Question

也许它看起来很基本，我忘记或遗失了什么？当我这样做时

class DefaultController extends Controller
{
    public $mSelectedDepartment =0;
   public  $mDepartment;


    /**
     * @Route("/", name="homepage")
     */
    public function indexAction(Request $request)
    {

        $mSelectedDepartment=$this->getSelectedDepartment();
         $departments=$this->getDoctrine()->getRepository('AppBundle:departments')->findAll();


        //create department links
        for($i=0;$i<count($departments);$i++)
        {
            //generate simple link exp 'index?DepartmentId/1 '
          $this->mDepartment[$i]['link_to_department']='index/DepartmentId/=';  // my point is to fench [department_id]


        }
        // replace this example code with whatever you need
        return $this->render('index/index.html.twig', [ 'department'=>$departments,'selectedDepartment'=>$mSelectedDepartment
        ]);


    }

  function getSelectedDepartment()
  {
      return $this->mSelectedDepartment;
  }




}

然后转储变量dump($departments[$i])，它显示我

 departments {#528 ▼
  -department_id: 1
  -name: "Regional"
  -discription: "Proud of your country? Wear a T-shirt with a national symbol stamp!"
}

在DefaultController.php第31行：

departments {#526 ▼
  -department_id: 2
  -name: "Nature"
  -discription: "Find beautiful T-shirts with animals and flowers in our Nature department!"
}

在DefaultController.php第31行：

departments {#525 ▼
  -department_id: 3
  -name: "Seasonal"
  -discription: "Each time of the year has a special flavor. Our seasonal T-shirts express traditional symbols using unique postal stamp pictures."
}

所以我认为它是阵列。但是为什么当我尝试访问

时

dump($departments[$i]['department_id ']);

它说：

不能使用类型部门的对象作为数组

Answer 1

你有一个对象，而不是一个数组，所以你必须做这样的事情

foreach ($departments as $department){
$my_department=(array) $department;
print_r($my_department);
}

Answer 2

感谢继续尝试后我意识到部门_id属性是私有的，所以我改为公开

数组（[0] =＆gt; AppBundle \ Entity \ departments对象（ [department_id：AppBundle \ Entity \ departments：private] =＆gt; 1 [name：AppBundle \ Entity \ departments：private] =＆gt;区域性 [描述：AppBundle \ Entity \ departments：private] =＆gt;为你的骄傲国家？穿上带有国家象征印章的T恤！）[1] =＆gt; AppBundle \ Entity \ departments对象（ [department_id：AppBundle \ Entity \ departments：private] =＆gt; 2 [name：AppBundle \ Entity \ departments：private] =＆gt;性质 [描述：AppBundle \ Entity \ departments：private] =＆gt;找到美丽我们自然部门的动物和鲜花T恤！）[2] =＆gt; AppBundle \ Entity \ departments对象（ [department_id：AppBundle \ Entity \ departments：private] =＆gt; 3 [name：AppBundle \ Entity \ departments：private] =＆gt;时令的 [描述：AppBundle \ Entity \ departments：private] =＆gt;每一次一年有一种特殊的味道。我们的季节性T恤表达传统使用独特的邮政邮票图片的符号。））

按照我想要的方式修复

   //generate simple link exp 'index?DepartmentId/1 '
          $this->mDepartment[$i]['link_to_department']='index/DepartmentId/'.$departments[$i]->department_id;

现在新的问题是保存在实体上使用公共属性之前的类属性感谢支持者

    array:1 [▼
  0 => array:1 [▼
    "link_to_department" => "index/DepartmentId/1"
  ]
]
In DefaultController.php line 32:
array:2 [▼
  0 => array:1 [▼
    "link_to_department" => "index/DepartmentId/1"
  ]
  1 => array:1 [▼
    "link_to_department" => "index/DepartmentId/2"
  ]
]
In DefaultController.php line 32:
array:3 [▼
  0 => array:1 [▼
    "link_to_department" => "index/DepartmentId/1"
  ]
  1 => array:1 [▼
    "link_to_department" => "index/DepartmentId/2"
  ]
  2 => array:1 [▼
    "link_to_department" => "index/DepartmentId/3"

不能使用AppBundle \ Entity \ foo类型的对象作为数组

2 个答案: