public function down()
    {
        Schema::table('users', function ($table) {
            $table->string('name')->after('id');
            $table->dropColumn('picture');
            $table->dropColumn('lastname');
            $table->dropColumn('firstname');
            $table->dropForeign('users_role_id_foreign');
            $table->dropColumn('role_id');
        });
    }