Angularjs, watching variable value change

Question

I have the AngularJS module declaration as below. Here I have declared value AppModel. I wanted to write code which will be triggered when AppModel.currentTable is changed, How can I watch for this value change ?

angular.module('MIIApp', ['MIIServices']).
value("AppModel",{
    currentTable:"TESTME-h",
    currentUser:null
});

Any help!!!.

I found a solution, I have attached the "watcher" like below, Let me know if there is a better way run(function($rootScope, AppModel) { $rootScope.AppModel = AppModel; $rootScope.$watch("AppModel.currentTable", function(){ alert("currentable chagned : "+AppModel.currentTable); }); }); — Gireesh
– Gireesh, Commented Oct 9, 2012 at 15:46
Its not very consistent, some times this event is not fired at all, I tried updating the model value from a 'directive' but the event is not fired, But If I try to update the value from a 'controller' it works, Any idea why ? — Gireesh
– Gireesh, Commented Oct 13, 2012 at 8:41

Robert · Accepted Answer · 2012-10-15 10:26:17Z

1

I don’t think you should be doing this. As you can see here a value is intended to be a constant:

value(name, value)

A short hand for configuring services if the $get method is a constant.

In AngularJS a service is a singleton and a value is the most simple of the possible services, when called returns always the same. I don’t know what you need, but could it be you are confusing models with services?

answered Oct 15, 2012 at 10:26

Robert

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