Laravel Eager加载动态约束 [英] Laravel Eager Load with dynamic constraints

问题描述

任何人都请帮我明白为什么下面的代码是工作的

Can anybody please help me to understand why the following code is working

$x = $widget->objGallery->galleryItems()->with(array('captions' => function($query){ $query->where('locale', 'IT' );}))->get() ;

但是当我使用动态值

$id='11';
$x = $widget->objGallery->galleryItems()->with(array('captions' => function($query){ $query->where('locale', $id );}))->get() ;

表示

方法Illuminate\View\View :: __ toString（）不得抛出异常

Method Illuminate\View\View::__toString() must not throw an exception

推荐答案

事实上很难说，因为你没有在这里展示相关代码，但是代码的问题：

In fact it's hard to say because you haven't showed here relevant code, but the problem with code:

$x = $widget->objGallery->galleryItems()->with(array('captions' => 
      function($query){ $query->where('locale', $id );
     }))->get();

是变量 $ id 未定义。您需要添加使用才能在关闭时使用，因此代码应如下所示：

is that variable $id is undefined here. You need to add use to use if in closure, so the code should look like this:

$x = $widget->objGallery->galleryItems()->with(array('captions' => 
      function($query) use($id) { $query->where('locale', $id );
     }))->get();

您应该将环境更改为本地并打开调试，可能您会知道这个问题。可能是纠正这段代码时，我显示你不会有错误。

You should change your environment to local and have turned on debugging, probably you would then know about this problem. Probably when correcting this code as I showed you won't have the error.

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