cssd-back/app/User.php

<?php

namespace App;

use Illuminate\Notifications\Notifiable;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Laravel\Passport\HasApiTokens;

class User extends Authenticatable
{
    use Notifiable, HasApiTokens;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password','cell_number','status','medical_center_id'
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'email_verified_at' => 'datetime',
    ];

    public function medicalcenter()
    {
        return $this->belongsTo('App\MedicalCenter');
    }
    public function testresults()
    {
        return $this->hasMany('App\TestResult');
    }
    public function testtypes()
    {
        return $this->hasMany('App\TestType');
    }

    public function findForPassport($username)
   {
       return $this->where('cell_number', $username)->first();
   }
}