What is the correct method for setting a scope variable from a service in Angular?

Is there a way to retrieve the return value from a service method and set it into the scope for further processing in the template?

I've discovered that I cannot directly access the scope within services. While I could use Rootscope, I believe there might be a better approach.

Any suggestions on how I can easily transfer values from a service to the scope?

Thank you for any guidance provided.

Below is the code snippet:

/**
      * Init autocomplete dropdown menu for project list
      */
     this.getProjectListForAutocomplete =  function (container, options) {
         $("#autocompleteProjects").kendoAutoComplete({
             dataSource :  {
                 type: "json",
                 serverFiltering: true,
                 transport: {
                     read: function (options) {
                         console.log("List");
                         console.log(options.data);

                         ApiService.doHttpRequest(
                             "POST",
                             $rootScope.apiBaseUrl + "gpsaddress/search",
                             requestParams
                         )
                             .success(function (data, status, headers, config) {

                                         break;
                                 }
                             })
                             .error(function (data, status, headers, config) {

                             });
                     }
                 }
             },
             dataTextField: "city"  ,
             dataValueField: "address.city",
             filter: "contains",
             minLength: 1,
             change  : function (e) {
                 console.log("change");
                 //console.log(e);
             },
             select  : function (e) {
                 console.log("select");
                 var dataItem = this.dataItem(e.item.index());
                 console.log(dataItem);
                 // Here i need set scope in controller
             }
         });
     };

Answer №1

Check out the demonstration below:

var app = angular.module('app', []);


app.service('dataService', function() {

  var _person = {

    name: "jack",
    surname: "doe"

  }

  return {
    person: _person

  }

})
app.controller('fCtrl', function($scope, dataService) {

  $scope.person = dataService.person;

});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

<div ng-app="app">
  <div ng-controller="fCtrl">
    <p>First Name: {{person.name}}</p>
    <p>Last Name: {{person.surname}}</p>
    Edit First Name:<input type: "text" ng-model="person.name" />
  </div>
</div>

Answer №2

Method One :

Within the service:

serviceFunction: function(scope){
   //processing
   scope.scopeData = newData;
}

In the controller:

  service.serviceFunction($scope);

When the controller calls the serviceFunction of the service, data is processed and assigned to scope.scopeData. Here, scope refers to the $scope object (passing the $scope object to the serviceFunction method).

Method Two-

Within the service:

serviceFunction: function(){
   //processing
   return resultData;
}

In the controller:

  $scope.scopeData = service.serviceFunction();

Answer №3

Instead of "set-scope-variable-from-service," you actually BIND to it. It's essentially the same concept in different words. @sss is spot on with that explanation.

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