Django使用相关实体字段序列化Queryset

Question

I'm trying to join 2 entities, get specific fields from them, and return a JSON of that.
I tried writing the following code:

import datetime
result = Foo.objects.all()
result = result.select_related('bar').extra(select={'bar_has_address':'IF(bar.has_address = '',0,1)'})
result = result.filter(time__gte=datetime.date.today())
return HttpResponse(serializers.serialize('json', result),mimetype="application/json")

Now I'm only getting a json containing the fields of Foo, whereas I want to get Bar's fields as well, ideally the returned JSON would have specific fields from both entities:

[{
    'name': 'lorem ipsum', //from Foo
    'has_address': 1, //from Bar
    'address': 'some address', //from Bar
    'id': 1, //from Foo
},... ]

even under result.values('...') I'm not getting any of Bar's fields
What am I missing here?

Answer 1

As far as I know, django built-in serializers cannot work with model related fields. Take a look at:

• DjangoFullSerializers
• this answer and suggested serializer
• relevant open ticket in django issue tracker

Also see:

• Django serialization of inherited model
• Serialize django models with reverse One-To-One fields to JSON

Hope that helps.