discourse/app/models/topic_converter.rb

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class TopicConverter
attr_reader :topic
def initialize(topic, user)
@topic = topic
@user = user
end
def convert_to_public_topic(category_id = nil)
Topic.transaction do
@topic.category_id =
if category_id
category_id
elsif SiteSetting.allow_uncategorized_topics
SiteSetting.uncategorized_category_id
else
Category.where(read_restricted: false)
.where.not(id: SiteSetting.uncategorized_category_id)
.order('id asc')
.pluck(:id).first
end
@topic.archetype = Archetype.default
@topic.save
update_user_stats
# TODO: Every post in a PRIVATE MESSAGE looks the same: each is a UserAction::NEW_PRIVATE_MESSAGE.
# So we need to remove all those user actions and re-log all the posts.
# Post counting depends on the correct UserActions (NEW_TOPIC, REPLY), so once a private topic
# becomes a public topic, post counts are wrong. The reverse is not so bad because
# we don't count NEW_PRIVATE_MESSAGE in any public stats.
# TBD: why do so many specs fail with this change?
# UserAction.where(target_topic_id: @topic.id, action_type: [UserAction::GOT_PRIVATE_MESSAGE, UserAction::NEW_PRIVATE_MESSAGE]).find_each do |ua|
# UserAction.remove_action!(ua.attributes.symbolize_keys.slice(:action_type, :user_id, :acting_user_id, :target_topic_id, :target_post_id))
# end
# @topic.posts.each do |post|
# UserActionCreator.log_post(post) unless post.post_number == 1
# end
watch_topic(topic)
end
@topic
end
def convert_to_private_message
Topic.transaction do
@topic.category_id = nil
@topic.archetype = Archetype.private_message
add_allowed_users
@topic.save!
watch_topic(topic)
end
@topic
end
private
def update_user_stats
@topic.posts.where(deleted_at: nil).each do |p|
user = User.find(p.user_id)
# update posts count. NOTE that DirectoryItem.refresh will overwrite this by counting UserAction records.
user.user_stat.post_count += 1
user.user_stat.save!
end
# update topics count
@topic.user.user_stat.topic_count += 1
@topic.user.user_stat.save!
end
def add_allowed_users
@topic.posts.where(deleted_at: nil).each do |p|
user = User.find(p.user_id)
@topic.topic_allowed_users.build(user_id: user.id) unless @topic.topic_allowed_users.where(user_id: user.id).exists?
# update posts count. NOTE that DirectoryItem.refresh will overwrite this by counting UserAction records.
user.user_stat.post_count -= 1
user.user_stat.save!
end
@topic.topic_allowed_users.build(user_id: @user.id) unless @topic.topic_allowed_users.where(user_id: @user.id).exists?
# update topics count
@topic.user.user_stat.topic_count -= 1
@topic.user.user_stat.save!
end
def watch_topic(topic)
@topic.notifier.watch_topic!(topic.user_id)
@topic.reload.topic_allowed_users.each do |tau|
next if tau.user_id < 0 || tau.user_id == topic.user_id
topic.notifier.watch!(tau.user_id)
end
end
end