php 在 Laravel 中与 Blade 连接
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Concatenation with Blade in Laravel
提问by Ashley Brown
I'm trying to access a table column in my ItemController. In this instance, I wish to use the values in my array + a concatenated string to for the column name.
我正在尝试访问 ItemController 中的表列。在这种情况下，我希望使用数组中的值 + 连接字符串作为列名。
ItemController.php ....
ItemController.php ....
public function displayItems() {
$itemsList = array('Alpha','Bravo','Charlie','Delta');
//$results = returned mysql row here
return view('items', ['rs' => $results, 'items' => $itemsList]);
}
page.blade.php
页面.blade.php
@foreach ($items as $item)
//$item is used elsewhere too, so keep $item
{{$rs->$item.'_data'}}
@endforeach
Desired output:
期望的输出：
$rs->Alpha_data;
$rs->Delta_data;
etc
How can I dynamically set a variable for $rs->name?
如何为 $rs-> name动态设置变量？
回答by Alexey Mezenin
Try to do this:
尝试这样做：
{{ $rs->${$item.'_data'} }}
回答by Bruce Tong
lets say you are retrieving a single record 'task', and this record has variables called 'var1','var2','var3' ... all the way to 'var16'.
假设您正在检索单个记录“任务”，并且该记录具有名为“var1”、“var2”、“var3”……一直到“var16”的变量。
you can echo those variables in your blade file like so:
您可以像这样在刀片文件中回显这些变量：
@for($y=1; $y<=16; $y++)
{{ $task->{'var'.$y} }}
@endfor
回答by Guest-Baby
Quite simple, just use the . sign for concats in PHP
很简单，只要使用 . 在 PHP 中为 concats 签名
