create_migration_file

# File activerecord/lib/rails/generators/active_record/model/model_generator.rb, line 25
      def create_migration_file
        return if skip_migration_creation?
        attributes.each { |a| a.attr_options.delete(:index) if a.reference? && !a.has_index? } if options[:indexes] == false
        migration_template "create_table_migration.rb", File.join(db_migrate_path, "create_#{table_name}.rb")
      end