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stream_item_instance.rb
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# frozen_string_literal: true # # Copyright (C) 2011 - present Instructure, Inc. # # This file is part of Canvas. # # Canvas is free software: you can redistribute it and/or modify it under # the terms of the GNU Affero General Public License as published by the Free # Software Foundation, version 3 of the License. # # Canvas is distributed in the hope that it will be useful, but WITHOUT ANY # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR # A PARTICULAR PURPOSE. See the GNU Affero General Public License for more # details. # # You should have received a copy of the GNU Affero General Public License along # with this program. If not, see <http://www.gnu.org/licenses/>. # class StreamItemInstance < ActiveRecord::Base include Workflow belongs_to :user belongs_to :stream_item belongs_to :context, polymorphic: %i[course account group assignment_override] validates :stream_item_id, :user_id, :context_id, :context_type, presence: true before_save :set_context_code def set_context_code self.context_type ||= stream_item.context_type self.context_id ||= stream_item.context_id end class << self # Don't use update_all() because there is an observer # on StreamItemInstance to invalidate some cache keys. # Use update_all_with_invalidation() instead. def update_all(*) raise "Using update_all will break things, use update_all_with_invalidation instead." end # Runs update_all() and also invalidates cache keys for the array of contexts (a context # is an array of [context_type, context_id]) def update_all_with_invalidation(contexts, updates) contexts.each { |context| StreamItemCache.invalidate_context_stream_item_key(context.first, context.last) } in_batches(of: 10_000).update_all(updates) end end workflow do state :read state :unread end end