Add inheritance to Eloquent models by using the same table.

Our child models referencing the same table as its parent, so we must store the type.

Schema::create('users', function (Blueprint $table) {
    $table->string('type', 16);
    // ...
});

The base model provides an $availableRoles property. Here we'll register all available child models. Laravel guesses the referencing table from the class name – but our model class depends on its type so we have to be explicit with the $table.

The Vhnh\Roles\HasRoles trait uses mass assignment, so we must allow for that by adding the type attribute to our $fillable fields.

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;
use Vhnh\Roles\HasRoles;

class User extends Model
{
    use HasRoles;

    protected $availableRoles = [
        'admin' => Admin::class,
    ];

    protected $fillable = [
        'type',
    ];

    protected $table = 'users';

    // ...
}

The Vhnh\Roles\HasRoles trait does not rely on ReflectionClass instead we add a static $role property to resolve the correct model instance.

<?php

namespace App;

class Admin extends User
{
    protected static $role = 'admin';

    // ...
}

The Vhnh Role package is open-sourced software licensed under the MIT license.