Here is a simple demonstration of what I'm struggling to achieve.
<div ng-controller="MyCtrl">
<input type="button" ng-click="a=!a" value="toggle a"/>
<div ng-if="a">
<input type="text" ng-model="del.a1" />{{del}}
</div>
<input type="text" ng-model="del.a2" />
{{del}}
</div>
Initially the value of del is {} and ng-if is false the property a1 is under ng-if condition.
Test Case :
step 1 : toggle the ng-if to true so that a1 is visible
step 2 : enter some value into a1 (you can anytime enter value in property a2)
step 3 : now if i again toggle ng-if to false what I'm looking for is the property a1 is to be removed from model.(i.e i just want angular to bind those models which are visible on DOM) like this
Here is the FIDDLE for the above test case.
I guess the problem is with model used as object. but I need a solution in model as object only as I have done lot of coding based on this.
Hope I'm clear with the question.
pls Help
You can watch a value using $scope.$watch and delete a1 key from del object when a is set to false
var myApp = angular.module('myApp', []);
myApp.controller('MyCtrl', function ($scope) {
$scope.del = {};
$scope.a = false;
$scope.$watch('a', function(value) {
if (!value) {
delete $scope.del['a1'];
}
});
})
Please see working demo below
var myApp = angular.module('app', []);
myApp.controller('MyCtrl', function($scope) {
$scope.del = {};
$scope.a = false;
$scope.$watch('a', function(value) {
if (!value) {
delete $scope.del['a1'];
}
});
})
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app">
<div ng-controller="MyCtrl">
<input type="button" ng-click="a=!a" value="toggle a" />
<div ng-if="a">
<input type="text" ng-model="del.a1" placeholder="a1" />{{del}}</div>
<input type="text" ng-model="del.a2 " placeholder="a2" />{{del}}
</div>
In your example only the models visible in the DOM are watched.
If you mean you want the model value removed from the object then you would need to have a watch on 'a' that knows what values to remove from the model.
