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Update tag metadata when posts are altered

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This commit is contained in:
Toby Zerner 2015-06-19 11:17:43 +09:30
parent d91f208b1e
commit 37c0b91614
1 changed files with 43 additions and 15 deletions
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58
extensions/tags/src/Handlers/TagMetadataUpdater.php
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@ -5,6 +5,11 @@ use Flarum\Tags\Events\DiscussionWasTagged;
use Flarum\Core\Events\DiscussionWasStarted;
use Flarum\Core\Events\DiscussionWasDeleted;
use Flarum\Core\Models\Discussion;
use Flarum\Core\Models\Post;
use Flarum\Core\Events\PostWasPosted;
use Flarum\Core\Events\PostWasDeleted;
use Flarum\Core\Events\PostWasHidden;
use Flarum\Core\Events\PostWasRestored;
class TagMetadataUpdater
{
@ -13,43 +18,66 @@ class TagMetadataUpdater
$events->listen('Flarum\Core\Events\DiscussionWasStarted', __CLASS__.'@whenDiscussionWasStarted');
$events->listen('Flarum\Tags\Events\DiscussionWasTagged', __CLASS__.'@whenDiscussionWasTagged');
$events->listen('Flarum\Core\Events\DiscussionWasDeleted', __CLASS__.'@whenDiscussionWasDeleted');
$events->listen('Flarum\Core\Events\PostWasPosted', __CLASS__.'@whenPostWasPosted');
$events->listen('Flarum\Core\Events\PostWasDeleted', __CLASS__.'@whenPostWasDeleted');
$events->listen('Flarum\Core\Events\PostWasHidden', __CLASS__.'@whenPostWasHidden');
$events->listen('Flarum\Core\Events\PostWasRestored', __CLASS__.'@whenPostWasRestored');
}
public function whenDiscussionWasStarted(DiscussionWasStarted $event)
{
$tags = $event->discussion->tags();
$this->updateTags($tags, 1, $event->discussion);
$this->updateTags($event->discussion, 1);
}
public function whenDiscussionWasTagged(DiscussionWasTagged $event)
{
$oldTags = Tag::whereIn('id', array_pluck($event->oldTags, 'id'));
$this->updateTags($oldTags, -1, $event->discussion);
$this->updateTags($event->discussion, -1, $oldTags);
$newTags = $event->discussion->tags();
$this->updateTags($newTags, 1, $event->discussion);
$this->updateTags($event->discussion, 1);
}
public function whenDiscussionWasDeleted(DiscussionWasDeleted $event)
{
$tags = $event->discussion->tags();
$this->updateTags($event->discussion, -1);
$this->updateTags($tags, -1, $event->discussion);
$tags->detach();
$event->discussion->tags()->detach();
}
protected function updateTags($query, $delta, $discussion)
public function whenPostWasPosted(PostWasPosted $event)
{
foreach ($query->get() as $tag) {
$this->updateTags($event->post->discussion);
}
public function whenPostWasDeleted(PostWasDeleted $event)
{
$this->updateTags($event->post->discussion);
}
public function whenPostWasHidden(PostWasHidden $event)
{
$this->updateTags($event->post->discussion);
}
public function whenPostWasRestored(PostWasRestored $event)
{
$this->updateTags($event->post->discussion);
}
protected function updateTags($discussion, $delta = 0, $tags = null)
{
if (! $tags) {
$tags = $discussion->getRelation('tags');
}
foreach ($tags as $tag) {
$tag->discussions_count += $delta;
if ($delta > 0 && max($discussion->start_time, $discussion->last_time) > $tag->last_time) {
if ($discussion->last_time > $tag->last_time) {
$tag->setLastDiscussion($discussion);
} elseif ($delta < 0 && $discussion->id == $tag->last_discussion_id) {
} elseif ($discussion->id == $tag->last_discussion_id) {
$tag->refreshLastDiscussion();
}