integer('user_id')->unsigned(); $table->integer('group_id')->unsigned(); // We'll need to ensure that MySQL uses the InnoDB engine to // support the indexes, other engines aren't affected. $table->engine = 'InnoDB'; $table->primary(['user_id', 'group_id']); }); } /** * Reverse the migrations. * * @return void */ public function down() { Schema::drop('users_groups'); } }