1.3. Get specific content types

1.3.1. Situation

All content types of LFC inherit from LFC’s BaseContent type. In order to get a list of all content types one could try to do:


The problem with this is, that Django will deliver instances of BaseContent (via a query set) and not, as you might expect, the specific content objects.

1.3.2. Approaches

There are several ways to get around that:

  1. Use the instance of a BaseContent to get the specific content type:

    from lfc.models import BaseContent
    obj = BaseContent.objects.get(pk=1)
    ct = obj.get_content_object()

    which is of course the same as:

    obj = BaseContent.objects.get(pk=1).get_content_object()
  2. Use the get_content_objects method of the LFC specific query set:

    qs = BaseContent.objects.filter(pk=1)
    objs = qs.get_content_objects()

As get_content_objects is a method of the query set you can use it at the end of the Django’s common query set chains, e.g.:

objs = BaseContent.objects.filter(pk=1).get_content_objects()
objs = BaseContent.objects.restricted(request).filter(pk=1).get_content_objects()
objs = BaseContent.objects.filter(langugae="en").exclude(pk=1).get_content_objects()

Please note: get_content_objects itselfs returns a list of objects so you can’t call query set methods on it.

  1. Use the provided utility methods:

    import lfc.utils
    obj = lfc.utils.get_content_object(pk=1)
    objs = lfc.utils.get_content_objects(pk=1)

You can also pass the request in order to take care of the current users’ permissions:

obj = lfc.utils.get_content_object(request, pk=1)
objs = lfc.utils.get_content_objects(request, pk=1)