from rest_framework.viewsets import ViewSetMixin #继承这个类后可以使用带参数的as_view()方法
from rest_framework.views import APIView #构建新的request和dispatch方法可以使用.data方法
from rest_framework import serializers
from luffyrestful import models
from rest_framework.response import Response
class CourseSerialize(serializers.ModelSerializer):
level = serializers.CharField(source='get_level_display') #自定义序列化字段显示level字段choices的值
class Meta:
model = models.Course
fields = ['id', 'title', 'course_img', 'level']
class CourseDetailSerialize(serializers.ModelSerializer):
level = serializers.CharField(source='course.get_level_display')
course_img = serializers.CharField(source='course.course_img')
title = serializers.CharField(source='course.title')
course_section = serializers.SerializerMethodField()
recommend = serializers.SerializerMethodField()
class Meta:
model = models.CourseDetail
fields = ['title','slogan', 'why','level','course_img', 'course_section', 'recommend']
def get_course_section(self,obj):
queryset = obj.course.chapter_set.all()
return [{'name': chapter_obj.name, 'num': chapter_obj.num} for chapter_obj in queryset]
def get_recommend(self, obj):
queryset = obj.recommend.all()
return [{'title': course_obj.title, 'level': course_obj.get_level_display()} for course_obj in queryset]
class CourseView(ViewSetMixin, APIView):
def list(self, request, *args, **kwargs):
ret = {'code': 1000, 'data': None}
try:
course_list = models.Course.objects.all()
src = CourseSerialize(course_list, many=True)
ret['data'] = src.data
return Response(ret)
except Exception as e:
ret['code'] = 1001
ret['error'] = e
return Response(ret)
def retrieve(self,request, *args, **kwargs):
ret = {'code': 1000, 'data': None}
try:
pk = kwargs.get('pk')
query_obj = models.CourseDetail.objects.filter(course_id=pk).first()
src = CourseDetailSerialize(query_obj, many=False)
ret['data'] = src.data
return Response(ret)
except Exception as e:
ret['code'] = 1001
ret['error'] = e
return Response(ret)
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