Angular ng-options setting pristine to false on load (post 1.4)

[jb-int]

Something about the following combination of "multiple" and "as" in the options expression is making ng-options set pristine to false when the form first loads. Is this an angular bug? Does anyone know of a workaround?

http://plnkr.co/edit/c9ZIgiiisntkJJBeFFdy

[Narretz]

Yep, that looks like a bug. You don't need select as, but you need multiple. It's got something to do with us checking if the view / model has changed after the options have changed. When that's the case, we call $setViewValue with the new selection, which triggers a call to $setDirty.
As a workaround you could add a directive that runs after ngOptions which forces $pristine = true and $dirty = false after the initial loading.

[jb-int]

Thanks for the quick response!

Can anyone tell me how to add a directive that runs after ngOptions?

[m-amr]

@Narretz I think i found the problem
prevoiusValue and nextValue are array for example

previousValue = [1,2]
nextValue = [1,2]

The are the same value but the === operator will return false because they are array
after some debugging i found that these lines cause the problem

if (!ngModelCtrl.$isEmpty(previousValue)) {
      var nextValue = selectCtrl.readValue();
      if (ngOptions.trackBy ? !equals(previousValue, nextValue) : previousValue !== nextValue) {
        ngModelCtrl.$setViewValue(nextValue);
        ngModelCtrl.$render();
      }
    }

what cause the problem is ngOptions.trackBy is undefined and
(previousValue !== nextValue) i will be true becuase [1,2] !== [1,2]

why angular aren't just use equals() function ??

i think this pull request solve the problem
#13326