Laravel Blade模板尝试获取非对象的属性时如何返回null而不是ErrorException [英] Laravel Blade template how to return null instead of ErrorException when trying to get property of non-object

问题描述

我正在编写一些Laravel Blade模板，并且我的模型可能包含空对象.我非常想尝试获取对象属性，如果有错误，则返回null.

I'm writing some Laravel Blade templates, and I have models that may have null objects. I would very much like to just try and get the object property and if there is an error, just return null.

所以不必写这个:

@if ($model->child_object_that_may_be_null)
    {{ $model->child_object_that_may_be_null->interesting_property }}
@endif

我可以这样写:

{{ $model->child_object_that_may_be_null->interesting_property }}

，如果子对象为null，则结果为null.

and if the child object is null, then the result evaluates to null.

我只想使用刀片模板来执行此操作，而不是应用程序中的所有位置(例如，我仍然想在控制器中获取错误).

I want to only do this with my blade templates, and not everywhere in the application (I'd still like to get the error in the controllers for example).

有没有简单的方法可以做到这一点?我也确实不想每次都在刀片模板中尝试/捕获异常.

Is there an easy way to accomplish this? I also really don't want to have to try/catch the exception each time in the blade templates either.

基本上，当我不在乎我的孩子为null时，我试图使刀片模板的编写更容易/更简短，如果它为null，则对于渲染部分，不存在的属性也应该仅为null

Basically, I'm trying to make the blade templates easier/shorter to write when I don't care that I child is null, if it is null then its non-existent property should just be null also for the rendering portion.

推荐答案

您可以使用

You can use array_get as:

{{ array_get($model, 'child_object_that_may_be_null.interesting_property') }}

array_get函数使用点"符号从深度嵌套的数组中检索值.

The array_get function retrieves a value from a deeply nested array using "dot" notation.

注意-它只能与Laravel的模型对象一起使用

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