Re: [PHP-DEV] Decorators Revisited

Ralph,

to write. This is one of the reasons that traits are so heralded.
>> Because problems that are easy to solve with decorators (in general) are
>> difficult to solve with PHP, so people wind up writing copy/paste
>>
>
> If what you're trying to do is decorate an instance of a particular
> concrete type, the basic structure/foundation for creating a Decorator (as
> defined by wikipedia), can be achieved in PHP with about 3 lines of code:
>
> class FooDecorator extends Foo {
>     protected $subject;
>     public function __construct(Foo $foo) {
>         $this->subject = $foo;
>         foreach (get_object_vars($foo) as $n => $v) {
>             $this->{$n} =& $foo->{$n};
>         }
>     }
> }
>
> At this point, any instance of new Foo is statefully and type equivalent
> to new FooDecorator($foo).  Now, you're free to add in your custom
> decoration logic, overridden methods, additional methods, new interfaces,
> etc.  An instance of FooDecorator can be used an any place an instance of
> Foo would have been used.  i.e., it's bound to the Foo context.

That's an alternative? Really? Some hackery involving inheritance abuse...?

Let me pose a real world example.