Update validate after change element

[SergioGeeK7]

Hello.

I have a form and after submitting show this

http://i.imgur.com/uM9zgto.png

when I completed the filds of the form the select doesn't update , he continues like invalid input for the drop down.

http://i.imgur.com/X0FWGoH.png

I think we should add a auto-validate property like input-paper . meanwhile
I have add a code after changed event is fired

http://i.imgur.com/zbbtOdz.png

[cdata]

If I understand this correctly, you are proposing that we add an attribute to auto-validate the paper-dropdown-menu when the value changes?

[SergioGeeK7]

mmmmm so so, I mean if we add auto-validate property to the paper-dropdown-menu this will auto-validate when the value change, this will avoid the red line under the drop-down-menu after submitting one wrong time

[hormesiel]

Adding an auto-validate attribute like paper-input already has would be a great idea imo. This way if the form is validated and the dropdown has no value selected, it goes red like it currently does, but if I select a value I except it to switch back from error to normal state without having to resubmit the form or to manually call dropdown.validate(), which isn't the case currently. Hence the auto-validate attribute.

[nathancassano]

Had the same issue except I wanted to add that the this.fire('change') is not firing off when the selection is changed.

[mercmobily]

I just got bitten by this one too. Changing the select doesn't re-validate, which creates buggy forms -- or, forces developers to run validate() manually

[mercmobily]

I fixed this issue in #207 . @flawyte In the meantime, feel free to monkey patch it -- that's what I did in https://github.com/mercmobily/hot-polymer-monkey ...