Call to undefined cast

I get error when trying to use App\Model\User. The error is from illuminate\Database\Eloquent\InvalidCastException.

Il get this message : Call to undefined cast [App\Models\Role] on Column [role] in model [App\Models\User]

Here is my code : protected $cast = [ 'email_verified_at' => 'datetime' , 'password' => 'hashed' , 'role' => Role::class, ];

Public function isAdmin(): bool { return $this->role == Role::Admin; }

Have an Idea ?

kokoshneta

2 years ago

Level 27

You can’t just cast an attribute to any class you want by simply giving the name of that class. You need to use proper casting classes for that.

2 likes

Niush

2 years ago

Level 50

Better use PHP Enum and Enum casting: https://laravel.com/docs/10.x/eloquent-mutators#enum-casting

// Create File: app/Enum/Roles.php

<?php

namespace App\Enum;

enum Roles: string
{
    case Admin = 'admin';
    case User = 'user';
}

Then in your User Model:

use App\Enum\Roles;
// ...

protected $casts = [
    'email_verified_at' => 'datetime',
    'role' => Roles::class,
];

public function isAdmin(): bool
{
    return $this->role == Roles::Admin;
}

Then work with Enum in your code: auth()->user()->role->value or auth()->user()->role->name or auth()->user()->isAdmin() etc.

1 like

kokoshneta

2 years ago

Level 27

@Niush Or better yet, use an integer enum, rather than a string enum, so you can use bitmasking to store multiple user roles in a single column.

// Roles class
enum Roles: int {
	case BaseUser = 1;
	case Monitor = 2;
	case Admin = 4;
	case Owner = 8;
}

---

// User class
public function isAdmin() : bool {
    return $this->role & Roles::Admin->value;
}

// Or more generally
public function isRole(Roles $role) : bool {
	return $this->role & $role->value;
}

(Note that in this scenario, you don’t actually cast the role as an enum, but keep it as an integer.)

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