控制Django Rest框架的输出 [英] Control output of Django Rest Framework
问题描述
输出:
{count:2,next :null,previous:null,results:[{user:{username:smithb,first_name:Bob,last_name:Smith},role_type 2,item:1},{user:{username:jjones,first_name:Jane,last_name:Jones},role_type:2,item 1}]}
serializers.py
class RoleSerializer(serializers.ModelSerializer):
user = PersonShortSerializer(many = False,read_only = True)
class Meta:
model = Role
fields ='user','role_type','item'
def get_role_type(self,obj):
return obj.name
models.py
class Role(models.Model):
role_type = models.ForeignKey('RoleType')
user = models.ForeignKey(Person)
item = models.ForeignKey('Assets。 Item')
class RoleType(models.Mod el):
name = models.CharField(max_length = 255)
permissions = models.ManyToManyField(RolePermission,
blank = True,null = True)
def __unicode __(self):
return self.name
p>查看不同类型的序列化器关系字段。
特别是 RelatedField 应该做你所需要的,因为它将使用其unicode值代表关系的目标。
$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b
$ b class Meta:
model = Role
fields =('user','role_type','item')
另请注意 RelatedField
是一个只读字段,因为没有办法确定给定unicode表示的适当的模型实例。如果你确实需要它可写,你可能需要看一下实现一个自定义关系字段。
My REST API is functioning correctly, but the output is all id numbers. How can I get 'role_type' to display the name instead of the ID number?
Output:
{"count": 2, "next": null, "previous": null, "results": [{"user": {"username": "smithb", "first_name": "Bob", "last_name": "Smith"}, "role_type": 2, "item": 1}, {"user": {"username": "jjones", "first_name": "Jane", "last_name": "Jones"}, "role_type": 2, "item": 1}]}
serializers.py
class RoleSerializer(serializers.ModelSerializer):
user = PersonShortSerializer(many=False, read_only=True)
class Meta:
model = Role
fields = 'user', 'role_type', 'item'
def get_role_type(self, obj):
return obj.name
models.py
class Role(models.Model):
role_type = models.ForeignKey('RoleType')
user = models.ForeignKey(Person)
item = models.ForeignKey('Assets.Item')
class RoleType(models.Model):
name = models.CharField(max_length=255)
permissions = models.ManyToManyField(RolePermission,
blank=True, null=True)
def __unicode__(self):
return self.name
Take a look at the different types of serializer relationship fields.
In particular RelatedField should do what you need as it'll represent the target of the relationship using its unicode value.
class RoleSerializer(serializers.ModelSerializer):
user = PersonShortSerializer(many=False, read_only=True)
role_type = serializers.RelatedField()
class Meta:
model = Role
fields = ('user', 'role_type', 'item')
Also note that RelatedField
is a read only field, as there's no way to determine the appropriate model instance given the unicode representation. If you did need it to be writable you might want to look at implementing a custom relational field.
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