require_dependency 'topic_view' require_dependency 'promotion' require_dependency 'url_helper' require_dependency 'topics_bulk_action' require_dependency 'discourse_event' require_dependency 'rate_limiter' require_dependency 'topic_publisher' require_dependency 'post_action_destroyer' class TopicsController < ApplicationController requires_login only: [ :timings, :destroy_timings, :update, :update_shared_draft, :destroy, :recover, :status, :invite, :mute, :unmute, :set_notifications, :move_posts, :merge_topic, :clear_pin, :re_pin, :status_update, :timer, :bulk, :reset_new, :change_post_owners, :change_timestamps, :archive_message, :move_to_inbox, :convert_topic, :bookmark, :publish, :reset_bump_date ] before_action :consider_user_for_promotion, only: :show skip_before_action :check_xhr, only: [:show, :feed] def id_for_slug topic = Topic.find_by(slug: params[:slug].downcase) guardian.ensure_can_see!(topic) raise Discourse::NotFound unless topic render json: { slug: topic.slug, topic_id: topic.id, url: topic.url } end def show if request.referer flash["referer"] ||= request.referer[0..255] end # We'd like to migrate the wordpress feed to another url. This keeps up backwards compatibility with # existing installs. return wordpress if params[:best].present? # work around people somehow sending in arrays, # arrays are not supported params[:page] = params[:page].to_i rescue 1 opts = params.slice(:username_filters, :filter, :page, :post_number, :show_deleted) username_filters = opts[:username_filters] opts[:print] = true if params[:print].present? opts[:username_filters] = username_filters.split(',') if username_filters.is_a?(String) # Special case: a slug with a number in front should look by slug first before looking # up that particular number if params[:id] && params[:id] =~ /^\d+[^\d\\]+$/ topic = Topic.find_by(slug: params[:id].downcase) return redirect_to_correct_topic(topic, opts[:post_number]) if topic end if opts[:print] raise Discourse::InvalidAccess unless SiteSetting.max_prints_per_hour_per_user > 0 begin RateLimiter.new(current_user, "print-topic-per-hour", SiteSetting.max_prints_per_hour_per_user, 1.hour).performed! unless @guardian.is_admin? rescue RateLimiter::LimitExceeded return render_json_error I18n.t("rate_limiter.slow_down") end end begin @topic_view = TopicView.new(params[:id] || params[:topic_id], current_user, opts) rescue Discourse::NotFound if params[:id] topic = Topic.find_by(slug: params[:id].downcase) return redirect_to_correct_topic(topic, opts[:post_number]) if topic end raise Discourse::NotFound end page = params[:page] if (page < 0) || ((page - 1) * @topic_view.chunk_size > @topic_view.topic.highest_post_number) raise Discourse::NotFound end discourse_expires_in 1.minute if slugs_do_not_match || (!request.format.json? && params[:slug].nil?) redirect_to_correct_topic(@topic_view.topic, opts[:post_number]) return end track_visit_to_topic if should_track_visit_to_topic? @topic_view.draft = Draft.get(current_user, @topic_view.draft_key, @topic_view.draft_sequence) end unless @topic_view.topic.visible response.headers['X-Robots-Tag'] = 'noindex' end canonical_url UrlHelper.absolute_without_cdn(@topic_view.canonical_path) # provide hint to crawlers only for now # we would like to give them a bit more signal about age of data if use_crawler_layout? if last_modified = @topic_view.posts&.map { |p| p.updated_at }&.max&.httpdate response.headers['Last-Modified'] = last_modified end end perform_show_response rescue Discourse::InvalidAccess => ex if current_user # If the user can't see the topic, clean up notifications for it. Notification.remove_for(current_user.id, params[:topic_id]) end if ex.obj && Topic === ex.obj && guardian.can_see_topic_if_not_deleted?(ex.obj) raise Discourse::NotFound.new( "topic was deleted", status: 410, check_permalinks: true, original_path: ex.obj.relative_url ) end raise ex end def publish params.permit(:id, :destination_category_id) topic = Topic.find(params[:id]) category = Category.find(params[:destination_category_id]) guardian.ensure_can_publish_topic!