http://www.django-rest-framework.org/api-guide/validators/#currentuserdefault
I wants to read default value from userprofile automatically. Right now the offical method support User and DateTime. But I want my customized value. How can I do that?
owner = serializers.HiddenField(
default=serializers.CurrentUserDefault()
)
This is my workaround. Copy the example from source code and place it here. Hope near future it has friendly solution.
class CurrentBranchDefault:
def set_context(self, serializer_field):
self.user = serializer_field.context['request'].user
self.branch = self.user.userprofile.selected_branch
def __call__(self):
return self.branch
def __repr__(self):
return unicode_to_repr('%s()' % self.__class__.__name__)
class StaffOrderSerializer(serializers.ModelSerializer):
branch = serializers.HiddenField(default=CurrentBranchDefault())
If you want to calculate one hidden field, using other incoming fields in serializer, than you need to use serializer_field.context['request'].data
This "data" will be validated before "set_context()", so you can use it in safe.
I hope it will help someone else.
class DefineNoteType:
def set_context(self, serializer_field):
# setting field "type", calculated by other serializer fields
data = serializer_field.context['request'].data
subscriber = data.get('subscriber', None)
connection = data.get('connection', None)
if subscriber:
self.type = 'subscriber_type'
elif connection:
self.type = 'connection_type'
else:
raise serializers.ValidationError('Custom error.')
def __call__(self):
return self.type
class NoteSerializer(serializers.ModelSerializer):
type = serializers.HiddenField(default=DefineNoteType())
