2019-05-02 18:17:27 -04:00
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# frozen_string_literal: true
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2013-03-18 17:52:29 -04:00
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#
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# How a post is deleted is affected by who is performing the action.
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# this class contains the logic to delete it.
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#
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class PostDestroyer
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2014-09-25 13:51:00 -04:00
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def self.destroy_old_hidden_posts
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2015-12-29 16:59:26 -05:00
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Post.where(deleted_at: nil, hidden: true)
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2014-09-25 13:51:00 -04:00
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.where("hidden_at < ?", 30.days.ago)
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.find_each do |post|
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PostDestroyer.new(Discourse.system_user, post).destroy
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end
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end
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2013-07-22 03:48:24 -04:00
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def self.destroy_stubs
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2017-04-24 22:19:21 -04:00
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context = I18n.t('remove_posts_deleted_by_author')
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2013-07-23 02:11:44 -04:00
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# exclude deleted topics and posts that are actively flagged
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2013-07-22 03:48:24 -04:00
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Post.where(deleted_at: nil, user_deleted: true)
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2013-07-23 02:11:44 -04:00
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.where("NOT EXISTS (
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SELECT 1 FROM topics t
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WHERE t.deleted_at IS NOT NULL AND
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t.id = posts.topic_id
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)")
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2019-05-07 09:25:52 -04:00
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.where("updated_at < ?", SiteSetting.delete_removed_posts_after.hours.ago)
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2013-07-23 02:11:44 -04:00
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.where("NOT EXISTS (
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SELECT 1
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FROM post_actions pa
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2018-08-09 14:54:23 -04:00
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WHERE pa.post_id = posts.id
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AND pa.deleted_at IS NULL
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AND pa.deferred_at IS NULL
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AND pa.post_action_type_id IN (?)
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2013-07-23 02:11:44 -04:00
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)", PostActionType.notify_flag_type_ids)
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2017-04-24 22:19:21 -04:00
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.find_each do |post|
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PostDestroyer.new(Discourse.system_user, post, context: context).destroy
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2013-07-22 03:48:24 -04:00
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end
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end
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2019-11-27 15:19:44 -05:00
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def self.delete_with_replies(performed_by, post, reviewable = nil, defer_reply_flags: true)
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2019-05-27 12:27:16 -04:00
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reply_ids = post.reply_ids(Guardian.new(performed_by), only_replies_to_single_post: false)
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replies = Post.where(id: reply_ids.map { |r| r[:id] })
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2019-08-30 09:27:52 -04:00
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PostDestroyer.new(performed_by, post, reviewable: reviewable).destroy
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2019-11-27 15:19:44 -05:00
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replies.each { |reply| PostDestroyer.new(performed_by, reply, defer_flags: defer_reply_flags).destroy }
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2019-05-27 12:27:16 -04:00
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end
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2014-10-01 11:40:13 -04:00
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def initialize(user, post, opts = {})
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2014-08-07 13:12:35 -04:00
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@user = user
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@post = post
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2014-08-14 15:21:10 -04:00
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@topic = post.topic if post
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2014-10-01 11:40:13 -04:00
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@opts = opts
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2013-03-18 17:52:29 -04:00
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end
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def destroy
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2019-02-19 01:53:42 -05:00
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payload = WebHook.generate_payload(:post, @post) if WebHook.active_web_hooks(:post).exists?
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2018-10-05 04:53:59 -04:00
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topic = @post.topic
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2019-12-04 15:13:31 -05:00
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is_first_post = @post.is_first_post? && topic
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2018-10-05 04:53:59 -04:00
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2019-12-04 15:13:31 -05:00
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if is_first_post
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2018-10-05 04:53:59 -04:00
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topic_view = TopicView.new(topic.id, Discourse.system_user)
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2019-02-19 01:53:42 -05:00
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topic_payload = WebHook.generate_payload(:topic, topic_view, WebHookTopicViewSerializer) if WebHook.active_web_hooks(:topic).exists?
