Django function for loading fixtures which use the current migration state of the model

migration_loaddata.py

from django.core import serializers

import os

def loaddata(fixture_name, apps, ignorenonexistent=True):
    """
    Loads migrations that work at current state of a model, in constrast to
    `loaddata` which requires a fixture to have data matching the fields
    defined in `models.py`.

    """
    # relative path to fixtures
    fixtures_dir = 'fixtures'

    # monkey patch serializers `apps` so that it uses the models in the current migration state
    original_apps = serializers.python.apps
    serializers.python.apps = apps

    objects = None
    for extension in ['json', 'yaml', 'xml']:
        fixture_path = os.path.join(os.path.dirname(__file__), fixtures_dir, '%s.%s' % (fixture_name, extension))
        if os.path.exists(fixture_path):
            print "Loading fixtures from %s... " % fixture_path,
            with open(fixture_path, 'rb') as f:
                objects = serializers.deserialize(extension, f, ignorenonexistent=ignorenonexistent)
                n = 0
                for obj in objects:
                    obj.save()
                    n += 1
                print "loaded %d objects." % n

    serializers.python.apps = original_apps


    if objects is None:
        raise Exception("Couldn't find the '%s' fixture for the '%s' app." % (fixture_name, app_label))

You can also make the call to loaddata directly. Don't need to replicate the code here. Just a django.core.management.call_command("loaddata", ignorenonexistent=ignorenonexistent) will do. Even if it reimports the serializers module, the monkeypatch is still there.