Question

My django models looks like:

class Session(models.Model):
    ...

class Document(models.Model):
    session = models.ForeignKey(Session)
    date_created = models.DateTimeField(auto_now_add=True)

    class Meta:
        abstract = True

class Invoice(Document):
    number = models.PositiveIntegerField()
    # and some other fields

class SupplyRequest(Document):
    # fields here

That way, every Invoice and SupplyRequest instances are linked to a Session and have a date_created attribute. OK. So, I created a ModelResource for Session and for Invoice, imagining that Tastypie can walk through Document model fields transparently. But does not work:

class SessionResource(ModelResource):

    class Meta:
        queryset = Session.objects.all()
        ...

class InvoiceResource(ModelResource):

    session = fields.ForeignKey(SessionResource, 'session')

    class Meta:
        queryset = Invoice.objects.all()
        ...

When I try to serialize an Invoice I got the following error message:

NoReverseMatch: Reverse for 'api_dispatch_detail' with arguments '()' and keyword arguments '{'pk': 1, 'resource_name': 'session'}' not found.

Is there any way to deal with model inheritance using Tastypie?

I’ve forgotten to mention that Document model is an abstract class.

Answer 1

I think you must have forgotten to set the url SessionResource.

from tastypie.api import Api

api = Api()

api.register(SessionResource())

urlpatterns += patterns('',
    (r'^api/', include(api.urls)),
)

You do this in urls.py?

Hugs.