(topic, category) topic = TopicPublisher.new(topic, current_user, category.id).publish! render_serialized(topic.reload, BasicTopicSerializer) end def wordpress params.require(:best) params.require(:topic_id) params.permit(:min_trust_level, :min_score, :min_replies, :bypass_trust_level_score, :only_moderator_liked) opts = { best: params[:best].to_i, min_trust_level: params[:min_trust_level] ? params[:min_trust_level].to_i : 1, min_score: params[:min_score].to_i, min_replies: params[:min_replies].to_i, bypass_trust_level_score: params[:bypass_trust_level_score].to_i, # safe cause 0 means ignore only_moderator_liked: params[:only_moderator_liked].to_s == "true" } @topic_view = TopicView.new(params[:topic_id], current_user, opts) discourse_expires_in 1.minute wordpress_serializer = TopicViewWordpressSerializer.new(@topic_view, scope: guardian, root: false) render_json_dump(wordpress_serializer) end def post_ids params.require(:topic_id) params.permit(:post_number, :username_filters, :filter) options = { filter_post_number: params[:post_number], filter: params[:filter], skip_limit: true, asc: true, skip_custom_fields: true } fetch_topic_view(options) render_json_dump(post_ids: @topic_view.posts.pluck(:id)) end def posts params.require(:topic_id) params.permit(:post_ids, :post_number, :username_filters, :filter, :include_suggested) include_suggested = params[:include_suggested] == "true" options = { filter_post_number: params[:post_number], post_ids: params[:post_ids], asc: ActiveRecord::Type::Boolean.new.deserialize(params[:asc]), filter: params[:filter], include_suggested: include_suggested, include_related: include_suggested, } fetch_topic_view(options) render_json_dump(TopicViewPostsSerializer.new(@topic_view, scope: guardian, root: false, include_raw: !!params[:include_raw] )) end def excerpts params.require(:topic_id) params.require(:post_ids) post_ids = params[:post_ids].map(&:to_i) unless Array === post_ids render_json_error("Expecting post_ids to contain a list of posts ids") return end if post_ids.length > 100 render_json_error("Requested a chunk that is too big") return end @topic = Topic.with_deleted.where(id: params[:topic_id]).first guardian.ensure_can_see!(@topic) @posts = Post.where(hidden: false, deleted_at: nil, topic_id: @topic.id) .where('posts.id in (?)', post_ids) .joins("LEFT JOIN users u on u.id = posts.user_id") .pluck(:id, :cooked, :username) .map do |post_id, cooked, username| { post_id: post_id, username: username, excerpt: PrettyText.excerpt(cooked, 800, keep_emoji_images: true) } end render json: @posts.to_json end def destroy_timings topic_id = params[:topic_id].to_i if params[:last].to_s == "1" PostTiming.destroy_last_for(current_user, topic_id) else PostTiming.destroy_for(current_user.id, [topic_id]) end last_notification = Notification .where( user_id: current_user.id, topic_id: topic_id ) .order(created_at: :desc) .limit(1) .first if last_notification last_notification.update!(read: false) end render body: nil end def update_shared_draft topic = Topic.find_by(id: params[:id]) guardian.ensure_can_edit!(topic) category = Category.where(id: params[:category_id].to_i).first guardian.ensure_can_publish_topic!(topic, category) row_count = SharedDraft.where(topic_id: topic.id).update_all(category_id: category.id) if row_count == 0 SharedDraft.create(topic_id: topic.id, category_id: category.id) end render json: success_json end def update topic = Topic.find_by(id: params[:topic_id]) guardian.ensure_can_edit!(topic) if params[:category_id] && (params[:category_id].to_i != topic.category_id.to_i) category = Category.find_by(id: params[:category_id]) if category || (params[:category_id].to_i == 0) guardian.ensure_can_move_topic_to_category!