In this tutorial i will show you how to login with mobile number in laravel using Laravel Custom Auth , laravel provide inbuilt laravel authentication for their user but if you want to create your laravel authentication customization then you need to remove and add some piece of code in laravel 8 for custom authentication.

    Here,we are creating laravel login with mobile number using laravel custom auth.

Step 1 : Create New Project for Login with Mobile Number using Laravel Custom Auth Example

composer create-project --prefer-dist laravel/laravel custom-auth

Step 2 : Create Laravel Authentication using Command

    Now, run below command to run default auth in laravel.

php artisan make:auth

Step 3 : Edit User Migration and Run Migration

    After that add one mobileno filed to your user migration for mobile number authentication.

Schema::create('users', function (Blueprint $table) {
    $table->increments('id');
    $table->string('name');
    $table->string('email')->unique();
    $table->string('mobileno')->unique();
    $table->string('password');
    $table->rememberToken();
    $table->timestamps();
});

    and run below command in your terminal.

php artisan migrate

Step 4 : Make Changes in RedirectIfAuthenticated.php File

    In this step we need to make some change in RedirectIfAuthenticated middleware.So, open app/Http/Middleware/RedirectIfAuthenticated.php file and copy below code.

namespace App\Http\Middleware;

use Closure;
use Illuminate\Support\Facades\Auth;

class RedirectIfAuthenticated
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @param  string|null  $guard
     * @return mixed
     */
    public function handle($request, Closure $next, $guard = null)
    {
        if (Auth::check()) {
            return redirect('/home');
        }

        return $next($request);
    }
}

Step 5 : Make Changes in Controller

    Now, we will make changes in app/Http/Controllers/Auth/LoginController.php file.

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use Illuminate\Http\Request;
use App\Http\Requests;
use App\User;

class LoginController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Login Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles authenticating users for the application and
    | redirecting them to your home screen. The controller uses a trait
    | to conveniently provide its functionality to your applications.
    |
    */

    use AuthenticatesUsers;

    /**
     * Where to redirect users after login.
     *
     * @var string
     */
    protected $redirectTo = '/home';

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('guest')->except('logout');
        $this->user = new User;
    }

    public function login(Request $request)
    {
        // Check validation - Note : you can change validation as per your requirements 
        $this->validate($request, [
            'mobileno' => 'required|regex:/[0-9]{10}/|digits:10',   
                      
        ]);

        // Get user record
        $user = User::where('mobileno', $request->get('mobileno'))->first();

        // Check Condition Mobile No. Found or Not
        if($request->get('mobileno') != $user->mobileno) {
            \Session::put('errors', 'Please Register First mobile number.!!');
            return back();
        }        
        
        // Set Auth Details
        \Auth::login($user);
        
        // Redirect home page
        return redirect()->route('home');
    }
}

Step 6 : Make Changes in Blade File

    Now,open your resources/views/auth/login.blade.php file and make changes as below.

@extends('layouts.app')

@section('content')
<div class="container">
    <div class="row">
        <div class="col-md-8 col-md-offset-2">
            <div class="panel panel-default">
                <div class="panel-heading">Login</div>

                <div class="panel-body">
                    <form class="form-horizontal" method="POST" action="{{ route('login') }}">
                        {{ csrf_field() }}
                        <div class="form-group{{ $errors->has('mobileno') ? ' has-error' : '' }}">
                            <label for="mobileno" class="col-md-4 control-label">Enter Mobile No.</label>
                            <div class="col-md-6">
                                <input id="mobileno" type="text" class="form-control" name="mobileno" value="{{ old('mobileno') }}" required autofocus>
                                @if ($errors->has('mobileno'))
                                    <span class="help-block">
                                        <strong>{{ $errors->first('mobileno') }}</strong>
                                    </span>
                                @endif
                            </div>
                        </div>

                        <div class="form-group">
                            <div class="col-md-6 col-md-offset-4">
                                <div class="checkbox">
                                    <label>
                                        <input type="checkbox" name="remember" {{ old('remember') ? 'checked' : '' }}> Remember Me
                                    </label>
                                </div>
                            </div>
                        </div>

                        <div class="form-group">
                            <div class="col-md-8 col-md-offset-4">
                                <button type="submit" class="btn btn-primary">
                                    Login
                                </button>

                                <a class="btn btn-link" href="{{ route('password.request') }}">
                                    Forgot Your Password?
                                </a>
                            </div>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>
@endsection

    Now, it is ready to run.