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redheat

2007-Nov-19 13:59 UTC

1.6 -- Can''t access superclass or subclasses

Any ideas why I only get "klass()" returned when I try to access
ClassName.superclass or ClassName.subclasses, and "undefined" when I
access class_instant.superclass or class_instant.subclasses?

I''m probably doing something really stupid.

var Animal = Class.create({
	initialize: function(name) {
		this.name = name;
	}
});

var Dog = Class.create(Animal, {
	initialize: function($super, name) {
		$super(name);
	},

	bark: function() {
		return this.name + '' said "Woof!"'';
	}
});

var poodle = new Dog(''Jack'');
poodle.superclass; //--> undefined
Dog.superclass; //--> klass()
--~--~---------~--~----~------------~-------~--~----~
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Nicolás Sanguinetti

2007-Nov-19 14:05 UTC

head link

Re: 1.6 -- Can''t access superclass or subclasses

You have to call it on the Class, not the instances, and the "klass()"
returned works fine. With your example:

var duck = new (Dog.superclass)("ducky");
duck instanceof Animal>>> true
Best,
-Nicolas

On Nov 19, 2007 11:59 AM, redheat
<ecouchman-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
>
> Any ideas why I only get "klass()" returned when I try to access
> ClassName.superclass or ClassName.subclasses, and "undefined"
when I
> access class_instant.superclass or class_instant.subclasses?
>
> I''m probably doing something really stupid.
>
> var Animal = Class.create({
>        initialize: function(name) {
>                this.name = name;
>        }
> });
>
> var Dog = Class.create(Animal, {
>        initialize: function($super, name) {
>                $super(name);
>        },
>
>        bark: function() {
>                return this.name + '' said
"Woof!"'';
>        }
> });
>
> var poodle = new Dog(''Jack'');
> poodle.superclass; //--> undefined
> Dog.superclass; //--> klass()
> >
>
--~--~---------~--~----~------------~-------~--~----~
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redheat

2007-Nov-19 17:45 UTC

head link

Re: 1.6 -- Can''t access superclass or subclasses

Okay... how do I get the name of the superclass from within the class?
For example: how can I tell from within the Dog Class that Dog is a
subclass of Animal. How can I get the name "Animal" without using
instanceof?

Edd

On Nov 19, 2:05 pm, "Nicolás Sanguinetti"
<godf...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> You have to call it on the Class, not the instances, and the
"klass()"
> returned works fine. With your example:
>
> var duck = new (Dog.superclass)("ducky");
> duck instanceof Animal
>
> >>> true
>
> Best,
> -Nicolas
>
> On Nov 19, 2007 11:59 AM, redheat
<ecouch...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
>
>
>
> > Any ideas why I only get "klass()" returned when I try to
access
> > ClassName.superclass or ClassName.subclasses, and
"undefined" when I
> > access class_instant.superclass or class_instant.subclasses?
>
> > I''m probably doing something really stupid.
>
> > var Animal = Class.create({
> >        initialize: function(name) {
> >                this.name = name;
> >        }
> > });
>
> > var Dog = Class.create(Animal, {
> >        initialize: function($super, name) {
> >                $super(name);
> >        },
>
> >        bark: function() {
> >                return this.name + '' said
"Woof!"'';
> >        }
> > });
>
> > var poodle = new Dog(''Jack'');
> > poodle.superclass; //--> undefined
> > Dog.superclass; //--> klass()--~--~---------~--~----~------------~-------~--~----~
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Tobie Langel

2007-Nov-19 18:00 UTC

head link

Re: 1.6 -- Can''t access superclass or subclasses

You... can''t. That''s a limitations of JavaScript.

On Nov 19, 6:45 pm, redheat
<ecouch...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
wrote:> Okay... how do I get the name of the superclass from within the class?
> For example: how can I tell from within the Dog Class that Dog is a
> subclass of Animal. How can I get the name "Animal" without using
> instanceof?
>
> Edd
>
> On Nov 19, 2:05 pm, "Nicolás Sanguinetti"
<godf...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> You have to
call it on the Class, not the instances, and the "klass()"
> > returned works fine. With your example:
>
> > var duck = new (Dog.superclass)("ducky");
> > duck instanceof Animal
>
> > >>> true
>
> > Best,
> > -Nicolas
>
> > On Nov 19, 2007 11:59 AM, redheat
<ecouch...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
>
> > > Any ideas why I only get "klass()" returned when I try
to access
> > > ClassName.superclass or ClassName.subclasses, and
"undefined" when I
> > > access class_instant.superclass or class_instant.subclasses?
>
> > > I''m probably doing something really stupid.
>
> > > var Animal = Class.create({
> > >        initialize: function(name) {
> > >                this.name = name;
> > >        }
> > > });
>
> > > var Dog = Class.create(Animal, {
> > >        initialize: function($super, name) {
> > >                $super(name);
> > >        },
>
> > >        bark: function() {
> > >                return this.name + '' said
"Woof!"'';
> > >        }
> > > });
>
> > > var poodle = new Dog(''Jack'');
> > > poodle.superclass; //--> undefined
> > > Dog.superclass; //--> klass()--~--~---------~--~----~------------~-------~--~----~
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Rails spinoffs - Nov 2007 - 1.6 -- Can't access superclass or subclasses

1.6 -- Can''t access superclass or subclasses

Re: 1.6 -- Can''t access superclass or subclasses

Re: 1.6 -- Can''t access superclass or subclasses

Re: 1.6 -- Can''t access superclass or subclasses