class IncomingLink < ActiveRecord::Base belongs_to :topic belongs_to :user validates :url, presence: true validate :referer_valid before_validation :extract_domain before_validation :extract_topic_and_post after_create :update_link_counts def self.add(request,current_user=nil) user_id, host, referer = nil if request['u'] u = User.select(:id).where(username_lower: request['u'].downcase).first user_id = u.id if u end if request.referer.present? host = URI.parse(request.referer).host referer = request.referer[0..999] end if host != request.host && (user_id || referer) cid = current_user.id if current_user unless cid && cid == user_id IncomingLink.create(url: request.url, referer: referer, user_id: user_id, current_user_id: cid, ip_address: request.remote_ip) end end end # Internal: Extract the domain from link. def extract_domain if referer.present? self.domain = URI.parse(self.referer).host self.referer = nil unless self.domain end end # Internal: If link is internal and points to topic/post, extract their IDs. def extract_topic_and_post if url.present? parsed = URI.parse(url) begin # TODO achieve same thing with no exception params = Rails.application.routes.recognize_path(parsed.path) if self.topic_id = params[:topic_id] self.post_number = params[:post_number] || 1 end rescue ActionController::RoutingError # If we can't route to the url, that's OK. Don't save those two fields. end end end # Internal: Update appropriate link counts. def update_link_counts if topic_id.present? exec_sql("UPDATE topics SET incoming_link_count = incoming_link_count + 1 WHERE id = ?", topic_id) if post_number.present? exec_sql("UPDATE posts SET incoming_link_count = incoming_link_count + 1 WHERE topic_id = ? and post_number = ?", topic_id, post_number) end end end protected def referer_valid return true unless referer if (referer.length < 3 || referer.length > 100) || (domain.length < 1 || domain.length > 100) # internal, no need to localize errors.add(:referer, 'referer is invalid') false else true end end end # == Schema Information # # Table name: incoming_links # # id :integer not null, primary key # url :string(1000) not null # referer :string(1000) # domain :string(100) # topic_id :integer # post_number :integer # created_at :datetime not null # updated_at :datetime not null # user_id :integer # ip_address :string # current_user_id :integer # # Indexes # # incoming_index (topic_id,post_number) # index_incoming_links_on_created_at_and_domain (created_at,domain) # index_incoming_links_on_created_at_and_user_id (created_at,user_id) #