检查laravel blade文件中的变量是否为空

你可以简单地做 {{ $material_details ?? 'second value' }} . 读取Elvis和Null合并运算符。

链接:

猫王: https://en.wikipedia.org/wiki/Elvis_operator

空合并运算符: https://en.wikipedia.org/wiki/Null_coalescing_operator

试试下面的代码。

@if(is_null($material_details))
    // whatever you need to do here
@else 

您的代码只会在变量保持某个值时打印数据。

尝试以下方法:

@if(isset($material_details->pricing))
 <tr>
   <td>price is not null</td>
 </tr>

@else
 <tr>
   <td>null</td>
 </tr>

@endif

试试这个

@if(isset($material_details->pricing))
 <tr>
   <td>NOT NULL</td>
 </tr>
@else
 <tr>
   <td>NULL</td>
 </tr>
@endif

@if(empty($material_details->pricing))
 <tr>
   <td>NULL</td>
 </tr>
@else
 <tr>
   <td>NOT NULL</td>
 </tr>
@endif

您可以使用如下所示的laravel三元运算符

{!! !empty($material_details->pricing) ? '<tr><td>price is not null</td></tr>' : '<tr><td>Empty</td</tr>' !!}

请试试这个

@if($material_details->pricing != null)
   <tr>
     <td>price is not null</td>
   </tr>
@endif

If are able to access your variable through {{ $material_details['pricing'] }} inside your blade file, 

然后检查并附加值:

{{ ($material_details['pricing'] == "null") ? "null value" : $material_details['pricing'] }}

要检查和附加元素:

@if($material_details['pricing'] != "null")
  <tr>
   <td>price is not null</td>
 </tr>
 @endif

你可以简单地使用拉威尔 isEmpty() 用链子把你的收藏品绑起来。

@if($data->quotes->isEmpty()) 
  //Empty
@else
// Not Empty
@endif

更多信息请登录Laravel API网站 here .

@isset($records)
    // $records is defined and is not null...
@endisset

@empty($records)
    // $records is "empty"...
@endempty