Question

9

Passing parameters to promise's callback in angularjs

rated 0 times [ 14] [ 5] / answers: 1 / hits: 20474 / 10 Years ago, fri, july 25, 2014, 12:00:00

I am trying to figure out is there is any way to pass in an index argument to a promise's callback function. For instance.

serviceCall.$promise.then(function(object){

    $scope.object = object;

});

Now I want to pass in an array index parameter as

serviceCall.$promise.then(function(object,i){

    $scope.object[i] = something;

});

Can this be done? Please let me know.

Here is the code below

StudyService.studies.get({id:    

$routeParams.studyIdentifier}).$promise.then(function(study) {

$scope.study = study;

for(var i=0;i<study.cases.length;i++){

  StudyService.executionsteps.get({id:   

  $routeParams.studyIdentifier,caseId:study.cases[i].id})

      .$promise.then(function(executionSteps,i){

      $scope.study.cases[i].executionSteps = executionSteps;

      });

  }

});

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danyelletyanah

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3 Years ago

answered 10 Years ago lucianod · Accepted Answer

you can use a closure for that.

for example, in your code, use something like:

function callbackCreator(i) {

  return function(executionSteps) {

    $scope.study.cases[i].executionSteps = executionSteps;

  }

}

StudyService.studies.get({id: $routeParams.studyIdentifier})

  .$promise.then(function(study) {

    $scope.study = study;

    for(var i=0;i<study.cases.length;i++) {

      var callback = callbackCreator(i);

      StudyService.executionsteps.get({id: $routeParams.studyIdentifier,caseId:study.cases[i].id})

        .$promise.then(callback);

   }

});