php - 在 laravel blade 中创建一个动态表

Question

我在动态创建表时遇到问题。

基本上我是通过以下语句从数据库中获取数据:

$data = User::all();

之后，我通过以下语句获取了数据库表的属性名称:

$columns = DB::getSchemaBuilder()->getColumnListing('users');  

之后 $data 和 $columns通过以下语句发送到 View :

return view('framework/list', compact('data', 'columns'));

在我看来，即 list.blade.php 两个 foreach 循环用于创建 <tr>和 <td>就像这样:

@foreach($data as $singleUser)
<tr>
    @foreach($columns as $cols)
    <td>

        {{$singleUser->$cols}}
        {{Blade::compileString('"'.'$singleUser->'."$cols".'"')}}
                                     
    </td>
    @endforeach
</tr>
@endforeach

但我得到一个异常，而不是打印值(两个语句用于打印值但它们都给出相同的异常)

(3/3) ErrorException

Trying to get property of non-object (View: /home/srmd/biniHR/resources/views/layouts/key.blade.php) (View: /home/srmd/resources/views/layouts/key.blade.php)

Answer 1

对于动态调用，您必须使用:{{$singleUser->{$cols}}}

This "enclose with braces" trick is useful in PHP whenever there is ambiguity due to variable variables.

How do I dynamically write a PHP object property name?

您可以将用户对象转换为数组并对其进行迭代，而不是获取数据库值:

@foreach($data as $singleUser)
<tr>
    @foreach($singleUser->toArray() as $key => $value)
    <td>
        Key {{ $key }}
        Value {{ $value }}
        Value {{ $singleUser->toArray()[$key] }} //equal to first try
        Value {{ $singleUser->{$key} }} // not sure if it works, but it should
    </td>
    @endforeach
</tr>
@endforeach