There should be a way to perform operations once the admin is done with a form

[info.ksamuel@…]

Currently, adding m2m relationships programatically on a model save() is tricky if you want to use the admin: the admin calls save_m2m that clear the relationship and don't let you to hook something easily after that.

You can see the problem here:

​http://stackoverflow.com/questions/4432385/django-how-to-save-m2m-data-via-post-save-signal

And here as well, with a workaround:

​http://stackoverflow.com/questions/3652585/simple-django-form-model-save-question

Some kind of after_form_save signal would be great for this situation.

[Julien Phalip]

Wouldn't it be an easier and cleaner work-around to alter the form's values from inside the ModelAdmin.save_model() hook?

[Julien Phalip]

Closing this as a duplicate of #16115 which, although newer, formulates the feature a bit more clearly and has a patch.