Feature: md-error for md-select

[mtpultz]

Bug, feature request, or proposal:

Feature

What is the requested behavior?

If a select is invalid have the option to show a message

What is the current behavior?

If an validation error occurs no message is displayed

What is the use-case or motivation for changing an existing behavior?

I can understand why you might not have md-error initially since it is a select, but we're finding that there are use cases where being able to provide more information based on either a selection or lack of a selection indicating what this means would be very useful.

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

Angular 4.2.5, Angular Material 2.0.0-beta.7, Windows 10

Is there anything else we should know?

[willshowell]

Dupe of #4673 and sort of #2498

[crisbeto]

Closing as a duplicate.

[ram-ks]

@crisbeto None of these duplicates #4673, #2498 contain a solution. Do we have any other ticket which shows how to achieve this ?

[crisbeto]

It's not currently possible. Those issues are for tracking the implementation.

[finalxcode]

@crisbeto when to achieve this?

[willshowell]

@finalxcode it's coming soon. See #6488

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