This class is used to verify that all migrations have been run before loading a web page if config.active_record.migration_error is set to :page_load

Methods

Class Public methods

new(app)

📝 Source code 
# File activerecord/lib/active_record/migration.rb, line 548
      def initialize(app)
        @app = app
        @last_check = 0
      end
🔎 See on GitHub

Instance Public methods

call(env)

📝 Source code 
# File activerecord/lib/active_record/migration.rb, line 553
      def call(env)
        mtime = ActiveRecord::Base.connection.migration_context.last_migration.mtime.to_i
        if @last_check < mtime
          ActiveRecord::Migration.check_pending!(connection)
          @last_check = mtime
        end
        @app.call(env)
      end
🔎 See on GitHub