Django admin, Proper way to create change_form that don't really save objects -

Django admin, Proper way to create change_form that don't really save objects -

let's have model message. in admin, need add together message submitting/uploading message file, not posting message fields would. process is, file uploaded, send processing programme parse file, farther processing , add together entry database.

so create custom form modeladmin(assign form = customform) 1 filefield , override save_model() not save anything. however, isn't proper way doc mention modeladmin's save_model() method not veto purpose. proper way this?

some suggest button pointed custom view, while it's surelly possible logically i'm still adding message view doesn't seem nature.

django