(category) else return render_json_error(I18n.t('category.errors.not_found')) end if category && topic_tags = (params[:tags] || topic.tags.pluck(:name)) category_tags = category.tags.pluck(:name) category_tag_groups = category.tag_groups.joins(:tags).pluck("tags.name") allowed_tags = (category_tags + category_tag_groups).uniq if topic_tags.present? && allowed_tags.present? invalid_tags = topic_tags - allowed_tags if !invalid_tags.empty? return render_json_error(I18n.t('category.errors.disallowed_topic_tags', tags: invalid_tags.join(", "))) end end end end changes = {} PostRevisor.tracked_topic_fields.each_key do |f| changes[f] = params[f] if params.has_key?(f) end changes.delete(:title) if topic.title == changes[:title] changes.delete(:category_id) if topic.category_id.to_i == changes[:category_id].to_i success = true if changes.length > 0 first_post = topic.ordered_posts.first success = PostRevisor.new(first_post, topic).revise!(current_user, changes, validate_post: false) end # this is used to return the title to the client as it may have been changed by "TextCleaner" success ? render_serialized(topic, BasicTopicSerializer) : render_json_error(topic) end def feature_stats params.require(:category_id) category_id = params[:category_id].to_i visible_topics = Topic.listable_topics.visible render json: { pinned_in_category_count: visible_topics.where(category_id: category_id).where(pinned_globally: false).where.not(pinned_at: nil).count, pinned_globally_count: visible_topics.where(pinned_globally: true).where.not(pinned_at: nil).count, banner_count: Topic.listable_topics.where(archetype: Archetype.banner).count, } end def status params.require(:status) params.require(:enabled) params.permit(:until) status = params[:status] topic_id = params[:topic_id].to_i enabled = params[:enabled] == 'true' check_for_status_presence(:status, status) @topic = Topic.find_by(id: topic_id) guardian.ensure_can_moderate!(@topic) @topic.update_status(status, enabled, current_user, until: params[:until]) render json: success_json.merge!( topic_status_update: TopicTimerSerializer.new( TopicTimer.find_by(topic: @topic), root: false ) ) end def mute toggle_mute end def unmute toggle_mute end def timer params.permit(:time, :based_on_last_post, :category_id) params.require(:status_type) status_type = begin TopicTimer.types.fetch(params[:status_type].to_sym) rescue invalid_param(:status_type) end topic = Topic.find_by(id: params[:topic_id]) guardian.ensure_can_moderate!(topic) options = { by_user: current_user, based_on_last_post: params[:based_on_last_post] } options.merge!(category_id: params[:category_id]) if !params[:category_id].blank? topic_status_update = topic.set_or_create_timer( status_type, params[:time], options ) if topic.save render json: success_json.merge!( execute_at: topic_status_update&.execute_at, duration: topic_status_update&.duration, based_on_last_post: topic_status_update&.based_on_last_post, closed: topic.closed, category_id: topic_status_update&.category_id ) else render_json_error(topic) end end def make_banner topic = Topic.find_by(id: params[:topic_id].to_i) guardian.ensure_can_banner_topic!(topic) topic.make_banner!(current_user) render body: nil end def remove_banner topic = Topic.find_by(id: params[:topic_id].to_i) guardian.ensure_can_banner_topic!(topic) topic.remove_banner!(current_user) render body: nil end def remove_bookmarks topic = Topic.find(params[:topic_id].to_i) PostAction.joins(:post) .where(user_id: current_user.id) .where('topic_id = ?', topic.id).each do |pa| PostActionDestroyer.destroy(current_user, pa.post, :bookmark) end render body: nil end def archive_message toggle_archive_message(true) end def move_to_inbox toggle_archive_message(false) end def toggle_archive_message(archive) topic = Topic.find(params[:id].to_i) group_id = nil group_ids = current_user.groups.pluck(:id) if group_ids.present? allowed_groups = topic.allowed_groups .where('topic_allowed_groups.group_id IN (?)', group_ids).pluck(:id) allowed_groups.each do |id| if archive GroupArchivedMessage.archive!(id, topic) group_id = id else GroupArchivedMessage.move_to_inbox!(id, topic) end end end if topic.allowed_users.include?(current_user) if archive UserArchivedMessage.archive!(current_user.id, topic) else UserArchivedMessage.move_to_inbox!