具有动态约束的 Laravel Eager Load [英] Laravel Eager Load with dynamic constraints
问题描述
任何人都可以帮我理解为什么下面的代码有效
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时
$id='11';
$x = $widget->objGallery->galleryItems()->with(array('captions' => function($query){ $query->where('locale', $id );}))->get() ;
在说
方法 Illuminate\View\View::__toString() 不能抛出异常
Method Illuminate\View\View::__toString() must not throw an exception
推荐答案
其实不好说,因为你这里没有展示相关代码,但是代码有问题:
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
在这里未定义.你需要在闭包中添加 use
来使用 if,所以代码应该是这样的:
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();
您应该将您的环境更改为本地并打开调试,您可能会知道这个问题.可能在我向您展示的更正此代码时不会出现错误.
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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