Rails spinoffs - Feb 2008 - Retrieving the class name and names of parent classes

If you take the code:

var Vehicle = Class.create({
  initialize: function() {
	alert(***class name***);
  }
});

var Car = Class.create(Vehicle, {
  initialize: function() {
	alert(***class name***);
	alert(***parent class name***);
  }
});



var t1 = new Vehicle("A Vehicle");
var t2 = new Car("A Car");

How would the output the name od the current class and retrieve the
name of the parent class in the relevent sections?

Any help appreciated, many thanks.
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On 18/02/2008, GarethAtFlignet
<garethinwales-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
wrote:
>
> If you take the code:
>
> var Vehicle = Class.create({
>   initialize: function() {
>         alert(***class name***);
>   }
> });
>
> var Car = Class.create(Vehicle, {
>   initialize: function() {
>         alert(***class name***);
>         alert(***parent class name***);
>   }
> });
>
>
>
> var t1 = new Vehicle("A Vehicle");
> var t2 = new Car("A Car");
>
> How would the output the name od the current class and retrieve the
> name of the parent class in the relevent sections?
>
> Any help appreciated, many thanks.
There isn''t a native way.

Instead, you have to add a param (say selfClass) in which you manually
store the current class name and a method (getParentClass()) to
extract get the $super.selfClass.

If the method was built in at low level (say object), then every
object would have the ability to find it''s parent class. You may also
need a getParentClasses() method.

Also, as prototype sort of supports multiple inheritence (mixins I
think is the term), then a single class COULD actually be made from
several other classes, so this may need to be considered (and each of
those classes could have multiple parents).

-- 
-----
Richard Quadling
Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731
"Standing on the shoulders of some very clever giants!"

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Thanks Richard. Apologies for the confusion but when I said parent I
did in fact mean the superclass (e.g. Vehicle is the superclass of
Car).


On 18 Feb, 12:00, "Richard Quadling"
<rquadl...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
wrote:
> On 18/02/2008, GarethAtFlignet
<garethinwa...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
>
>
>
>
>
> > If you take the code:
>
> > var Vehicle = Class.create({
> >   initialize: function() {
> >         alert(***class name***);
> >   }
> > });
>
> > var Car = Class.create(Vehicle, {
> >   initialize: function() {
> >         alert(***class name***);
> >         alert(***parent class name***);
> >   }
> > });
>
> > var t1 = new Vehicle("A Vehicle");
> > var t2 = new Car("A Car");
>
> > How would the output the name od the current class and retrieve the
> > name of the parent class in the relevent sections?
>
> > Any help appreciated, many thanks.
>
> There isn''t a native way.
>
> Instead, you have to add a param (say selfClass) in which you manually
> store the current class name and a method (getParentClass()) to
> extract get the $super.selfClass.
>
> If the method was built in at low level (say object), then every
> object would have the ability to find it''s parent class. You may
also
> need a getParentClasses() method.
>
> Also, as prototype sort of supports multiple inheritence (mixins I
> think is the term), then a single class COULD actually be made from
> several other classes, so this may need to be considered (and each of
> those classes could have multiple parents).
>
> --
> -----
> Richard Quadling
> Zend Certified Engineer
:http://zend.com/zce.php?c=ZEND002498&r=213474731
> "Standing on the shoulders of some very clever giants!"
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Managed to modify some code by Tobias Nurmiranta to achieve what I
needed.

see:
http://groups.google.com/group/rubyonrails-spinoffs/browse_thread/thread/b712bb66a1866f74
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