序
最近对产品api进行rest改造完毕，就记录下Django中rest-framework的一些基本用法
外键
- 外键使用
class Suser(models.Model):
name=models.CharField(max_length=100)
ok=models.CharField(max_length=100)
class Snippet(models.Model):
created = models.DateTimeField(auto_now_add=True)
title = models.CharField(max_length=100, blank=True, default='')
code = models.TextField()
suser=models.ForeignKey('Suser',related_name='snippet') #注意related_name要和序列化中的一样
class Meta:
ordering = ('created',)
class SuserSerializer(serializers.ModelSerializer):
snippet = serializers.PrimaryKeyRelatedField(many=True, queryset=Snippet.objects.all()) #在querset中找存在外键是该user的，相当于user.snipprt_set
class Meta:
model=Suser
fields=('name','ok','snippet')
class UserList(generics.ListAPIView):
queryset = Suser.objects.all()
serializer_class = SuserSerializer
- 显示外键信息
class SnippetSerializer(serializers.ModelSerializer):
suser=serializers.ReadOnlyField(source='suser.ok') #注意有source
class Meta:
model = Snippet
fields = ('id', 'title', 'code','suser')
- 格外存储
class hellolist(generics.ListCreateAPIView):
queryset = Snippet.objects.all()
serializer_class = SnippetSerializer
def perform_create(self, serializer):
serializer.save(suser=Suser.objects.get(ok='10'))
permission
-
添加permission：
permission_classes = (permissions.IsAuthenticated,)
-
自定义permission
class BasePermission(object):
def has_permission(self, request, view): #注意有三个参数，是访问所有数据的前提
return True
def has_object_permission(self, request, view, obj): #注意有四个参数，限制单个实例的访问即retrie update delete
return True
- 在rest页面增加logonin：
url(r'^api-auth/', include('rest_framework.urls',
namespace='rest_framework'))
改变存取数据的形式
- 改变存取数据的形式
class SnippetSerializer(serializers.ModelSerializer):
suser=serializers.ReadOnlyField(source='suser.ok')
title=serializers.SerializerMethodField('hello',read_only=True)
def hello(self,instance):
return 'huohuohuo'
class Meta:
model = Snippet
fields = ('id', 'title', 'code','suser')