feat(ngModel): public method to force run model -> view binding pipeline

[aleksanyan]

Added ngModel.NgModelController#$forceModelToViewBound.
It triggers $formatters pipeline, and in case of changed $viewValue,
runs validators and update the UI without changing actual model.
Basically it simulates fake model value change.

Closes #12815

[Narretz]

Thanks for the PR. It's something that's come up a few times, we'll consider it for 1.5
In the example in your issue, where would you call this function? In a $parser?

[aleksanyan]

Welcome. I would call it from ngModelController (as in PR). So it could be called publically in the end application.
I realize the PR's code is not clean enough, so if you like the idea, I can clean up and push.

Also would be good to have similar function for $parsers pipeline.
http://stackoverflow.com/questions/27565742/trigger-ngmodelcontroller-parsers-pipeline-from-a-watch/32149600#32149600

[Narretz]

I meant from where would you call it? As in from which part of your
application? Inside an ngModel parser, inside a directive when something
chnages or an event happens, or from ngChange ...
Am 11.09.2015 13:21 schrieb "Artur Aleksanyan" [email protected]:

Welcome. I would call it from ngModelController (as in PR). So it could be
called publically in the end application.
I realize the PR's code is not clean enough, so if you like the idea, I
can clean up and push.

Also would be good to have similar function for $parsers pipeline.

http://stackoverflow.com/questions/27565742/trigger-ngmodelcontroller-parsers-pipeline-from-a-watch/32149600#32149600

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#12818 (comment).

[aleksanyan]

Inside a directive, on click event for some button.

[Narretz]

Implemented in 05fdf91