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2018-10-05 04:53:59 -04:00
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end
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2017-06-15 23:27:51 -04:00
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delete_removed_posts_after = @opts[:delete_removed_posts_after] || SiteSetting.delete_removed_posts_after
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2020-07-21 21:57:16 -04:00
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if @user.staff? || delete_removed_posts_after < 1 || post_is_reviewable?
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2014-10-06 16:29:20 -04:00
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perform_delete
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2013-03-18 17:52:29 -04:00
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elsif @user.id == @post.user_id
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2017-06-15 23:27:51 -04:00
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mark_for_deletion(delete_removed_posts_after)
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2013-03-18 17:52:29 -04:00
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end
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2019-01-03 12:03:01 -05:00
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UserActionManager.post_destroyed(@post)
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2015-05-15 03:24:48 -04:00
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DiscourseEvent.trigger(:post_destroyed, @post, @opts, @user)
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2019-03-06 12:22:54 -05:00
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WebHook.enqueue_post_hooks(:post_destroyed, @post, payload)
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2016-09-05 07:00:49 -04:00
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2019-12-04 15:13:31 -05:00
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if is_first_post
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2019-12-09 14:15:47 -05:00
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UserProfile.remove_featured_topic_from_all_profiles(@topic)
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2019-12-04 15:13:31 -05:00
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UserActionManager.topic_destroyed(topic)
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DiscourseEvent.trigger(:topic_destroyed, topic, @user)
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WebHook.enqueue_topic_hooks(:topic_destroyed, topic, topic_payload)
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2016-09-05 07:00:49 -04:00
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end
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2013-03-18 17:52:29 -04:00
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end
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2013-07-22 03:48:24 -04:00
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def recover
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2020-07-21 21:57:16 -04:00
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if (@user.staff? || post_is_reviewable?) && @post.deleted_at
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2013-07-22 03:48:24 -04:00
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staff_recovered
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elsif @user.staff? || @user.id == @post.user_id
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user_recovered
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end
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2014-12-09 14:42:24 -05:00
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topic = Topic.with_deleted.find @post.topic_id
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2020-02-06 03:19:04 -05:00
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topic.update_column(:user_id, Discourse::SYSTEM_USER_ID) if !topic.user_id
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2019-01-03 12:03:01 -05:00
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topic.recover!(@user) if @post.is_first_post?
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2014-12-09 14:42:24 -05:00
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topic.update_statistics
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2019-01-03 12:03:01 -05:00
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UserActionManager.post_created(@post)
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2015-05-15 03:24:48 -04:00
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DiscourseEvent.trigger(:post_recovered, @post, @opts, @user)
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2018-03-21 00:15:16 -04:00
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if @post.is_first_post?
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2019-03-29 09:36:29 -04:00
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UserActionManager.topic_created(topic)
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2018-03-21 00:15:16 -04:00
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DiscourseEvent.trigger(:topic_recovered, topic, @user)
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StaffActionLogger.new(@user).log_topic_delete_recover(topic, "recover_topic", @opts.slice(:context)) if @user.id != @post.user_id
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end
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2013-07-22 03:48:24 -04:00
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end
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def staff_recovered
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2020-07-16 10:15:01 -04:00
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new_post_attrs = { user_deleted: false }
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new_post_attrs[:user_id] = Discourse::SYSTEM_USER_ID if !@post.user_id
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@post.update_columns(new_post_attrs)
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2013-07-22 03:48:24 -04:00
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@post.recover!
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2016-06-12 23:25:06 -04:00
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2019-03-28 02:28:01 -04:00
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mark_topic_changed
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2018-07-03 22:50:51 -04:00
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if @post.topic && !@post.topic.private_message?
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if author = @post.user
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if @post.is_first_post?
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author.user_stat.topic_count += 1
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else
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author.user_stat.post_count += 1
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end
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author.user_stat.save!
