Laravel Auth User_id

Introduction

Laravel Auth User_id is a tutorial that teaches you how to use the user_id instead of the default id field for user authentication in Laravel. The tutorial is aimed at intermediate level Laravel developers who are comfortable with working with Laravel's authentication system.

Prerequisites

Before proceeding with this tutorial, you should have a basic understanding of Laravel's authentication system. You should also have Laravel installed on your machine, along with a database of your choice.

Step-by-step Guide

Step 1: Create a Migration

The first step is to create a migration that will add the user_id field to the users table in your database. To do this, navigate to your project's root directory and run the following command:

php artisan make:migration add_user_id_to_users_table --table=users

This will create a new migration file in the database/migrations directory. Open the migration file and modify it as follows:

public function up()
{
    Schema::table('users', function (Blueprint $table) {
        $table->unsignedBigInteger('user_id')->default(0)->after('id');
        $table->unique('user_id');
    });
}

public function down()
{
    Schema::table('users', function (Blueprint $table) {
        $table->dropColumn('user_id');
    });
}

In this migration, we've added a new column named user_id to the users table. We've also set the column's default value to 0 and made it unique.

Step 2: Modify the User Model

Next, we need to modify the User model to use the user_id field for authentication instead of the default id field. Open the User model and modify it as follows:

use Illuminate\Contracts\Auth\Authenticatable;

class User extends Model implements Authenticatable
{
    // ...

    public function getAuthIdentifierName()
    {
        return 'user_id';
    }

    // ...
}

In this code, we've implemented the Authenticatable contract, which is necessary for the User model to be used for authentication. We've also overridden the getAuthIdentifierName method to return user_id instead of id.

Step 3: Modify the Login Controller

Now that the User model has been modified to use user_id instead of id for authentication, we need to modify the LoginController to reflect this change. Open the LoginController and modify the username method as follows:

protected function username()
{
    return 'user_id';
}

This will tell Laravel to use the user_id field instead of the default email field for user authentication.

Conclusion

In this tutorial, we've learned how to use the user_id instead of the default id field for user authentication in Laravel. We modified the users table migration to include a user_id field, modified the User model to use user_id for authentication, and modified the LoginController to reflect this change. We hope you found this tutorial helpful!