Authenticate user by other fields through Laravel Passport

custom_auth_user_by_passport.md

How to authenticate user by other fields in Laravel

Authenticate user by other model fields in Laravel 5.x API and Passport.

Model User:

<?php

class User extends Authenticatable implements Transformable
{
    use TransformableTrait;
    use Notifiable;
    use HasApiTokens;
  
    protected $fillable = [
        "registry",
        "cpf",
        "username",
        "password",
    ];
    
    /** 
     * Implement those methods below. This methods can be found at: ../vendor/laravel/passport/src/Bridge/UserRepository.php
     */
    
    public function findForPassport($registry)
    {
        // Find the user by the parameter received, in this case is registry field
        $user = $this->where('registry', '=', $registry)->first();
        if(!$user)
            return null;

        // check if user status is: 1 - enabled
        if($user->status != 1) {
            return null;
        }

        return $user;
    }

    /** Validate password by any field of model user, in this case is cpf field **/
    public function validateForPassportPasswordGrant($password)
    {
        return $this->where('cpf', $password)->first();
    }
 }