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2017-11-09 18:05:53 -05:00
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end
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2016-06-12 23:25:06 -04:00
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2018-07-03 22:50:51 -04:00
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if @post.is_first_post?
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# Update stats of all people who replied
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counts = Post.where(post_type: Post.types[:regular], topic_id: @post.topic_id).where('post_number > 1').group(:user_id).count
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counts.each do |user_id, count|
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if user_stat = UserStat.where(user_id: user_id).first
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2019-04-29 03:32:25 -04:00
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user_stat.update(post_count: user_stat.post_count + count)
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2018-07-03 22:50:51 -04:00
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end
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2017-11-09 18:05:53 -05:00
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end
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end
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end
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2014-08-28 23:34:32 -04:00
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@post.publish_change_to_clients! :recovered
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2017-11-09 18:05:53 -05:00
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TopicTrackingState.publish_recover(@post.topic) if @post.topic && @post.is_first_post?
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2013-07-22 03:48:24 -04:00
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end
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2013-03-18 17:52:29 -04:00
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# When a post is properly deleted. Well, it's still soft deleted, but it will no longer
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# show up in the topic
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2014-10-06 16:29:20 -04:00
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def perform_delete
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2013-03-18 17:52:29 -04:00
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Post.transaction do
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2014-02-06 07:54:34 -05:00
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@post.trash!(@user)
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2013-07-23 11:50:58 -04:00
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if @post.topic
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2014-02-06 07:54:34 -05:00
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make_previous_post_the_last_one
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2019-03-28 02:28:01 -04:00
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mark_topic_changed
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2014-02-06 07:54:34 -05:00
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clear_user_posted_flag
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Topic.reset_highest(@post.topic_id)
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2013-07-09 15:20:18 -04:00
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end
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2014-07-28 13:17:37 -04:00
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trash_public_post_actions
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2014-06-04 11:41:11 -04:00
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trash_user_actions
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2014-02-06 07:54:34 -05:00
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remove_associated_replies
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remove_associated_notifications
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2015-04-23 13:33:29 -04:00
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if @post.topic && @post.is_first_post?
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2018-03-21 00:15:16 -04:00
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StaffActionLogger.new(@user).log_topic_delete_recover(@post.topic, "delete_topic", @opts.slice(:context)) if @user.id != @post.user_id
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2014-10-01 11:40:13 -04:00
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@post.topic.trash!(@user)
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2014-10-06 16:29:20 -04:00
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elsif @user.id != @post.user_id
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2014-10-01 11:40:13 -04:00
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StaffActionLogger.new(@user).log_post_deletion(@post, @opts.slice(:context))
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end
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2014-02-06 07:54:34 -05:00
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update_associated_category_latest_topic
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2014-08-14 15:21:10 -04:00
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update_user_counts
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2015-06-17 19:58:32 -04:00
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TopicUser.update_post_action_cache(post_id: @post.id)
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2019-01-03 12:03:01 -05:00
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2018-11-21 21:25:19 -05:00
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DB.after_commit do
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2019-08-30 09:27:52 -04:00
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if @opts[:reviewable]
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notify_deletion(@opts[:reviewable])
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elsif reviewable = @post.reviewable_flag
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@opts[:defer_flags] ? ignore(reviewable) : agree(reviewable)
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2018-11-29 12:14:18 -05:00
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end
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2018-11-21 21:25:19 -05:00
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end
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2013-03-18 17:52:29 -04:00
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end
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2014-06-04 00:10:34 -04:00
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2015-04-06 03:27:05 -04:00
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feature_users_in_the_topic if @post.topic
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2014-08-28 23:34:32 -04:00
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@post.publish_change_to_clients! :deleted if @post.topic
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2016-03-29 20:17:52 -04:00
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TopicTrackingState.publish_delete(@post.topic) if @post.topic && @post.post_number == 1
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2013-03-18 17:52:29 -04:00
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end
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# When a user 'deletes' their own post. We just change the text.
