User.php

<?php

namespace App;

use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;
use Tymon\JWTAuth\Contracts\JWTSubject;
use Illuminate\Database\Eloquent\Model;

class User extends Authenticatable implements JWTSubject
{
    use Notifiable;

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

    /**
     * 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',
    ];

    /**
     * Get the identifier that will be stored in the subject claim of the JWT.
     *
     * @return mixed
     */
    public function getJWTIdentifier()
    {
        return $this->getKey();
    }

    /**
     * Return a key value array, containing any custom claims to be added to the JWT.
     *
     * @return array
     */
    public function getJWTCustomClaims()
    {
        return [
            'id'    => $this->id,
            'nome'  => $this->nome
        ];
    }

    public function sistemas()
    {
        return $this->belongsToMany('App\Sistema', 'user_sistema_papel_usuarios')->withPivot('papel_usuario_id');
    }

    public function papelUsuarios()
    {
        return $this->belongsToMany('App\PapelUsuario', 'user_sistema_papel_usuarios')->withPivot('sistema_id');
    }

    // public function newPivot(Model $parent, array $attributes, $table, $exists, $using = NULL)
    // {
    //     if ($parent instanceof PapelUsuario) {
    //         return new PapelUsuarioGroupPivot($attributes, $table, $exists);
    //     }

    //     if ($parent instanceof Sistema) {
    //         return new SistemaGroupPivot($attributes, $table, $exists);
    //     }

    //     return parent::newPivot($parent, $attributes, $table, $exists);
    // }
}