Question

我有2个函数第一个用angular控制器启动，第二个从数据库加载一个状态，问题是因为JavaScript是异步的，当我在函数中使用时变量$scope.info.loadState是未定义的，搜索我找到函数.done如何解决这个问题，但现在启动控制器时会出现以下错误Error: loadByIdAssetState(...) is undefined 功能代码如下

angular.module('assetModule')
  .controller('assetEditCtrl', ['selectedService','assetRESTService'
                           ,'assetStateRESTService','$location', '$modal' 
                           ,'$scope', assetEditCtrl]);

function assetEditCtrl (selectedService, assetRESTService, assetStateRESTService, $location, $modal, $scope) {
        $scope.file = {};
        $scope.data = {};
        $scope.info = {};
initCtrl();

function initCtrl() {
  $scope.info.selected = {};
  if(selectedService.getSelected() != undefined){
    $scope.file.asset = selectedService.getSelected();
    selectedService.setSelected(undefined);
    $scope.info.loadState = loadByIdAssetState($scope.file.asset.assetState_id)
    .done(function(state) {
      console.log(state);
      $scope.file.asset.stateName = state.state;
      return state;
    });
    console.log($scope.info.loadState);
    $scope.file.asset.stateName = $scope.info.loadState.state;
  }

}


function loadByIdAssetState(stateId) {
  assetStateRESTService.getByIdAssetStates(stateId)
    .then(function(state) {
      console.log(state);
      $scope.info.loadStateReady = true;
      return state;
    })
    .catch(function(error) {
      console.log(error);
    });

 }
}

getSelected是一个返回所选资产的服务，资产有assetState_id，我希望名称为此状态

Answer 1

看起来您忘记将loadByIdAssetState注入控制器，您必须这样做才能使用它。这样做：

 function initCtrl(loadByIdAssetState) {
    $scope.info.loadState = loadByIdAssetState($scope.file.asset.assetState_id).done(function(state) {
      console.log(state);
      $scope.file.asset.stateName = state.state;
      return state;
    });
    console.log($scope.info.loadState);
    $scope.file.asset.stateName = $scope.info.loadState.state;
}

错误：函数（...）未定义

1 个答案: