Check if django DB migrations is not synchronized. Import `exit_if_db_not_synchronized` in wsgi.py

django_db.py

# coding: utf-8

from __future__ import absolute_import

import functools
from django.db import close_old_connections, connections, DEFAULT_DB_ALIAS
from django.db.migrations.executor import MigrationExecutor


def close_connection_after_call(f):
    @functools.wraps(f)
    def wrapper(*args, **kwargs):
        result = f(*args, **kwargs)
        close_old_connections()
        return result
    return wrapper


def is_db_synchronized(database=DEFAULT_DB_ALIAS):
    connection = connections[database]
    connection.prepare_database()
    executor = MigrationExecutor(connection)
    targets = executor.loader.graph.leaf_nodes()
    plan = executor.migration_plan(targets)
    if plan:
        print('has migration plan: {}'.format(plan))
        return False
    return True


def exit_if_db_not_synchronized():
    if not is_db_synchronized():
        raise SystemExit('exit because db migrations is not synchronized')