(current_user.id, topic) end end if group_id name = Group.find_by(id: group_id).try(:name) render_json_dump(group_name: name) else render body: nil end end def bookmark topic = Topic.find(params[:topic_id].to_i) first_post = topic.ordered_posts.first result = PostActionCreator.create(current_user, first_post, :bookmark) return render_json_error(result) if result.failed? render body: nil end def destroy topic = Topic.find_by(id: params[:id]) guardian.ensure_can_delete!(topic) first_post = topic.ordered_posts.first PostDestroyer.new(current_user, first_post, context: params[:context]).destroy render body: nil end def recover topic = Topic.where(id: params[:topic_id]).with_deleted.first guardian.ensure_can_recover_topic!(topic) first_post = topic.posts.with_deleted.order(:post_number).first PostDestroyer.new(current_user, first_post, context: params[:context]).recover render body: nil end def excerpt render body: nil end def remove_allowed_user params.require(:username) topic = Topic.find_by(id: params[:topic_id]) raise Discourse::NotFound unless topic user = User.find_by(username: params[:username]) raise Discourse::NotFound unless user guardian.ensure_can_remove_allowed_users!(topic, user) if topic.remove_allowed_user(current_user, user) render json: success_json else render json: failed_json, status: 422 end end def remove_allowed_group params.require(:name) topic = Topic.find_by(id: params[:topic_id]) guardian.ensure_can_remove_allowed_users!(topic) if topic.remove_allowed_group(current_user, params[:name]) render json: success_json else render json: failed_json, status: 422 end end def invite_group group = Group.find_by(name: params[:group]) raise Discourse::NotFound unless group topic = Topic.find_by(id: params[:topic_id]) unless pm_has_slots?(topic) return render_json_error(I18n.t("pm_reached_recipients_limit", recipients_limit: SiteSetting.max_allowed_message_recipients )) end if topic.private_message? guardian.ensure_can_invite_group_to_private_message!(group, topic) topic.invite_group(current_user, group) render_json_dump BasicGroupSerializer.new(group, scope: guardian, root: 'group') else render json: failed_json, status: 422 end end def invite topic = Topic.find_by(id: params[:topic_id]) raise Discourse::InvalidParameters.new unless topic username_or_email = params[:user] ? fetch_username : fetch_email groups = Group.lookup_groups( group_ids: params[:group_ids], group_names: params[:group_names] ) unless pm_has_slots?(topic) return render_json_error(I18n.t("pm_reached_recipients_limit", recipients_limit: SiteSetting.max_allowed_message_recipients )) end guardian.ensure_can_invite_to!(topic) group_ids = groups.map(&:id) begin if topic.invite(current_user, username_or_email, group_ids, params[:custom_message]) user = User.find_by_username_or_email(username_or_email) if user render_json_dump BasicUserSerializer.new(user, scope: guardian, root: 'user') else render json: success_json end else json = failed_json unless topic.private_message? group_names = topic.category .visible_group_names(current_user) .where(automatic: false) .pluck(:name) .join(", ") if group_names.present? json.merge!(errors: [ I18n.t("topic_invite.failed_to_invite", group_names: group_names ) ]) end end render json: json, status: 422 end rescue Topic::UserExists => e render json: { errors: [e.message] }, status: 422 end end def set_notifications topic = Topic.find(params[:topic_id].to_i) TopicUser.change(current_user, topic.id, notification_level: params[:notification_level].to_i) render json: success_json end def merge_topic topic_id = params.require(:topic_id) destination_topic_id = params.require(:destination_topic_id) params.permit(:participants) params.permit(:archetype) raise Discourse::InvalidAccess if params[:archetype] == "private_message" && !guardian.is_staff? topic = Topic.find_by(id: topic_id) guardian.ensure_can_move_posts!