django - 带有 Django 休息框架的 manyToMany

Question

我目前正在使用 django-rest-framework 提供的默认 CRUD 操作。它适用于普通模型，但我的一个模型与另一个标签模型具有多对多关系。这是模型的代码

class ActivityType(models.Model):
    title = models.CharField(max_length=200)
    slug = models.CharField(max_length=250,unique=True)

    def __unicode__(self):
        return self.slug        

class Activity(models.Model):
    owner = models.ForeignKey('auth.user')
    title = models.CharField(max_length=200)
    slug = models.CharField(max_length=250,unique=True)
    description = models.TextField()
    tags = models.ManyToManyField(ActivityType)
    created = models.DateTimeField(auto_now_add=True, blank=True)

    def __unicode__(self):
        return self.slug

我想知道的是，如果可能的话，无需从头开始编写所有 CRUD 操作，将 DRF 与其集成的最佳方法是什么。

Answer 1

在你的 serializers.py

from rest_framework import serializers
from rest_framework import generics

from models import Activity
from models import ActivityType

class ActivityTypeSerializer(serializers.ModelSerializer):

    class Meta:
        model = ActivityType
        fields = ('id', 'title', 'slug')

class ActivitySerializer(serializers.ModelSerializer):

    tags = ActivityTypeSerializer(many=True, read_only=True)

    class Meta:
        model = Activity
        fields = ('id', 'owner', 'title', 'slug', 'description', 'tags', 'created')

在你的 views.py 中

from rest_framework import viewsets

from serializers import ActivitySerializer
from serializers import ActivityTypeSerializer

from models import Activity
from models import ActivityType

class ActivityViewSet(viewsets.ModelViewSet):
    queryset = Activity.objects.all()
    serializer_class = ActivitySerializer

class ActivityTypeViewSet(viewsets.ModelViewSet):
    queryset = ActivityType.objects.all()
    serializer_class = ActivityTypeSerializer

并在你的 urls.py

from rest_framework.urlpatterns import format_suffix_patterns
from rest_framework import routers, serializers, viewsets
from rest_framework import generics
from rest_framework import viewsets, routers  

from your_app.views import ActivityTypeViewSet
from your_app.views import ActivityViewSet

router = routers.DefaultRouter()

router.register(r'activitytypes', ActivityTypeViewSet)  
router.register(r'activities', ActivityViewSet)

还要确保按照文档中的描述包含了 restframework url

 urlpatterns = patterns('',

 # your other urls 

     url(r'^api/$', include('rest_framework.urls', namespace='rest_framework')),
     url(r'api/accounts/', include('rest_framework.urls', namespace='rest_framework')),

 )