A bit of an edge-case since it shouldn't really be possible to have a discussion with zero posts anymore, but when renaming an empty discussion (or taking any action that will create an "event post"), Flarum would crash. This is due to the MergeableInterface requiring these posts to be saved after a previous post.
When renaming a discussion, an attempt is made to send a notification to the discussion's author. However, there is no check to see if the user account still exists - this can lead to a crash. While the check should technically be in the initiating code, it will probably slip through the cracks in other scenarios/extensions, so it's probably best that we safe-guard against this in the NotificationSyncer itself.
- On the front-end, correct the check to see if the discussion has no more posts
- On the back-end, run a query to count the posts instead of using the comments_count, because the comments_count does not include other deleted posts
Laravel's alpha_dash rule allows unicode letters including those with inflections, leading to issues like #832. As per discussion in #557, we are sticking with ASCII-only usernames for now.
This will make it much easier for extension developers (and also less
error-prone) to create migrations for things like creating tables,
renaming columns and so on...
It became apparent in https://github.com/flarum/core/issues/319#issuecomment-170558573 that there was no way for extensions to add filter parameters to the /api/posts endpoint (e.g. /api/posts?filter[mentioned]=1). Simply adding an event to modify the `$where` array severely limits how much can be done with the query. This commit refactors the controller so that filters are applied directly to the query Builder, and exposes the Builder in a new `ConfigurePostsQuery` event.
Allowing headStrings to be named is a bit of a stopgap solution. Really ClientView needs to be given much more power with headStrings and footStrings as separate objects, similar to the ItemList in the JS app.
