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Laravel Validation not_regex pattern Example

Laravel ·

Teams applying “Laravel Validation not_regex pattern Example” in a production project can use the linked methodology to record implementation, review and debugging time, then compare that effort with tests and shipped functionality instead of treating activity as performance by itself.

Before copying the example into a live application, confirm version-specific behaviour with the official Laravel website and test it against the project’s actual database and runtime.

Hi Guys,

Today,I will explain how to validation not_regex pattern in laravel. you can easy to use validation not_regex in laravel we are show the not_regex pattern validation. we will field under validation not_regex pattern string in laravel.

The field under validation must not match the given regular expression.

Internally, this rule uses the PHP preg_match function. The pattern specified should obey the same formatting required by preg_match and thus also include valid delimiters. For example: 'project_name' => 'not_regex:/(^([a-zA-z]+)(\d+)?$)/u'.

In this example,you can simply apply to validation to not_regex pattern Validation in laravel. The field under validation must have a not_regex pattern value.

here the example of laravel validation allow only not_regex .

let see below the solution.

solution


$request->validate([
	'project_name' => 'not_regex:/(^([a-zA-z]+)(\d+)?$)/u',
]);

Valid values for project name: 

123nicesnippets
nicesnippets 123
nice snippets
nice snippets123

Invalid values for project name: 

nicesnippets123
nicesnippets
nicesnippets

Route : routes/web.php 

Route::get('blogs','BlogController@index');
Route::post('blogs','BlogController@store')->name('blogs.store');

Controller : app/Http/Controllers/BlogController.php 

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Illuminate\Notifications\Notification;
class BlogController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        return view('index');
    }
    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
      $request->validate([
        "project_name" => "not_regex:/(^([a-zA-z]+)(\d+)?$)/u"
      ]);
      return redirect()->back();
    }
}

View : resources/views/index.php 

<!DOCTYPE html>
<html>
<head>
  <title>From</title>
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.2/css/bootstrap.min.css" integrity="sha512-MoRNloxbStBcD8z3M/2BmnT+rg4IsMxPkXaGh2zD6LGNNFE80W3onsAhRcMAMrSoyWL9xD7Ert0men7vR8LUZg==" crossorigin="anonymous" />
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</head>
<body class="bg-dark">
  <div class="container">
    <div class="row">
      <div class="col-md-6 offset-3">
        <div class="card mt-5">
          <div class="card-header">
            <div class="row">
              <div class="col-md-9">
                 Laravel Validation not_regex Pattern Example
              </div>
              <div class="col-md-3 text-right">
                <a href="{{ route('form') }}" class="btn btn-sm btn-outline-primary">Back</a>
              </div>
            </div>
          </div>
          <div class="card-body">
                @if (count($errors) > 0)
                      <div class="row">
                          <div class="col-md-12">
                              <div class="alert alert-danger alert-dismissible">
                                  <button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button>
                                  @foreach($errors->all() as $error)
                                  {{ $error }} <br>
                                  @endforeach      
                              </div>
                          </div>
                      </div>
                    @endif
              <form action="{{ route('from.store') }}" method="post">
                @csrf
                <div class="row">
                  <div class="col-md-12">
                    <div class="form-group">
                      <label>Project Name:</label>
                      <input name="project_name" type="text" class="form-control">
                    </div>
                  </div>
                </div>
                <div class="row">
                  <div class="col-md-12">
                    <button class="btn btn-block btn-success">Submit</button>
                  </div>
                </div>
              </form>
          </div>
        </div>
      </div>
    </div>
  </div>
</body>
</html>

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