How To Include In Queryset Details Fields Of A Foreign Key (django And Rest_api)

I use rest_api in django in order to display a queryset of 'chats'. I tried to get it done for a while, without success... in angularjs controller I call a function which do the fo

Solution 1:

You can make a property on your model:

classMessage(models.Model):# some code...@propertydefsender_name(self):
        returnself.sender.name # username or whatever

Then is you serializer you create a custom field:

classChatsSerializer(serializers.ModelSerializer):
    # some code...

    sender_name = serializers.Field(source = 'sender_name') # source = 'name of property or method' you dont have to pass it inthis example becouse model property has the same name asthis serializer attribute

    classMeta:
         fields = ('sender_name', 'id', 'sender', 'recipient','thread','subject','moderation_reason','body')

Now you have an 'sender_name' object in your JSON response.

That's just one method I hope it helps :)

The second one is to add an UserModelSerializer:

classUserModelSerializer(serializers.ModelSerializer):

    classMeta:
         model = get_user_model()

classChatsSerializer(serializers.ModelSerializer):
    # some code...

    sender = UserModelSerializer()
    recipient = UserModelSerializer()

    classMeta:
         fields = ('sender_name', 'id', 'sender', 'recipient','thread','subject','moderation_reason','body')

Retriving is ok. But creating and updating with it is a hard piece of coding.

You can always create an Angular service for your 'sender' object and after reciving your chat messages with only foreign keys, request data from a 'UserModelView' with those 'FK' and bind them together. That's a third method.