One comment per discussion

GeekyNow

I wanted to allow my forum users to post only one comment per discussion. How to make it possible?

peregrine

write a plugin that checks the id's of all users in that specific discussion. if there is a match prohibit the posting.

or beforesavecomment trigger.

check the comment table for the specific discussionid and userid of poster if it returns null allow the post. (if the person is not editing the comment).

Bleistivt

Adding to what peregrine said:

Take a look at the InThisDiscussionModule
https://github.com/vanilla/vanilla/blob/master/plugins/VanillaInThisDiscussion/class.inthisdiscussionmodule.php

It should give you an idea how to query for users of a discussion.