Cara Mudah Membuat Google Auth Pada Laravel

composer require laravel/socialite

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use App\Models\Applicant;
use Socialite;

class GoogleController extends Controller
{
    public function redirect()
    {
        return Socialite::driver('google')->redirect();
    }
    
    public function callback()
    {
        if (Auth::guard('applicant')->check()) {
            return redirect('/home');
        }
        
        $oauthUser = Socialite::driver('google')->user();
        
        $applicant = Applicant::where('google_id', $oauthUser->id)->first();
        
        if ($applicant) {
            Auth::guard('applicant')->loginUsingId($applicant->id);
            
            return redirect('/home');
        } else {
            $applicant = Applicant::where('email', $oauthUser->email)->first();
            $applicant->update([ 'google_id' => $oauthUser->id ]);
            
            Auth::guard('applicant')->login($applicant);
            
            return redirect('/home');
        }
    }
}

php artisan make:migration add_column_google_id_in_applicants_table

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class AddColumnGoogleIdInApplicantsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('applicants', function (Blueprint $table) {
            $table->string('google_id')->nullable();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('applicants', function (Blueprint $table) {
            $table->dropColumn('google_id');
        });
    }
}

protected $fillable = [
    'name', 'email', 'password', 'google_id'
];

php artisan migrate

'google' => [
    'client_id' => '#CLIENTID',
    'client_secret' => '#CLIENTSECRET',
    'redirect' => 'http://127.0.0.1/google/callback',
],

Route::get('google', 'GoogleController@redirect')->name('google.redirect');
Route::get('google/callback', 'GoogleController@callback')->name('google.callback');

<div class="form-group m-0">
    <input type="submit" class="btn btn-block btn-primary-dws" onclick="window.open('')" value="Login with Google">
</div>