Dynamyc model

dynamically.py

def add_field(sender, object):
    table_name = sender._meta.db_table
    app = sender._meta.app_label
    model = sender.__name__.lower()
    if object.system:
        field = get_model_field(sender, object)
        if field is not None:
            field.verbose_name = object.label
            if field.null:
                field.blank = not object.required
            return None

    if object.typefield.nonfield:
        return None

    if not search_field(sender, object.name):

        field = get_field(object)
        field.contribute_to_class(sender, object.name)
        field2 = copy.deepcopy(field)
        db_column_names = [row[0] for row in
                           connection.introspection.get_table_description(connection.cursor(), table_name)]
        if field.column not in db_column_names:
            db.start_transaction()
            db.add_column(table_name, field.column, field)
            db.execute_deferred_sql()
            db.commit_transaction()

model.py

from django.db.models.signals import class_prepared
from livesettings.functions import ConfigurationSettings

import config


def add_field(sender, **kwargs):
    """
    class_prepared signal handler that checks for the model named
    MyModel as the sender, and adds a new Field to it
    to it.
    """

    if sys is None or (
            'schemamigration' not in sys.argv and 'migrate' not in sys.argv and 'syncdb' not in sys.argv):  # and 'test' not in sys.argv
        if hasattr(sender, 'dynamic'):
            # if sender.__name__ == 'Site':
            for p in FieldModel.objects.all().filter(model=sender.__name__, deleted=False, system=False,
                                                     preexists=None):
                dynamically.add_field(sender, p)

            mgr = ConfigurationSettings()
            mgr.get_config("rnd", "RESTART_SERVER_FIELD").update(False)

    connection.close()


class_prepared.connect(add_field)