laravel 如何在blade.php中获取输入值
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How to get value of input in blade.php
提问by xamarinDev
I need to get a value of input to use below, how to do that? I tried to like this but error says
我需要获得一个输入值以在下面使用，该怎么做？我试图喜欢这个但错误说
Undefined variable: name
未定义变量：名称
<div class="col-md-10 col-md-offset-1">
<input id="name" type="text" name="name" />
</div>
<div class="col-md-10 col-md-offset-1">
@php
$nameValue=$_GET['name'];
@endphp
<input id="name2" type="text" name="name2" value="{{$nameValue}}" />
</div>
回答by Brotzka
You have to be aware that your input-values (here "name") ist only available after submitting the form.
您必须注意，您的输入值（此处为“名称”）仅在提交表单后才可用。
If you want to access the form-values before submitting you should take a look at VueJS or any other frontend-framework (React, Angular). Or simply use jQuery.
如果您想在提交之前访问表单值，您应该查看 VueJS 或任何其他前端框架（React、Angular）。或者干脆使用jQuery。
Therefor you have to use JavaScript if you want to use the input-value before submitting.
因此，如果您想在提交前使用输入值，则必须使用 JavaScript。
Like the others said in the comments, you can access your form-values within your controller and then pass it to your view.
就像评论中的其他人所说的那样，您可以在控制器中访问表单值，然后将其传递给您的视图。
For example (from the documentation):
例如（来自文档）：
namespace App\Http\Controllers;
use Illuminate\Http\Request;
class UserController extends Controller
{
public function formSubmit(Request $request)
{
$name = $request->input('name');
return view('form', ['name' => $name])
}
}
Now you can use the value within your view:
现在您可以在视图中使用该值：
<input id="name2" type="text" name="name2" value="{{$name}}">
Another possibility would be to "by-pass" your controller and return your view directly from your routes.php:
另一种可能性是“绕过”您的控制器并直接从您的 routes.php 返回您的视图：
Route::get('/form-submit', function(){
return view('form');
});
But I'm not sure if this is working and you could access $_GET/$_PSOT directly without using Laravels Request.
但我不确定这是否有效，您可以直接访问 $_GET/$_PSOT 而不使用 Laravel 请求。
回答by Luca C.
$nameValue=Request::input('name')
From the blade template you can access the request parameters with the Requestfacade, you can also print it directly:
从刀片模板中，您可以访问带有Request门面的请求参数，也可以直接打印它：
{{Request::input('name')}}
In latest versions you can also use:
在最新版本中，您还可以使用：
{{request()->input('name')}}
回答by Mahdi Khansari
You can get inputs array from Request class:
您可以从 Request 类获取输入数组：
Request::all()['your_input']
Also you can check if that input you want is exists not:
您也可以检查您想要的输入是否存在：
@isset(Request::all()['your_input'])
{{-- your input existed --}}
@else
{{-- your input does not existed --}}
@endisset
