Synnefo

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from django.db.backends.signals import connection_created

def activate_foreign_keys(sender, connection, **kwargs):

    """Enable integrity constraint with sqlite."""

    if connection.settings_dict['ENGINE'] == 'django.db.backends.sqlite3':

        cursor = connection.cursor()

        cursor.execute('PRAGMA foreign_keys = ON')

connection_created.connect(activate_foreign_keys)