在Laravel中如何在特定字段旁边显示错误消息? [英] In Laravel how to show error message beside specific field?

问题描述

我是laravel的新手.我创建了一个简单的页面，用户可以在其中将产品添加到数据库中.如果产品标题或金额为空；我也可以显示错误.但是我想在特定字段旁边显示错误.如果标题为空，则错误将显示在标题字段旁边. 我搜索并找到了使用JS和其他方法的解决方案.但是有没有办法仅使用laravel来实现呢?

I am new to laravel. I created a simple page where a user can add a product to the database. If the product title or amount is empty; I can also show the errors. But I want to show error right beside the specific field. If the title is empty the error will show beside the title field. I searched and found solutions using JS and some other. But is there a way to achieve this using only laravel?

我的看法是这样

<form method="POST" action="create">
    @csrf
    <input type="text" name="title" placeholder="Product name"><br>
    <textarea name="description" placeholder="Description"></textarea><br>
    <input type="string" name="amount" placeholder="Price per unit"><br>
    <button type="submit">Add Product</button>
</form>
@if(count($errors))
    <ul>
        @foreach($errors->all() as $error)
            <li>{{ $error }}</li>
            @endforeach
    </ul>
@endif

我的控制器就是这样

public function store()
{   

    $this->validate(request(),[
        'title'=> 'required',
        'amount' => 'required',
    ]);

    $product = new Product;
    $product->title = request('title');
    $product->seller_id =  Auth::guard('seller')->user()->id;
    $product->description = request('description');
    $product->amount = request('amount');

    $product->save();
    return redirect('/dashboard');
}

推荐答案

您需要检查错误并在需要的地方显示，如下所示

You need to check for errors and display wherever you want like given below

@if ($errors->has('title')) <p style="color:red;">{{ $errors->first('title') }}</p> @endif

和

@if ($errors->has('amount')) <p style="color:red;">{{ $errors->first('amount') }}</p> @endif

在您要查看的代码中，可以将其放置为

In your code for view it can be placed as

    <form method="POST" action="create">
        @csrf
        <input type="text" name="title" placeholder="Product name">
         @if ($errors->has('title')) <p style="color:red;">{{ $errors->first('title') }}</p> @endif <br>
        <textarea name="description" placeholder="Description"></textarea><br>
        <input type="string" name="amount" placeholder="Price per unit">
        @if ($errors->has('amount')) <p style="color:red;">{{ $errors->first('amount') }}</p> @endif <br>
        <button type="submit">Add Product</button>
    </form>

此外，您还可以通过如下所示从控制器返回错误文本来打印自定义消息

Additionally you can also print custom messages by returning the error text from controller as shown below

$customMessages = [
  'title.required'  => 'The title field is required to be filled',
  'amount.required' => 'The amount field should be completely filled'
];
$this->validate(request,[
        'title'=> 'required',
        'amount' => 'required',
    ], $customMessages);

相反，如果要显示某个字段的所有错误，可以按如下所示打印它们

Instead, if you want to show all the errors for a field you can print them as follows

@if ($errors->has('title')) 
   <p style="color:red;">
    @foreach ($errors->get('title') as $errormessage) 
      {{ $errormessage }}<br>
    @endforeach
   </p> 
@endif

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