errorBag() form option

[cheyner]

Support for setting the error bag will make it possible to render multiple forms on a single page that have independent error handling. As it stands, if each of those forms had -- for example -- a summary() element, they would all indicate an error if there were a validation error in any form that had been submitted.

To link up server side validation with your Aire form, you would do the following:
$request->validateWithBag('custom_bag', [
'somefield' => 'required'
])

And in Aire:
Aire::open()->errorBag('custom_bag')

Didn't add a test -- not yet setup to run tests for this project and it perhaps wasn't clear the best place for that test to live. Maybe ServerValidationTest.php.

[inxilpro]

I can definitely see using this. Would something like useErrorsFrom maybe make more sense?

Aire::open()->rules(...)->useErrorsFrom('secondary-bag');

[cheyner]

I don't mind a different method name along those lines, but I think mentioning "bag" in the name would require less cognition.