validation error in laravel code example

Example 1: how to show validation error in laravel blade

@if($errors->any())
    <div class="alert alert-danger">
        <p><strong>Opps Something went wrong</strong></p>
        <ul>
        @foreach ($errors->all() as $error)
            <li>{{ $error }}</li>
        @endforeach
        </ul>
    </div>
@endif

@if(session('success'))
    <div class="alert alert-success">{{session('success')}}</div>
@endif

@if(session('error'))
    <div class="alert alert-danger">{{session('error')}}</div>
@endif

Example 2: if any error in blade laravel

@if ($errors->any())
     @foreach ($errors->all() as $error)
         <div>{{$error}}</div>
     @endforeach
 @endif

Example 3: laravel validation

/**
 * Store a new blog post.
 *
 * @param  Request  $request
 * @return Response
 */
public function store(Request $request)
{
    $validatedData = $request->validate([
        'title' => 'required|unique:posts|max:255',
        'body' => 'required',
    ]);

    // The blog post is valid...
}

Example 4: validate field for existing client laravel

unique:users,username,id,1 // table, field, idcolumn, value to ignore