Tips for retrieving a value from my controller within my directive

Question

Tips for retrieving a value from my controller within my directive

Currently, I am working with AngularJS and have created a controller along with a directive.

directive = ->
    scope:
        items: "=mkTagsInput"
    link: (scope, element, attributes, controller) ->
        $(element[0]).tagsinput()
        $(element[0]).tagsinput('input').typeahead
            name: "list"
            local: scope.items

This is my CoffeeScript directive implementation so far.

<input type="text" data-role="tagsinput" mk-tags-input="labels" />

I'm facing an issue where I initialize the 'labels' array with [], and although I make an Ajax request to populate the data, the directive seems to be loaded too early. As a result, the value in scope.items always remains as [].

Does anyone have any ideas on how I can resolve this?

javascript ajax angularjs

Answer 1

Answer №1

To ensure you stay updated on any changes to the directive scope's items, you can set up a watch function. This way, whenever the items collection is modified, you will receive a notification.

scope.$watch('items',function(newValue,oldValue) {
  if(newValue) {
      //Your item conllection is in newValue
   }
});

A watch function is triggered whenever there is a change in the reference to the items collection. If you are using angularjs 1.2.0 RC, you can also explore the watchCollection method on the scope. For more information, refer to the documentation available at http://code.angularjs.org/1.2.0rc1/docs/api/ng.$rootScope.Scope

Answer 2

To ensure you stay updated on any changes to the directive scope's items, you can set up a watch function. This way, whenever the items collection is modified, you will receive a notification.

scope.$watch('items',function(newValue,oldValue) {
  if(newValue) {
      //Your item conllection is in newValue
   }
});

A watch function is triggered whenever there is a change in the reference to the items collection. If you are using angularjs 1.2.0 RC, you can also explore the watchCollection method on the scope. For more information, refer to the documentation available at http://code.angularjs.org/1.2.0rc1/docs/api/ng.$rootScope.Scope

Tips for retrieving a value from my controller within my directive

Answer №1

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