Laravel - 如何在刀片视图中尝试/捕获？
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Laravel - How to a try/catch in blade view?
提问by Wallace Maxters
I would like to create a way to compile in a view, the try/catch. How can I do this in Laravel?
我想创建一种在视图中编译的方法，即 try/catch。我怎样才能在 Laravel 中做到这一点？
Example:
例子：
@try
<div class="laravel test">
{{ $user->name }}
</div>
@catch(Exception $e)
{{ $e->getMessage() }}
@endtry
回答by Martin Bean
You should nothave try/catchblocks in your view. A view is exactly that: a representation of some data. That means you should not be doing any logic (such as exception handling). That belongs in the controller, once you've fetched data from model(s).
你应该不会有try/catch块你的看法。视图正是这样：一些数据的表示。这意味着您不应该执行任何逻辑（例如异常处理）。一旦您从模型中获取数据，它就属于控制器。
If you're just wanting to display a default value in case a variable is undefined, you can use a standard PHP null coalescing operatorto display a default value:
如果您只想在未定义变量的情况下显示默认值，您可以使用标准的PHP 空合并运算符来显示默认值：
{{ $user->name ?? 'Name not set' }}
回答by areed
You are probably doing something wrong if you need a try..catchin your view. But that does not mean you should never do it. There are exceptions to every rule.
如果您需要 atry..catch在您看来，您可能做错了什么。但这并不意味着你永远不应该这样做。每条规则都有例外。
So anyway, here is the answer:
所以无论如何，这是答案：
Put raw PHP in your view by using <?php ?>or @php @endphptags. Then put your try..catchin the raw PHP.
使用<?php ?>或@php @endphp标签将原始 PHP 放入您的视图中。然后把你try..catch的原始 PHP。
@php
try {
// Try something
} catch (\Exception $e) {
// Do something exceptional
}
@endphp
回答by Benjamin Ini
while i agree with @areed that something is wrong if you have to use a try...catch, there are weird cases where a wrong approach can lead you down that path. One instance is using the same blade to house a paginate()and a get()response. Well, this might help a little.
虽然我同意@areed 的观点，即如果您必须使用 try...catch，就会出现问题，但在某些奇怪的情况下，错误的方法可能会导致您走上这条道路。一个实例是使用相同的刀片来容纳一个paginate()和一个get()响应。嗯，这可能会有所帮助。
<?php try{ ?>
//try to show something
{{ $products->links() }}
<?php }catch(\Exception $e){ ?>
// show something else
<?php } ?>
