Question

我的数组

Array ( 
[1] => Array ( 
[username] => Test 
[description] => Hello
[country] => USA
[menu] => Array ( 
  [1] => Array ( 
    [id] => 1 
    [level] => 1 
    [level_2_categories] => Array (
          [level] => 2 
          [services] => Array (
              [1] ...
              [2] ...
              [3] ... )
  [2] => Array ( 
    [id] => 2 
    [level] => 1 
    [level_2_categories] => Array (
          [level] => 2  
          [services] => Array (
                      )
  [3] => Array ( 
    [id] => 3 
    [level] => 1 
    [level_2_categories] => Array ( 
          [level] => 2 
          [services] => Array (
              [1] ...
              [2] ...
              [3] ... )
  ) 
)

Laravel

@foreach ($professional->menu as $index => $menu)
  @foreach ($menu->level_2_categories as $category)
    @if (count($category->services)>0)
     <li>
       <a href="#{{ $menu->id}}" data-toggle="tab">
         <div class="category-box">
           <span class="arrow">{{ $menu->id }}</span>
         </div>
       </a>
     </li>
    @endif
  @endforeach
@endforeach

我正在尝试为每个菜单数组打印[id]，除了[services]中没有数组的菜单（菜单的第二个数组）。尝试上面的代码，但由于嵌套的@foreach，Laravel多次输出菜单ID。非常感谢任何帮助谢谢！

Answer 1

尝试维护count，如下面的代码所示：

@foreach ($professional->menu as $index => $menu)
    <?php $count=0;?> // change over here   
  @foreach ($menu->level_2_categories as $category)
    @if (count($category->services) > 0 && $count==0) // change over here
    <?php $count++; ?> // change over here
    <li>
      <a href="#{{ $menu->id}}" data-toggle="tab">
        <div class="category-box">
          <span class="arrow">{{ $menu->id }}</span>
        </div>
      </a>
    </li>
    @endif
  @endforeach
@endforeach

Answer 2

如果您使用的是Laravel版本＆gt;更新的答案5.3，您可以使用内置的$loop变量：

@foreach ($professional->menu as $index => $menu)
  @foreach ($menu->level_2_categories as $category)
    @if (count($category->services) > 0 && $loop->index == 0)
      <li>
        <a href="#{{ $menu->id}}" data-toggle="tab">
          <div class="category-box">
            <span class="arrow">{{ $menu->id }}</span>
          </div>
        </a>
      </li>
    @endif
  @endforeach
@endforeach

https://laravel.com/docs/5.5/blade#loops

Laravel Nested Foreach

2 个答案: