md-errors disable container's input error requirement to display option

[Shiso]

Bug, feature request, or proposal:

i fought i was facing #4027 but it seems that a md-error is only showed when the md-input-container's input is itself invalid.

I have multiple fields depending on the process over one, and wished to display each errors of theses fields ().

It makes sense, but at the same time an option to disable this condition would help me a lot.

What are the steps to reproduce?

Here is a working plunker to present the issue: http://plnkr.co/edit/3ZYCiYeVo2QITpuQf0R0?p=preview

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

search input through google places and lat/lng population has an example, or any displayed input with only front end motives to be processed over user's actions.

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

I would say any, but i only tested on recent versions

Is there anything else we should know?

I should add that i am a beginner in angular / material, i love it so far and search for the best solution but i missed something please give me a hint !

[willshowell]

I don't really follow your plunker example, but I think you might be looking for a Custom Error Matcher. By default, errors won't show until the input has been touched, so if you want them to display at other times, you'll have to specify when in the matcher function.

If that's not what you're looking for, could you explain further and simplify your example?

[Shiso]

Ho wow, how did i missed that ? And i've just read again my example, it's unclear and with a lot of useless parts.
I've checked your solution and it seems to offer exactly what i need.

so sorry for this post, is there a blackhole for this kind of "questions" ? ^^'

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