initial_data attribute support for django models (like a fixture but only once model is created)

__init__.py

# myproject/myapp/management/__init__.py

from django.db.models.signals import post_syncdb

import myapp.models

def post_syncdb_handler(sender, **kwargs):
    '''
    Handler will be called on every syncdb to set initial data for models if `initial_data` attr
    is set.

    `initial_data` model attribute uses the same format of django fixtures but 'model' attribute
    is ignored (model class is used instead).

    :param sender:
    :param kwargs:
    :return:
    '''
    nmodels = 0
    nrows = 0
    for model in kwargs.get('created_models', ()):
        irows = nrows
        for row in getattr(model, 'initial_data', ()):
            nrows += 1
            model(pk=row['pk'], **row['fields']).save()
        if irows < nrows:
            nmodels += 1
    if nmodels:
        print 'Initial data set (%d rows) for %d models.' % (nrows, nmodels)
    else:
        print 'No initial data set.'

post_syncdb.connect(post_syncdb_handler, sender=myapp.models)