(topic) args = {} args[:destination_topic_id] = destination_topic_id.to_i if params[:archetype].present? args[:archetype] = params[:archetype] args[:participants] = params[:participants] if params[:participants].present? && params[:archetype] == "private_message" end destination_topic = topic.move_posts(current_user, topic.posts.pluck(:id), args) render_topic_changes(destination_topic) end def move_posts post_ids = params.require(:post_ids) topic_id = params.require(:topic_id) params.permit(:category_id) params.permit(:tags) params.permit(:participants) params.permit(:archetype) raise Discourse::InvalidAccess if params[:archetype] == "private_message" && !guardian.is_staff? topic = Topic.with_deleted.find_by(id: topic_id) guardian.ensure_can_move_posts!(topic) # when creating a new topic, ensure the 1st post is a regular post if params[:title].present? && Post.where(topic: topic, id: post_ids).order(:post_number).pluck(:post_type).first != Post.types[:regular] return render_json_error("When moving posts to a new topic, the first post must be a regular post.") end destination_topic = move_posts_to_destination(topic) render_topic_changes(destination_topic) rescue ActiveRecord::RecordInvalid => ex render_json_error(ex) end def change_post_owners params.require(:post_ids) params.require(:topic_id) params.require(:username) guardian.ensure_can_change_post_owner! begin PostOwnerChanger.new(post_ids: params[:post_ids].to_a, topic_id: params[:topic_id].to_i, new_owner: User.find_by(username: params[:username]), acting_user: current_user).change_owner! render json: success_json rescue ArgumentError render json: failed_json, status: 422 end end def change_timestamps topic_id = params.require(:topic_id).to_i timestamp = params.require(:timestamp).to_f guardian.ensure_can_change_post_timestamps! topic = Topic.with_deleted.find(topic_id) previous_timestamp = topic.first_post.created_at begin TopicTimestampChanger.new( topic: topic, timestamp: timestamp ).change! StaffActionLogger.new(current_user).log_topic_timestamps_changed(topic, Time.zone.at(timestamp), previous_timestamp) render json: success_json rescue ActiveRecord::RecordInvalid, TopicTimestampChanger::InvalidTimestampError render json: failed_json, status: 422 end end def clear_pin topic = Topic.find_by(id: params[:topic_id].to_i) guardian.ensure_can_see!(topic) topic.clear_pin_for(current_user) render body: nil end def re_pin topic = Topic.find_by(id: params[:topic_id].to_i) guardian.ensure_can_see!(topic) topic.re_pin_for(current_user) render body: nil end def timings allowed_params = topic_params topic_id = allowed_params[:topic_id].to_i topic_time = allowed_params[:topic_time].to_i timings = allowed_params[:timings].to_h || {} # ensure we capture current user for the block user = current_user hijack do PostTiming.process_timings( user, topic_id, topic_time, timings.map { |post_number, t| [post_number.to_i, t.to_i] }, mobile: view_context.mobile_view? ) render body: nil end end def feed @topic_view = TopicView.new(params[:topic_id]) discourse_expires_in 1.minute render 'topics/show', formats: [:rss] end def bulk if params[:topic_ids].present? topic_ids = params[:topic_ids].map { |t| t.to_i } elsif params[:filter] == 'unread' tq = TopicQuery.new(current_user) topics = TopicQuery.unread_filter(tq.joined_topic_user, current_user.id, staff: guardian.is_staff?).listable_topics topics = topics.where('category_id = ?', params[:category_id]) if params[:category_id] topic_ids = topics.pluck(:id) else raise ActionController::ParameterMissing.new(:topic_ids) end operation = params .require(:operation) .permit(:type, :group, :category_id, :notification_level_id, tags: []) .to_h.symbolize_keys raise ActionController::ParameterMissing.new(:operation_type) if operation[:type].blank? operator = TopicsBulkAction.new(current_user, topic_ids, operation, group: operation[:group]) changed_topic_ids = operator.perform! render_json_dump topic_ids: changed_topic_ids end def reset_new current_user.user_stat.update_column(:new_since, Time.now) render body: nil end def convert_topic params.require(:id) params.require(:type) topic = Topic.find_by(id: params[:id]) guardian.ensure_can_convert_topic!