class IntroductionUpdater def initialize(user) @user = user end def get_summary summary_from_post(find_welcome_post) end def update_summary(new_value) post = find_welcome_post return unless post previous_value = summary_from_post(post).strip if previous_value != new_value revisor = PostRevisor.new(post) remaining = post.raw.split("\n")[1..-1] revisor.revise!(@user, raw: "#{new_value}\n#{remaining.join("\n")}") end end protected def summary_from_post(post) return post ? post.raw.split("\n").first : nil end def find_welcome_post topic_id = SiteSetting.welcome_topic_id if topic_id <= 0 title = I18n.t("discourse_welcome_topic.title") topic_id = find_topic_id(title) end if topic_id.blank? title = I18n.t("discourse_welcome_topic.title", locale: :en) topic_id = find_topic_id(title) end if topic_id.blank? topic_id = Topic.listable_topics .where(pinned_globally: true) .order(:created_at) .limit(1) .pluck(:id) end welcome_topic = Topic.where(id: topic_id).first return nil if welcome_topic.blank? welcome_topic.first_post end def find_topic_id(topic_title) slug = Slug.for(topic_title, nil) return nil if slug.blank? Topic.listable_topics .where(slug: slug) .pluck(:id) end end