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2017-06-15 23:27:51 -04:00
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def mark_for_deletion(delete_removed_posts_after = SiteSetting.delete_removed_posts_after)
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2015-01-24 21:19:57 -05:00
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I18n.with_locale(SiteSetting.default_locale) do
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2016-06-22 03:28:46 -04:00
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# don't call revise from within transaction, high risk of deadlock
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2019-03-29 12:10:05 -04:00
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key = @post.is_first_post? ? 'js.topic.deleted_by_author' : 'js.post.deleted_by_author'
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2017-06-15 23:27:51 -04:00
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@post.revise(@user,
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2019-03-29 12:10:05 -04:00
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{ raw: I18n.t(key, count: delete_removed_posts_after) },
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2019-06-20 11:23:49 -04:00
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force_new_version: true,
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deleting_post: true
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2017-06-15 23:27:51 -04:00
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)
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2016-06-22 03:28:46 -04:00
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2015-01-24 21:19:57 -05:00
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Post.transaction do
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@post.update_column(:user_deleted, true)
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@post.topic_links.each(&:destroy)
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2019-05-07 09:25:52 -04:00
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@post.topic.update_column(:closed, true) if @post.is_first_post?
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2015-01-24 21:19:57 -05:00
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end
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2013-03-18 17:52:29 -04:00
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end
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end
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2013-07-22 03:48:24 -04:00
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def user_recovered
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2019-04-11 16:21:00 -04:00
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return unless @post.user_deleted?
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2013-07-22 03:48:24 -04:00
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Post.transaction do
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@post.update_column(:user_deleted, false)
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2013-09-06 11:50:05 -04:00
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@post.skip_unique_check = true
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2019-05-07 09:25:52 -04:00
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@post.topic.update_column(:closed, false) if @post.is_first_post?
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2013-07-22 03:48:24 -04:00
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end
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2016-06-22 03:28:46 -04:00
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# has internal transactions, if we nest then there are some very high risk deadlocks
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2018-09-21 04:34:45 -04:00
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last_revision = @post.revisions.last
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2019-04-10 13:10:21 -04:00
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if last_revision.present? && last_revision.modifications['raw'].present?
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@post.revise(@user, { raw: last_revision.modifications["raw"][0] }, force_new_version: true)
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end
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2013-07-22 03:48:24 -04:00
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end
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2014-02-06 07:54:34 -05:00
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private
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2020-07-21 21:57:16 -04:00
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def post_is_reviewable?
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2020-07-27 22:06:15 -04:00
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topic = @post.topic || Topic.with_deleted.find(@post.topic_id)
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Guardian.new(@user).can_review_topic?(topic) && Reviewable.exists?(target: @post)
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2020-07-21 21:57:16 -04:00
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end
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2019-03-28 02:28:01 -04:00
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# we need topics to change if ever a post in them is deleted or created
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# this ensures users relying on this information can keep unread tracking
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# working as desired
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def mark_topic_changed
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# make this as fast as possible, can bypass everything
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DB.exec(<<~SQL, updated_at: Time.now, id: @post.topic_id)
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UPDATE topics
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SET updated_at = :updated_at
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WHERE id = :id
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SQL
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end
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2014-02-06 07:54:34 -05:00
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def make_previous_post_the_last_one
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2019-03-28 02:28:01 -04:00
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last_post = Post
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.select(:created_at, :user_id, :post_number)
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.where("topic_id = ? and id <> ?", @post.topic_id, @post.id)
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.order('created_at desc')
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.limit(1)
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.first
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2018-07-13 12:15:59 -04:00
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if last_post.present? && @post.topic.present?
