Forbidden (403) CSRF verification failed. Request aborted.

django

Debug = True の状態で formのテストしてたら、

Forbidden (403) CSRF verification failed. Request aborted.

Help
Reason given for failure:
    CSRF token missing or incorrect.
    
In general, this can occur when there is a genuine Cross Site Request Forgery, or when Django's CSRF mechanism has not been used correctly. For POST forms, you need to ensure:
Your browser is accepting cookies.
The view function uses RequestContext for the template, instead of Context.
In the template, there is a {% csrf_token %} template tag inside each POST form that targets an internal URL.
If you are not using CsrfViewMiddleware, then you must use csrf_protect on any views that use the csrf_token template tag, as well as those that accept the POST data.
You're seeing the help section of this page because you have DEBUG = True in your Django settings file. Change that to False, and only the initial error message will be displayed.
You can customize this page using the CSRF_FAILURE_VIEW setting.

色々理由はあるだろうけど、 テンプレート内に formの上に {% csrf_token %} を入れたらすんなりいった。