attribute binding override

[miguelcobain]

Couldn't find any information on this.

I'm trying to extend some behaviour of Ember.TextField. I'm trying to add some logic for type="datetime-local" inputs, to be able to bind date-typed variables directly.

As we know, input values are strings, not dates. So in my new class that extends Ember.TextField I need a new property to be bound to the input that is basically a date converted to a string that the input expects.
Ideally I would like to reopen Ember.TextField and then only apply this logic if the input type is datetime-local and the bound value is a Date.

My 2 questions are:

1. Is there any way to change an attribute binding defined in a superclass?
   If it were possible I could just write attributeBindings:['value:textValue'] in my View/Component subclass. This would override the previous value binding definition from Ember.TextField.
2. Is this date binding support feature desired in the core?

[trek]

This is a great question for StackOverflow. We try to use Issues only for reporting bugs. You can check the contributing guidelines https://github.com/emberjs/ember.js/blob/master/CONTRIBUTING.md for information about ways to post.

Please link the StackOverflow question back here when you've posted.

[trek]

@miguelcobain where you able to post this to SO and get help?

[miguelcobain]

@trek, yes: http://stackoverflow.com/questions/27906553/how-to-override-attribute-bindings-in-emberjs/27921578#27921578

There is a working solution, but I'd rather see Ember supporting something like "overridable concatenated properties", or "overridable attribute/class bindings".

[miguelcobain]

Is this feature desired in core?
I would be happy to try and make a PR. :)
Probably behind a feature flag?