Clash Royale CLAN TAG#URR8PPP

Django - Creating an instance via the serializer with a foreign key reference

I have a agencies and users. I want to create User instances via the UserSerializer which have an agency_id. However the serializer's validated_data does not have the agency_id after calling is_valid().

User

UserSerializer

agency_id

validated_data

agency_id

is_valid()

class Agency(models.Model):
name = models.CharField(max_length=60)

class User(modes.Model):
username = models.CharField(max_length=60)
agency = models.ForeignKey(Agency, blank=True, null=True)

class UserSerializer(serializers.ModelSerializer):

class Meta:
User = get_user_model()
model = User

fields = ( 'id', 'username', 'agency_id' )

read_only_fields = ['id']


Try to create a user via the serializer which belongs to the Acme Agency:

agency = Agency.objects.create(name="Acme Agency")
serializer = UserSerializer(data= 'username':'wiley', 'agency_id': agency.id )

serializer.is_valid() # True
serializer.validated_data.get('agency_id') # None


Creating a user via the UserManager using the agency id works just fine:

user = User.objects.create(username='wiley', agency_id=1)
user.agency.id # 1


1 Answer
1

use agency instead of agency_id in UserSerializer as

agency

agency_id

class UserSerializer(serializers.ModelSerializer):
class Meta:
User = get_user_model()
model = User
fields = ('id', 'username', 'agency')
read_only_fields = ['id']

and use the serailizer as,

serializer = UserSerializer(data= 'username':'wiley', 'agency': agency.id )

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