(topic) if params[:type] == "public" converted_topic = topic.convert_to_public_topic(current_user) else converted_topic = topic.convert_to_private_message(current_user) end render_topic_changes(converted_topic) rescue ActiveRecord::RecordInvalid => ex render_json_error(ex) end def reset_bump_date params.require(:id) guardian.ensure_can_update_bumped_at! topic = Topic.find_by(id: params[:id]) raise Discourse::NotFound.new unless topic topic.reset_bumped_at render body: nil end private def topic_params params.permit( :topic_id, :topic_time, timings: {} ) end def fetch_topic_view(options) if (username_filters = params[:username_filters]).present? options[:username_filters] = username_filters.split(',') end @topic_view = TopicView.new(params[:topic_id], current_user, options) end def toggle_mute @topic = Topic.find_by(id: params[:topic_id].to_i) guardian.ensure_can_see!(@topic) @topic.toggle_mute(current_user) render body: nil end def consider_user_for_promotion Promotion.new(current_user).review if current_user.present? end def slugs_do_not_match params[:slug] && @topic_view.topic.slug != params[:slug] end def redirect_to_correct_topic(topic, post_number = nil) url = topic.relative_url url << "/#{post_number}" if post_number.to_i > 0 url << ".json" if request.format.json? page = params[:page] url << "?page=#{page}" if page != 0 redirect_to url, status: 301 end def track_visit_to_topic topic_id = @topic_view.topic.id ip = request.remote_ip user_id = (current_user.id if current_user) track_visit = should_track_visit_to_topic? if !request.format.json? hash = { referer: request.referer || flash[:referer], host: request.host, current_user: current_user, topic_id: @topic_view.topic.id, post_number: @topic_view.current_post_number, username: request['u'], ip_address: request.remote_ip } # defer this way so we do not capture the whole controller # in the closure TopicsController.defer_add_incoming_link(hash) end TopicsController.defer_track_visit(topic_id, ip, user_id, track_visit) end def self.defer_track_visit(topic_id, ip, user_id, track_visit) Scheduler::Defer.later "Track Visit" do TopicViewItem.add(topic_id, ip, user_id) TopicUser.track_visit!(topic_id, user_id) if track_visit end end def self.defer_add_incoming_link(hash) Scheduler::Defer.later "Track Link" do IncomingLink.add(hash) end end def should_track_visit_to_topic? !!((!request.format.json? || params[:track_visit]) && current_user) end def perform_show_response if request.head? head :ok return end topic_view_serializer = TopicViewSerializer.new(@topic_view, scope: guardian, root: false, include_raw: !!params[:include_raw] ) respond_to do |format| format.html do @description_meta = @topic_view.topic.excerpt.present? ? @topic_view.topic.excerpt : @topic_view.summary store_preloaded("topic_#{@topic_view.topic.id}", MultiJson.dump(topic_view_serializer)) render :show end format.json do render_json_dump(topic_view_serializer) end end end def render_topic_changes(dest_topic) if dest_topic.present? render json: { success: true, url: dest_topic.relative_url } else render json: { success: false } end end def move_posts_to_destination(topic) args = {} args[:title] = params[:title] if params[:title].present? args[:destination_topic_id] = params[:destination_topic_id].to_i if params[:destination_topic_id].present? args[:tags] = params[:tags] if params[:tags].present? if params[:archetype].present? args[:archetype] = params[:archetype] args[:participants] = params[:participants] if params[:participants].present? && params[:archetype] == "private_message" else args[:category_id] = params[:category_id].to_i if params[:category_id].present? end topic.move_posts(current_user, post_ids_including_replies, args) end def check_for_status_presence(key, attr) invalid_param(key) unless %w(pinned pinned_globally visible closed archived).include?(attr) end def invalid_param(key) raise Discourse::InvalidParameters.new(key.to_sym) end def fetch_username params.require(:user) params[:user] end def fetch_email params.require(:email) params[:email] end def pm_has_slots?(pm) guardian.is_staff? || !pm.reached_recipients_limit? end end