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topic = @post.topic
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topic.last_posted_at = last_post.created_at
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topic.last_post_user_id = last_post.user_id
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topic.highest_post_number = last_post.post_number
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2019-03-28 02:28:01 -04:00
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# we go via save here cause we need to run hooks
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2018-07-13 12:15:59 -04:00
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topic.save!(validate: false)
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2014-02-06 07:54:34 -05:00
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end
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end
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def clear_user_posted_flag
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unless Post.exists?(["topic_id = ? and user_id = ? and id <> ?", @post.topic_id, @post.user_id, @post.id])
|
|
|
|
TopicUser.where(topic_id: @post.topic_id, user_id: @post.user_id).update_all 'posted = false'
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
def feature_users_in_the_topic
|
2015-04-06 03:27:05 -04:00
|
|
|
Jobs.enqueue(:feature_topic_users, topic_id: @post.topic_id)
|
2014-02-06 07:54:34 -05:00
|
|
|
end
|
|
|
|
|
2014-07-28 13:17:37 -04:00
|
|
|
def trash_public_post_actions
|
2018-10-02 11:25:08 -04:00
|
|
|
if public_post_actions = PostAction.publics.where(post_id: @post.id)
|
|
|
|
public_post_actions.each { |pa| pa.trash!(@user) }
|
2014-02-06 07:54:34 -05:00
|
|
|
|
2018-10-02 11:25:08 -04:00
|
|
|
@post.custom_fields["deleted_public_actions"] = public_post_actions.ids
|
|
|
|
@post.save_custom_fields
|
|
|
|
|
|
|
|
f = PostActionType.public_types.map { |k, _| ["#{k}_count", 0] }
|
|
|
|
Post.with_deleted.where(id: @post.id).update_all(Hash[*f.flatten])
|
|
|
|
end
|
2014-02-06 07:54:34 -05:00
|
|
|
end
|
|
|
|
|
2019-01-03 12:03:01 -05:00
|
|
|
def agree(reviewable)
|
2019-08-30 09:27:52 -04:00
|
|
|
notify_deletion(reviewable)
|
2019-01-03 12:03:01 -05:00
|
|
|
result = reviewable.perform(@user, :agree_and_keep, post_was_deleted: true)
|
|
|
|
reviewable.transition_to(result.transition_to, @user)
|
2018-11-26 10:58:37 -05:00
|
|
|
end
|
|
|
|
|
2019-01-03 12:03:01 -05:00
|
|
|
def ignore(reviewable)
|
|
|
|
reviewable.perform_ignore(@user, post_was_deleted: true)
|
|
|
|
reviewable.transition_to(:ignored, @user)
|
2018-11-29 12:14:18 -05:00
|
|
|
end
|
|
|
|
|
2019-08-30 09:27:52 -04:00
|
|
|
def notify_deletion(reviewable)
|
2020-03-11 08:03:20 -04:00
|
|
|
return if @post.user.blank?
|
|
|
|
|
2019-08-30 09:27:52 -04:00
|
|
|
allowed_user = @user.human? && @user.staff?
|
|
|
|
return unless allowed_user && rs = reviewable.reviewable_scores.order('created_at DESC').first
|
|
|
|
|
|
|
|
Jobs.enqueue(
|
|
|
|
:send_system_message,
|
|
|
|
user_id: @post.user_id,
|
|
|
|
message_type: :flags_agreed_and_post_deleted,
|
|
|
|
message_options: {
|
|
|
|
flagged_post_raw_content: @post.raw,
|
|
|
|
url: @post.url,
|
|
|
|
flag_reason: I18n.t(
|
|
|
|
"flag_reasons.#{PostActionType.types[rs.reviewable_score_type]}",
|
|
|
|
locale: SiteSetting.default_locale,
|
|
|
|
base_path: Discourse.base_path
|
|
|
|
)
|
|
|
|
}
|
|
|
|
)
|
|
|
|
end
|
|
|
|
|
2014-06-04 11:41:11 -04:00
|
|
|
def trash_user_actions
|
|
|
|
UserAction.where(target_post_id: @post.id).each do |ua|
|
|
|
|
row = {
|
|
|
|
action_type: ua.action_type,
|
|
|
|
user_id: ua.user_id,
|
|
|
|
acting_user_id: ua.acting_user_id,
|
|
|
|
target_topic_id: ua.target_topic_id,
|
|
|
|
target_post_id: ua.target_post_id
|
|
|
|
}
|
|
|
|
UserAction.remove_action!(row)
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2014-02-06 07:54:34 -05:00
|
|
|
def remove_associated_replies
|
2020-01-17 11:24:49 -05:00
|
|
|
post_ids = PostReply.where(reply_post_id: @post.id).pluck(:post_id)
|
2014-02-06 07:54:34 -05:00
|
|
|
|
|
|
|
if post_ids.present?
