Question

我正在跟踪用户点击应用中的社交按钮的次数。我想每天只给他们一次点击。我目前通过社交平台过滤点击次数，但我无法弄清楚如何按天分组，每天只计算1次。以下是我目前的代码：

控制器：

Data.get('stats/'+$scope.uid).then(function(data){
    $scope.stats = data.data;

    // determine if the user has any stats
    $scope.hasStats = $scope.stats.length;

    $scope.topUsersObjects = $filter('filter')($scope.stats, { 
        action: "completed" 
    });
    $scope.facebookObjects = $filter('filter')($scope.stats, { 
        platform: "facebook", 
        action: "completed" 
    });
    $scope.twitterObjects = $filter('filter')($scope.stats, { 
        platform: "twitter", 
        action: "completed" 
    });
    $scope.facebookClickedObjects = $filter('filter')($scope.stats, { 
        platform: "facebook", 
        action: "clicked" 
    });
    $scope.twitterClickedObjects = $filter('filter')($scope.stats, { 
        platform: "twitter", 
        action: "clicked" 
    });

    $scope.labels = ["Facebook", "Twitter", "Clicked"];

    var totalClicked = $scope.facebookClickedObjects.length + $scope.twitterClickedObjects.length;
    $scope.data = [$scope.facebookObjects.length, $scope.twitterClickedObjects.length, totalClicked];
});

UPDATE（示例$ scope.stats）：

Object

action:"clicked ls"
guid:"1200041"
id:"52"
platform:"facebook"
timeclicked:"2015-10-12 21:46:26"
uid:"44043077e53d"

非常感谢任何帮助。

最终更新的答案：

谢谢你@William-b你的回答是有效的，我最后这样做了。如果这不是一个好方法，请告诉我。谢谢大家的帮助。

// facebook group by days, completed
$scope.facebookGroupByDay = _.groupBy($scope.facebookObjects, function(item) {
    return item.timeclicked.substring(0,10);
});

// get the number of days with a completed post
$scope.fbCount = Object.keys($scope.facebookGroupByDay);

 // twitter group by days, clicked 
 $scope.twitterGroupByDay = _.groupBy($scope.twitterClickedObjects, function(item) {
     return item.timeclicked.substring(0,10);
 });

 // get the number of days with a clicked tweet
 $scope.twCount = Object.keys($scope.twitterGroupByDay);

Answer 1

听起来您希望reduce点击一系列点击次数。

var days = {}; // let's keep track of days clicked here during the reduction

var clicksByDay = $scope.stats.reduce(function (clickCount, stat) {
  var day = stat.timeclicked.split(' ')[0];
  if (!days[day]) {
    // we didnt count this day yet
    clickCount++;
    days[day] = true; // mark this day as counted
  }
  return clickCount;
}, 0);

如果$ scope.stats看起来像这样：

[ 
  { timeclicked: '2015-10-12 12:34:56' },  
  { timeclicked: '2015-10-12 21:46:26'},  
  { timeclicked: '2015-10-13 21:46:26' }  
]

然后clicksByDay在这种情况下为2。

P.S。如果在多个控制器的模板中需要它，那么就没有什么能阻止你为这种类型的减少定义自己的角度过滤器。

角度过滤器，按日期分组

1 个答案: