如何从Angular控制器修改数据库查询的结果

Question

我是Angular和MEAN.js的新手，我试图弄清楚如何处理从我的控制器（客户端）返回的数据，在数据进入视图之前。我有一个控制器中的功能，使查询到数据库。

$scope.getDataPoints = function() { 
     $scope.datapoints = Datapoints.query(); 
     console.log($scope.datapoints.length); 
     console.log($scope.datapoints); 

     for (var i = 0; i < $scope.datapoints.length; i++) { 
      console.log($scope.datapoints[i].thevalue + ","); 
      console.log($scope.datapoints[i].variant + ","); 
     } 

    }; 

正如预期的查询返回一个承诺，所以循环不执行。如何捕获，操作（使用lodash），然后将数据提供给视图？

Answer 1

如果它返回一个承诺

$scope.getDataPoints = function() { 
    Datapoints.query() 
    .then(function(response) { 
     // Don't know what this resolves with, assuming response.data is what you would want 
     $scope.datapoints = response.data; 

     console.log($scope.datapoints.length); 
     console.log($scope.datapoints); 

     for (var i = 0; i < $scope.datapoints.length; i++) { 
     console.log($scope.datapoints[i].thevalue + ","); 
     console.log($scope.datapoints[i].variant + ","); 
     } 
    }); 
}