view model example

view-model-example.php

<?php

class ViewModel
{
    public $title;
    
    public $lang;
    
    public $translations = [];
    
    public $data = [];
    
    public function t($key)
    {
        return !empty($this->translations[$this->lang][$key])
            ? $this->translations[$this->lang][$key]
            : $key;
    }
    
    public function serve()
    {
        echo $this->title . "\n";
        foreach($this->data as $key => $value)
        {
            echo "{$this->t($key)}: $value\n";
        }
    }
}

class User
{
    public static function fromArray(array $a)
    {
        $user = new self;
        
        foreach($a as $key => $value)
        {
            $user->{$key} = $value;
        }
        
        return $user;
    }
}

class UserDetailViewModel extends ViewModel
{
    public $name;
    
    public $email;
    
    public $phone;
    
    public $translations = [
        'nl' => [
            'name' => 'naam',
            'email' => 'email adres',
            'phone' => 'telefoon nummer'
        ]
    ];
    
    public function __construct($lang, User $user)
    {
        $this->lang = $lang;
        $this->title = 'User view';
        $this->data['name'] = $user->name;
        $this->data['email'] = $user->email;
        $this->data['phone'] = $user->phone;
    }
}

$user = User::fromArray([
    'name' => 'a',
    'email' => 'a@a.a',
    'phone' => 123
]);

$view = new UserDetailViewModel('nl', $user);
$view->serve();