_list = row.scholarship_set.all()
        return [{"scholar": i.value} for i in scholar_list]

class DegreeMokuaiSerializers(serializers.ModelSerializer):
    # degree_mokuai = serializers.CharField(source="")
    # print(111)
    class Meta:
        model = models.DegreeCourse
        fields = ["name"]
        # fields = "__all__"


class Course_Serializers(serializers.ModelSerializer):
    level = serializers.CharField(source="get_level_display")
    why_study = serializers.CharField(source="coursedetail.why_study")
    what_to_study_brief = serializers.CharField(source="coursedetail.what_to_study_brief")
    recommend_courses = serializers.SerializerMethodField()
    class Meta:
        model = models.Course
        fields = ["name","level","why_study","what_to_study_brief","recommend_courses"]

    def get_recommend_courses(self,row):
        recomment_list = row.coursedetail.recommend_courses.all()
        return [{"id":item.id,"name":item.name} for item in recomment_list]


class CourseQuestionSerializer(serializers.ModelSerializer):
    # question = serializers.CharField(source="asked_question.all")
    question = serializers.SerializerMethodField()
    class Meta:
        model = models.Course

        fields = ["name","question"]

    def get_question(self,row):
        question_list = row.asked_question.all()
        return [{"question":i.question,"answer":i.answer} for i in question_list]


class CourseOutlineSerializers(serializers.ModelSerializer):
    courseoutline = serializers.SerializerMethodField()
    class Meta:
        model = models.Course
        fields = ["name","courseoutline"]
        # fields = "__all__"

    def get_courseoutline(self,row):
        outline_list = row.coursedetail.courseoutline_set.all()
        return [{"courseoutline":i.title,"content":i.content} for i in outline_list]


class CourseChapterSerializers(serializers.ModelSerializer):
    course_chapter = serializers.SerializerMethodField()

    class Meta:
        model = models.Course
        fields = ["name","course_chapter"]

    def get_course_chapter(self,row):
        course_chapter_list = row.coursechapters.all()
        return [{"chapter": i.name} for i in course_chapter_list]

版本2：

　　urls:

from django.conf.urls import url
from api.views import course
from api import views



urlpatterns = [
    # 如果as_view()里面要传参数的话，前提视图CBV必须继承 ViewSetMixin ,这样才能往as_view()中传入参数。
    # 键值对的形式，表明了各请求方式对应的方法，所以特定的请求方式，便可执行相应的方法。
    # 如果as_view()里写了相应的键值对，在视图CBV中必须写出相应的方法。

    url(r'courses/$',course.CoursesView.as_view({'get':'list','post':'create'})),

    url(r'courses/(?P<pk>d+)/$',course.CoursesView.as_view({'get':'retrieve','put':'update','delete':'destroy'}))
]

　　views:

from django.shortcuts import HttpResponse
from rest_framework.views import APIView
from rest_framework.versioning import URLPathVersioning
from rest_framework.response import Response
from api.serializers import course
from api import models
from api.utils.response import BaseResponse
from rest_framework.pagination import PageNumberPagination
from rest_framework.viewsets import ViewSetMixin

# 继承ViewSetMixin
class CoursesView(ViewSetMixin,APIView):
    def list(self,request,*args,**kwargs):
        result = BaseResponse()
        try:
            # 从数据库中获取数据
            queryset = models.Course.objects.all()
            ser_obj = course.CourseSerializers(queryset,many=True)

            result.data = ser_obj.data
        except Exception as e:
            result.code = 500
            result.error = "无法获取数据"
        return Response(result.dict)

    def create(self,request,*args,**kwargs):
        '''
        post方式，增加
        :param request:
        :param args:
        :param kwargs:
        :return:
        '''
    def retrieve(self,request,pk,*args,**kwargs):
        '''
        详细显示
        :param request:
        :param pk:
        :param args:
        :param kwargs:
        :return:
        '''
        result = BaseResponse()
        try:
            course_obj = models.Course.objects.get(id=pk)
            ser_obj = course.CourseSerializers(instance=course_obj)
            # print(ser_obj)
            result.data = ser_obj.data
            # print(result.data)
        except Exception as e:
            result.code = 500
            result.error = "无法获取数据"
        return Response(result.dict)

    def update(self,pk,*args,**kwargs):
        '''
        put,更改
        :param pk:
        :param args:
        :param kwargs:
        :return:
        '''

    def destroy(self,pk,*args,**kwargs):
        '''
        delete ,删除
        :param pk:
        :param args:
        :param kwargs:
        :return:
        '''

版本3：

　　urls:

from django.conf.urls import url
from api.views import course
from api import views



urlpatterns = [
    # 如果as_view()里面要传参数的话，前提视图CBV必须继承 ViewSetMixin ,这样才能往as_view()中传入参数。
    # 键值对的形式，表明了各请求方式对应的方法，所以特定的请求方式，便可执行相应的方法。
    # 如果as_view()里写了相应的键值对，在视图CBV中必须写出相应的方法。

    url(r'courses/$',course.CoursesView.as_view({'get':'list'})),

    url(r'courses/(?P<pk>d+)/$',course.CoursesView.as_view({'get':'retrieve'}))
]

　　views:

from django.shortcuts import HttpResponse
from rest_framework.views import APIView
from rest_framework.versioning import URLPathVersioning
from rest_framework.response import Response
from api.serializers import course
from api import models
from api.utils.response import BaseResponse
from rest_framework.pagination import PageNumberPagination
from rest_framework.viewsets import ViewSetMixin
from rest_framework.mixins import ListModelMixin,CreateModelMixin,RetrieveModelMixin,UpdateModelMixin,DestroyModelMixin,ListModelMixin
from rest_framework.viewsets import GenericViewSet

class CoursesView(ListModelMixin,GenericViewSet):
    queryset = models.Course.objects.all()
    def list(self,request,*args,**kwargs):
        result = BaseResponse()
        try:
            course_list = models.Course.objects.all()
            ser_obj = course.CourseSerializers(course_list,many=True)
            result.data = ser_obj.data
        except Exception as e:
            result.code = 500
            result.error = "无法获取数据"
        return Response(result.dict)


    def retrieve(self,request,pk,*args,**kwargs):
        result = BaseResponse()
        try:
            course_obj = models.Course.objects.get(id=pk)
            ser_obj = course.CourseSerializers(course_obj)
            result.data = ser_obj.data
        except Exception as e:
            result.code = 500
            result.error = "无法获取数据"
        return Response(result.dict)