detailed_migration_message

# File activerecord/lib/active_record/migration.rb, line 151
      def detailed_migration_message
        message = "Migrations are pending. To resolve this issue, run:\n\n        bin/rails db:migrate"
        message += " RAILS_ENV=#{::Rails.env}" if defined?(Rails.env)
        message += "\n\n"

        pending_migrations = ActiveRecord::Base.connection.migration_context.open.pending_migrations

        message += "You have #{pending_migrations.size} pending #{pending_migrations.size > 1 ? 'migrations:' : 'migration:'}\n\n"

        pending_migrations.each do |pending_migration|
          message += "#{pending_migration.basename}\n"
        end

        message
      end