Required on mdSelect

[tanwaniniranjan]

Required on mdSelect is not as clear as it is for the rest of the fields, so the user does not get to know why his sublit button is still disabled

[rschmukler]

I'll add some styling for ng-invalid.ng-dirty.

[rschmukler]

Going to forward to the UX team to get some information about what it should look like, and when.

[ilanbiala]

@rschmukler does it even work? No one has commented otherwise on #1581.

[epelc]

@ilanbiala It doesn't work for me on 0.8.3

Perhaps a quick fix for now would be to add a hidden form element in md-select which has the current value. I've tested this a little bit and it appears to work if you set opacity: 0 and position it correctly. But I think @marcysutton will scream accessibility. So I hope a real fix can come soon.

[PrashantAshok]

wouldn't selecting a default value for md-select work, avoid using ng-required?

[kugler]

More than ng-invalid styling is needed. For the use of ng-messages I think it should have a container similar to md-input-container. This is also in concordance with the discussion in #1586