如何对循环中的函数调用后返回的值进行排序？

Question

我在视图中循环一个对象并调用一个将其成员作为参数的函数。

函数returns每次调用函数时我都会得到一个值。

我想按返回值排序。

但我的问题是，该值是在函数调用后返回的，我无法将这些值存储在数组中以便进行排序。

    <div ng-repeat="member in current_project.members | orderBy : '?'"> 
     <span class="taskCompletionEst">
       Estimated time: 
             {{estimatedTimeSum(selected_date, member.id)}} hrs
     </span>

控制器

      $scope.estimatedTimeSum = function(date, member_id) {
       sum = 0
       angular.forEach($scope.projects[0].tasks[date], function(task, 
       projectname) {
        angular.forEach(task, function(value, key) {
         if (value["user_id"] == member_id) {
          if (value["completion"] != undefined) {
           sum += parseInt(value["estimation"])
          } 
         else {
          sum += parseInt(value["estimated_time"])
         }
        }
      });
    });
  return sum
 }

我需要按预计时间总和排序。

Answer 1

<div ng-repeat="member in current_project.members | orderBy:'modelProperty'"> 
 <span class="taskCompletionEst">
   Estimated time: 
         {{estimatedTimeSum(selected_date, member.id)}} hrs
 </span>

Answer 2

您可以先在控制器中准备预估时间列表。然后按顺序显示列表。

Answer 3

您应该将 estimatedTimeSum 函数包装到中间 sort 函数中，该函数将传递给 orderBy 过滤器：

angular.module('app', []).controller('ctrl', function($scope) {
  $scope.current_project = {
    members: [{
      id: 10
    }, {
      id: 250
    }, {
      id: 300
    }, {
      id: 150
    }, {
      id: 70
    }, {
      id: 800
    }]
  }; 

  $scope.sort = function(date) {
    return function(member){            
      return $scope.estimatedTimeSum(date, member.id);
    }    
  }

  $scope.estimatedTimeSum = function(date, member_id) {
    //only to  stub
    return member_id % (date || 1);
  }
})

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

<div ng-app='app' ng-controller='ctrl'>
  <input type='number' ng-model='selected_date' ng-init='selected_date = 11'/>
  <div ng-repeat="member in current_project.members | orderBy : sort(selected_date)">
    <span class="taskCompletionEst">
       {{member.id}} Estimated time: {{estimatedTimeSum(selected_date, member.id)}} hrs
     </span>
  </div>
</div>

如何对循环中的函数调用后返回的值进行排序？

How to orderBy a value returned after function call which is in loop?

angularjs

angularjs-orderby