問題映射陣列與挖空映射

我有從SIGNALR中的HUB返回的以下對象，我想將它映射到一個對象作爲視圖模型在淘汰賽中使用。問題映射陣列與挖空映射

[{"Aprover":{"CurrentTask":null,"UserID":3,"MembershipKey":"admin","Name":"admin","StartCurrentTask":null,"TotalWorkSeconds":0},"Comments":[],"Creator":{"CurrentTask":null,"UserID":3,"MembershipKey":"admin","Name":"admin","StartCurrentTask":null,"TotalWorkSeconds":0},"ParentTask":null,"Project":null,"Steps":[{"StepDescription":"sdfsdfsdfsdf","StepID":1,"IsComplete":false,"IsValidated":false}],"TaskCategory":null,"UserAssigned":{"CurrentTask":null,"UserID":3,"MembershipKey":"admin","Name":"admin","StartCurrentTask":null,"TotalWorkSeconds":0},"ID":5,"Date":null,"Priority":0,"Title":"sdfsdf","Description":"","UnitTestName":null,"Status":0,"StepsText":"sdfsdfsdfsdf\n","StatusText":"Active"},{"Aprover":{"CurrentTask":null,"UserID":3,"MembershipKey":"admin","Name":"admin","StartCurrentTask":null,"TotalWorkSeconds":0},"Comments":[],"Creator":{"CurrentTask":null,"UserID":3,"MembershipKey":"admin","Name":"admin","StartCurrentTask":null,"TotalWorkSeconds":0},"ParentTask":null,"Project":null,"Steps":[{"StepDescription":"dfgdfg","StepID":2,"IsComplete":false,"IsValidated":false}],"TaskCategory":null,"UserAssigned":{"CurrentTask":null,"UserID":3,"MembershipKey":"admin","Name":"admin","StartCurrentTask":null,"TotalWorkSeconds":0},"ID":6,"Date":null,"Priority":0,"Title":"dfdd","Description":"","UnitTestName":null,"Status":0,"StepsText":"dfgdfg\n","StatusText":"Active"}]

我使用此自動地圖：

Tasks = ko.mapping.fromJSON(res)

解析度=上述目的;

問題是無論我嘗試什麼，任務總是一個空對象，所以我沒有得到一個數組。

額外注

，如果我想的方法添加到返回的對象是什麼？換句話說，我想用自定義方法的陣列擴展像波紋管

var TaskListModel = function (data) { 
     self = this; 
     self.Items = ko.observableArray(); 
     if (data != null) { 
      ko.mapping.fromJS(data, {}, this); 
     } 

     self.selectedTask = ko.observable(null); 
     self.selectedID = ko.observable(-1); 

     self.selectTask = function (p) { 
      if (self.selectedID() == p.ID()) 
       self.selectedID(-1); //Hide on click 
      else 
       self.selectedID(p.ID()); 
      self.selectedTask(p); 
     }; //Create the select method

我試圖映射到項目歸屬，但問題依然存在，我所有的想法。

來源

2014-04-09 Morphex

看起來JSON中的換行符（\n）存在問題。我不確定它是否是映射插件或其他內容，但如果您在JSON中刪除了\n，則映射插件可以正常工作。我檢查：

var tasks = ko.mapping.fromJSON(res); 
alert(tasks().length);

記住的任務將是一個observableArray所以你要「執行」它讓底層的數組，如果你要檢查它。

下面是使用JSON的一個完整的例子，但沒有換行：

http://jsfiddle.net/psteele/dKK55/

來源

2014-04-09 11:54:29 PatrickSteele

奇怪，因爲我沒有更改服務器代碼，並奇蹟般地它採空工作。令人驚歎的答案謝謝！ – Morphex

問題映射陣列與挖空映射

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