将参数传递给承诺在angularjs回调 [英] Passing parameters to promise's callback in angularjs

问题描述

我想搞清楚的是有没有办法在索引参数承诺的回调函数来传递。例如。

  serviceCall。$ promise.then（函数（对象）{
    $ scope.object =对象;
}）;
 

现在我想在数组索引参数来传递的。

  serviceCall。$ promise.then（函数（对象，我）{
    $ scope.object [I] =东西;
}）;
 

可以这样做？请让我知道。

下面是低于

在code

  StudyService.studies.get（{ID：
$ routeParams.studyIdentifier}）$ promise.then（功能（研究）{
$ scope.study =研究;
对于（VAR I = 0; I＆LT; study.cases.length;我++）{
  StudyService.executionsteps.get（{ID：
  $ routeParams.studyIdentifier，caseId：study.cases [I] .ID}）
      。$ promise.then（功能（executionSteps，I）{
      $ scope.study.cases [I] .executionSteps = executionSteps;
      }）;
  }
}）;
 

解决方案

您可以使用的对于封闭。

例如，在code，使用这样的：

 函数callbackCreator（我）{
  返回功能（executionSteps）{
    $ scope.study.cases [I] .executionSteps = executionSteps;
  }
}
StudyService.studies.get（{ID：$ routeParams.studyIdentifier}）
  。$ promise.then（功能（研究）{
    $ scope.study =研究;
    对于（VAR I = 0; I＆LT; study.cases.length;我++）{
      变种回调= callbackCreator（ⅰ）;
      StudyService.executionsteps.get（{ID：$ routeParams.studyIdentifier，caseId：study.cases [I] .ID}）
        。$ promise.then（回调）;
   }
}）;
 

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;
      });
  }
});

解决方案

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);
   }
});

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