I am writing a ui control that uses ngModel:
<foo ng-model="myModel"> I would like to ensure that ngModel.$modelValue is
never empty and would like to implement the following logic inside the
directive: if $modelValue is empty (including programmatically) -> set to
internal default model. To be clear, it is not enough for $viewValue not to
be empty. I would like $modelValue to not be empty as well.
Tried invoking $setViewValue(DEFAULT_VIEW) from a) $parser whenever model
is empty; b) a $watch watching $modelValue, but do not see $modelValue
being updated to a default model (from hard-coded DEFAULT_VIEW. What
approach should I take?
thanks,
-nikita
function link(scope, ngModel){
var DEFAULT_VIEW = {};
ngModel.$formatters.unshift(modelToView);
ngModel.$parsers.push(viewToModel);
//init
ngModel.$setViewValue(DEFAULT_VIEW);
function modelToView(m){
if(!m) {
ngModel.$setViewValue(DEFAULT_VIEW); //no apparent effect on $modelValue
};
//handle non-empty case
}
//also tried watching $modelValue
scope.$watch(function(){return ngModel.$modelValue;}, function(mv, oldMv){
if(!mv)
{
ngModel.$setViewValue(DEFAULT_VIEW); //no apparent effect on $modelValue
}
});
}
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