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
Topic.transaction do
@topic.category_id = SiteSetting.allow_uncategorized_topics ? SiteSetting.uncategorized_category_id : Category.where(read_restricted: false).first.id
@topic.archetype = Archetype.default
@topic.save
update_user_stats
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
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
user.user_stat.post_count -= 1
user.user_stat.save!
end
@topic.topic_allowed_users.build(user_id: @user.id)
# 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.topic_allowed_users(true).each do |tau|
next if tau.user_id == -1 || tau.user_id == topic.user_id
topic.notifier.watch!(tau.user_id)
end
end
end