CreateMenuTable::up PHP Method

    public function up()
    {
        Schema::create('menus', function ($table) {
            $table->increments('id');
            $table->string('name');
            $table->string('label');
            $table->unsignedInteger('position')->default(0);
            $table->string('icon')->nullable();
            $table->boolean('separator')->default(false);
            $table->string('url')->nullable()->default(null);
            $table->boolean('enabled')->default(false);
            $table->unsignedInteger('parent_id')->default(0);
            $table->unsignedInteger('route_id')->nullable()->default(null);
            $table->unsignedInteger('permission_id')->nullable()->default(null);
            $table->timestamps();
            //            $table->foreign('parent_id')->references('id')->on('menus');
            //            $table->foreign('route_id')->references('id')->on('routes');
            //            $table->foreign('permission_id')->references('id')->on('permissions');
        });
    }