# Signals sent by the comments app

The comment app sends a series of signals to allow for comment moderation and similar activities. See the introduction to signals for information about how to register for and receive these signals.

## comment_will_be_posted

django_comments.signals.comment_will_be_posted

Sent just before a comment will be saved, after it’s been sanity checked and submitted. This can be used to modify the comment (in place) with posting details or other such actions.

If any receiver returns `False` the comment will be discarded and a 400 response will be returned.

This signal is sent at more or less the same time (just before, actually) as the `Comment` object’s `pre_save` signal.

Arguments sent with this signal:

`sender`

  The comment model.

`comment`

  The comment instance about to be posted. Note that it won’t have been saved into the database yet, so it won’t have a primary key, and any relations might not work correctly yet.

`request`

  The `HttpRequest` that posted the comment.

## comment_was_posted

django_comments.signals.comment_was_posted

Sent just after the comment is saved.

Arguments sent with this signal:

`sender`

  The comment model.

`comment`

  The comment instance that was posted. Note that it will have already been saved, so if you modify it you’ll need to call `save()` again.

`request`

  The `HttpRequest` that posted the comment.

## comment_was_flagged

django_comments.signals.comment_was_flagged

Sent after a comment was “flagged” in some way. Check the flag to see if this was a user requesting removal of a comment, a moderator approving/removing a comment, or some other custom user flag.

Arguments sent with this signal:

`sender`

  The comment model.

`comment`

  The comment instance that was posted. Note that it will have already been saved, so if you modify it you’ll need to call `save()` again.

`flag`

  The `django_comments.models.CommentFlag` that’s been attached to the comment.

`created`

  `True` if this is a new flag; `False` if it’s a duplicate flag.

`request`

  The `HttpRequest` that posted the comment.