|
2020-01-17 11:24:49 -05:00
|
|
|
PostReply.where(reply_post_id: @post.id).delete_all
|
2014-02-06 07:54:34 -05:00
|
|
|
Post.where(id: post_ids).each { |p| p.update_column :reply_count, p.replies.count }
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
def remove_associated_notifications
|
2017-08-31 00:06:56 -04:00
|
|
|
Notification
|
|
|
|
.where(topic_id: @post.topic_id, post_number: @post.post_number)
|
|
|
|
.delete_all
|
2014-02-06 07:54:34 -05:00
|
|
|
end
|
|
|
|
|
|
|
|
def update_associated_category_latest_topic
|
|
|
|
return unless @post.topic && @post.topic.category
|
2015-04-23 13:33:29 -04:00
|
|
|
return unless @post.id == @post.topic.category.latest_post_id || (@post.is_first_post? && @post.topic_id == @post.topic.category.latest_topic_id)
|
2014-02-06 07:54:34 -05:00
|
|
|
|
|
|
|
@post.topic.category.update_latest
|
|
|
|
end
|
|
|
|
|
2014-08-14 15:21:10 -04:00
|
|
|
def update_user_counts
|
|
|
|
author = @post.user
|
|
|
|
|
|
|
|
return unless author
|
|
|
|
|
|
|
|
author.create_user_stat if author.user_stat.nil?
|
|
|
|
|
|
|
|
if @post.created_at == author.user_stat.first_post_created_at
|
|
|
|
author.user_stat.first_post_created_at = author.posts.order('created_at ASC').first.try(:created_at)
|
|
|
|
end
|
|
|
|
|
2018-07-03 22:50:51 -04:00
|
|
|
if @post.topic && !@post.topic.private_message?
|
|
|
|
if @post.post_type == Post.types[:regular] && !@post.is_first_post? && !@topic.nil?
|
|
|
|
author.user_stat.post_count -= 1
|
|
|
|
end
|
|
|
|
author.user_stat.topic_count -= 1 if @post.is_first_post?
|
2017-11-02 16:43:09 -04:00
|
|
|
end
|
2014-08-14 15:21:10 -04:00
|
|
|
|
|
|
|
author.user_stat.save!
|
|
|
|
|
|
|
|
if @post.created_at == author.last_posted_at
|
|
|
|
author.last_posted_at = author.posts.order('created_at DESC').first.try(:created_at)
|
|
|
|
author.save!
|
|
|
|
end
|
2017-11-02 15:33:40 -04:00
|
|
|
|
|
|
|
if @post.is_first_post? && @post.topic && !@post.topic.private_message?
|
|
|
|
# Update stats of all people who replied
|
2017-11-09 18:05:53 -05:00
|
|
|
counts = Post.where(post_type: Post.types[:regular], topic_id: @post.topic_id).where('post_number > 1').group(:user_id).count
|
2017-11-02 15:33:40 -04:00
|
|
|
counts.each do |user_id, count|
|
|
|
|
if user_stat = UserStat.where(user_id: user_id).first
|
2019-04-29 03:32:25 -04:00
|
|
|
user_stat.update(post_count: user_stat.post_count - count)
|
2017-11-02 15:33:40 -04:00
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|
2014-08-14 15:21:10 -04:00
|
|
|
end
|
|
|
|
|
2013-05-03 03:56:23 -04:00
|
|
|
end
|