Django serializer field not working - django

Question

I did not find a solution although I looked at the questions asked...
When I use this serializer:
class MessageSerializer(ModelSerializer):
sender = UserMobileSerializer(read_only=True)
class Meta:
model = Messages
fields = '__all__'
I get something like this:
{
"id": 62,
"sender": {
"pk": 12,
"email": "john#gmail.com",
"full_name": "John",
"profile_photo": null
},
"created_at": "2018-04-29T00:54:50.437662",
"message": "sdkjnasljdhkajsjdlasdasda",
"read_at": false,
"target": 18
}
I would like the target field to be like sender, that is: display the full user information instead of just the ID.
I tried to add this line: target = UserMobileSerializer(), but I still get only the ID in the output. I also tried target = UserMobileSerializer(read_only=True) but nothing changed.

Answer 1

You are not adding the field you defined to the fields in the serializer's Meta. Try this:
class MessageSerializer(ModelSerializer):
sender = UserMobileSerializer(read_only=True)
class Meta:
model = Messages
fields = ('your', 'fields', 'sender')
EDIT: You need to serialize target, too. Like this:
class TargetSerializer(ModelSerializer):
class Meta:
model = Target
fields = ('id', 'title') # Add fields you want to get in the response.
class MessageSerializer(ModelSerializer):
target = TargetSerializer(read_only=True) # You should have TargetSerializer defined
sender = UserMobileSerializer(read_only=True)
class Meta:
model = Messages
fields = ('your', 'fields', 'target', 'sender')