（關於使用Knockout插件）如何綁定子對象數組作爲observablearray父對象observablearray

我是相當新的淘汰賽插件，我試圖用這個插件建立一個commentthread。我有一些問題，當一個子註釋綁定到父註釋時，期望的json字符串化對象應該是下面的一些東西;（關於使用Knockout插件）如何綁定子對象數組作爲observablearray父對象observablearray

[ 
    { 
    CreatedBy: "user 1", 
    CreatedOn: Date(), 
    Description: "comment 1", 
    ChildFeeds: [ 
       { 
        CreatedBy: "user 2", 
        CreatedOn: Date(), 
        Description: "comment 1-1" 
       }, 
       { 
        CreatedBy: "user 3", 
        CreatedOn: Date(), 
        Description: "comment 1-2" 
       }, 
       { 
        CreatedBy: "user 4", 
        CreatedOn: Date(), 
        Description: "comment 1-3" 
       } 
       ] 
    }, 
    { 
    CreatedBy: "user 5", 
    CreatedOn: Date(), 
    Description: "comment 2", 
    ChildFeeds: [ 
       { 
        CreatedBy: "user 6", 
        CreatedOn: Date(), 
        Description: "comment 2-1" 
       }, 
       { 
        CreatedBy: "user 7", 
        CreatedOn: Date(), 
        Description: "comment 2-2" 
       } 
       ] 
    }, 
]

但是當我運行的代碼獲取下面的數據，而不是上述的結構。

[ 
    { 
    "CreatedBy": "user 1", 
    "CreatedOn": "Mon Jan 02 2012 15:50:51 GMT+0200 (Turkey Standard Time)", 
    "Description": "comment 1", 
    "ChildFeeds": [ 
     { 
     "ChildFeeds": [ 
      { 
      "CreatedBy": "user 2", 
      "CreatedOn": "Mon Jan 02 2012 15:50:51 GMT+0200 (Turkey Standard Time)", 
      "Description": "comment 1-1" 
      }, 
      { 
      "CreatedBy": "user 3", 
      "CreatedOn": "Mon Jan 02 2012 15:50:51 GMT+0200 (Turkey Standard Time)", 
      "Description": "comment 1-2" 
      }, 
      { 
      "CreatedBy": "user 4", 
      "CreatedOn": "Mon Jan 02 2012 15:50:51 GMT+0200 (Turkey Standard Time)", 
      "Description": "comment 1-3" 
      } 
     ] 
     } 
    ] 
    }, 
    { 
    "CreatedBy": "user 5", 
    "CreatedOn": "Mon Jan 02 2012 15:50:51 GMT+0200 (Turkey Standard Time)", 
    "Description": "comment 2", 
    "ChildFeeds": [ 
     { 
     "ChildFeeds": [ 
      { 
      "CreatedBy": "user 6", 
      "CreatedOn": "Mon Jan 02 2012 15:50:51 GMT+0200 (Turkey Standard Time)", 
      "Description": "comment 2-1" 
      }, 
      { 
      "CreatedBy": "user 7", 
      "CreatedOn": "Mon Jan 02 2012 15:50:51 GMT+0200 (Turkey Standard Time)", 
      "Description": "comment 2-2" 
      } 
     ] 
     } 
    ] 
    } 
]

在這裏你會發現，因爲錯誤編碼的，不幸的是我複製ChildFeeds對象數組兩次，每次父對象..你可以從這裏http://jsfiddle.net/6qAmu/5/

發現代碼什麼是最好的方法實現這個問題？

感謝

來源

2012-01-02 salihozkul

現在你ChildFeedModel是包含ChildFeeds observableArray一個對象，所以當你將這個到ChildFeeds財產上的wallfeedsmodel，你最終與雙ChildFeeds。

一種選擇是讓您的ChildFeedsModel實際上是observableArray。所以，你可以創建一個observableArray，用任何附加的方法/屬性擴展它，然後返回它。

喜歡的東西：

var childFeedModel = function(ChildFeeds) { 
    var result = ko.observableArray(); 

    result.addChildFeed = function(tempChildFeed) { 

     result.push({ 
      CreatedBy: tempChildFeed.CreatedBy, 
      CreatedOn: tempChildFeed.CreatedOn, 
      Description: tempChildFeed.Description 
     }); 
    }; 

    ko.utils.arrayForEach(ChildFeeds, function(feed) { 
     result.addChildFeed(feed); 
    }); 

    return result; 
};

我改變了它開始與小寫字母，因爲創建一個（它總是返回一個新的observableArray）時，它現在不需要new聲明。現在

，在你wallfeedsmodel你只需給它分配喜歡：

return { 
     CreatedBy: singlefeed.CreatedBy, 
     CreatedOn: singlefeed.CreatedOn, 
     Description: singlefeed.Description, 
     ChildFeeds: childFeedModel(singlefeed.ChildFeeds) 
    };

樣品在這裏：http://jsfiddle.net/rniemeyer/xAKK5/

來源

2012-01-02 14:48:24

這是偉大的太感謝你了 – salihozkul 2012-01-02 14:56:34

（關於使用Knockout插件）如何綁定子對象數組作爲observablearray父對象observablearray

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