Laravel 8 Custom Validation Error Messages Tutorial

Laravel 8 custom validation rules and error messages. In this tutorial, we will show you how to add custom validation rules and display custom validation error messages in laravel 8 app.

If you want to change the default validation rules and validation error message in laravel 8 app.

So This laravel 8 custom validation error message and rules tutorial will guide you step by step on how to add custom validation rules and display custom validation error messages on laravel 8 app.

Laravel 8 Custom Validation Rule & Error Message Example

  • Step 1 – Install Laravel 8 App
  • Step 2 – Connecting App to Database
  • Step 3 – Run Migration Command
  • Step 4 – Add Routes
  • Step 5 – Generate Controller By Command
  • Step 6 – Create the blade view
  • Step 7 – Run Development Server

Step 1 – Install Laravel 8 App

First of all, Execute the following command on terminal to install or download laravel 8 app on your system:

composer create-project --prefer-dist laravel/laravel Blog

This command will install fresh new laravel setup in provided location. After that, open your laravel web application in any text editor and Go to your application .env file and set up database credentials and move next step.

Step 2 – Connecting App to Database

In this step, Add database credentials in the .env file:

DB_CONNECTION=mysql DB_HOST=127.0.0.1 DB_PORT=3306 DB_DATABASE=here your database name here
DB_USERNAME=here database username here
DB_PASSWORD=here database password here

Step 3 – Run Migration Command

In this step, execute the following command on terminal to create tables into database:

php artisan migrate

This command will create some tables into your database.

Step 4 – Add Routes

In this step, Open your routes/web.php and update the following routes into your routes/web.php file:

routes/web.php

use App\Http\Controllers\CustomErrorController; Route::get('form', [CustomErrorController::class, 'index']);
Route::get('store', [CustomErrorController::class, 'store']);

Step 5 – Generate Controller By Command

In this step, execute the following command on terminal to create custom error message controller in laravel 8 app:

php artisan make:controller

CustomErrorController

After that, Go to app/Http/Controllers/CustomErrorController.php and update the following code into your controller file:

app/Http/Controllers/CustomErrorController.php

namespace App\Http\Controllers; use Illuminate\Http\Request;
use App\Models\User; class CustomErrorController extends Controller
{ public function create() { return view('form'); } public function store(Request $request) { $request->validate( [ 'name' => 'required', 'password' => 'required|min:5', 'email' => 'required|email|unique:users' ], [ 'name.required' => 'Name is required', 'password.required' => 'Password is required' ] ); $input = $request->all(); $input['password'] = bcrypt($input['password']); $user = User::create($input); return back()->with('success', 'User created successfully.'); }
}

Step 6 – Create Blade View

In this step, Go to resources/views folder and create one blade view file name from.blade.php and update the following code into your file:

<!DOCTYPE html>
<html>
<head> <title>Laravel 8 Custom Validation Error Message Example Tutorial -tutcod.com</title> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
</head>
<body> <div class="container"> <h1>Laravel 8 Custom Validation Error Message Example</h1> @if(Session::has('success')) <div class="alert alert-success"> {{ Session::get('success') }} @php Session::forget('success'); @endphp </div> @endif <form method="POST" action="{{ route('store') }}"> @csrf <div class="form-group"> <label>Name:</label> <input type="text" name="name" class="form-control" placeholder="Name"> @if ($errors->has('name')) <span class="text-danger">{{ $errors->first('name') }}</span> @endif </div> <div class="form-group"> <label>Password:</label> <input type="password" name="password" class="form-control" placeholder="Password"> @if ($errors->has('password')) <span class="text-danger">{{ $errors->first('password') }}</span> @endif </div> <div class="form-group"> <strong>Email:</strong> <input type="text" name="email" class="form-control" placeholder="Email"> @if ($errors->has('email')) <span class="text-danger">{{ $errors->first('email') }}</span> @endif </div> <div class="form-group"> <button class="btn btn-success btn-submit">Submit</button> </div> </form> </div>
</body>
</html>

Step 7: Run Development Server

In this step, Execute the PHP artisan serve command on terminal to start server locally:

php artisan serve

If you want to run the project diffrent port so use this below command

php artisan serve –port=8080

Then open your browser and hit the following url on it:

http://localhost:8000/form

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