非法字符串偏移并尝试获取 non-object 的 属性 (laravel 5.3)

Question

所以我无法在 blade 中打印数据来自控制器的结果，所以：

1. UseController.php :

        $expertCategory = Category::getCategoryByID($user_id);
        $data = [ 'expertCategory' => $expertCategory ];
        return view('cms.user.edit', $data);
   

2. Category.php (models) getCategoryByID($user_id) return 结果数组 if i dd(expertCategory);在控制器中，结果是：

   array:9 [▼
      "id" => 1
      "name" => "Beauty"
      "sequence" => 1
      "background_color" => "ffffff"
      "status" => "Active"
      "created_at" => "2017-06-19 09:41:38"
      "updated_at" => "2017-06-19 09:41:38"
      "icon_filename" => "beauty-icon"
      "iconURL" => array:3 [▼
               "small" => "http://localhost:8000/images/category_icons/small/beauty-icon"
              "medium" => "http://localhost:8000/images/category_icons/medium/beauty-icon"
        ]
   ]
   

3. 但是当我想使用 foreach 打印 blade.php 中的结果时，代码为：

    @foreach($expertCategory as $expertCat)
      {{ $expertCat->id }}
    @endforeach
   

会return错误"Trying to get property of non-object "

如果我使用这样的代码：

@foreach($expertCategory as $expertCat) {{ $expertCat['id'] }} @endforeach

会 return : "Illegal string offset 'id'"

任何人都可以帮助解决这个问题：s？非常感谢！

Answer 1

因为 $expertCategory 是一个 dimensional array 你正面临这个问题

只需替换这个

$expertCategory = Category::getCategoryByID($user_id);
$data = [ 'expertCategory' => $expertCategory ];
return view('cms.user.edit', $data);

有

$expertCategory = Category::getCategoryByID($user_id);
$data = [ 'expertCategory' => [$expertCategory] ];
return view('cms.user.edit', $data);

然后使用

@foreach($expertCategory as $expertCat)
  {{ $expertCat['id'] }}
@endforeach

在你的 blade 中它会为你工作。