knockout.js - 淘汰js分组初始json并分列显示

Question

在我的示例中，我需要按项目分组，然后按天显示数据。

请参阅http://jsfiddle.net/3M7QD/2/

我想显示如下：

项目 1 SundayHours MondayHours ...

项目 2 SundayHours MondayHours ...

    var json =  [
    {
      "HOURS": 0,
      "PROJECT_NAME": "Project 1",
      "DATE_WORKED": "/Date(1353225600000)/"
    },
    {
      "HOURS": 0,
      "PROJECT_NAME": "Project 2",
      "DATE_WORKED": "/Date(1353225600000)/"
    },
    {
      "HOURS": 8.5,
      "PROJECT_NAME": "Project 1",
      "DATE_WORKED": "/Date(1353312000000)/"
    },
    {
      "HOURS": 0,
      "PROJECT_NAME": "Project 2",
      "DATE_WORKED": "/Date(1353312000000)/"
    },
    {
      "HOURS": 8,
      "PROJECT_NAME": "Project 1",
      "DATE_WORKED": "/Date(1353398400000)/"
    },
    {
      "HOURS": 0,
      "PROJECT_NAME": "Project 2",
      "DATE_WORKED": "/Date(1353398400000)/"
    },
    {
      "HOURS": 8.5,
      "PROJECT_NAME": "Project 1",
      "DATE_WORKED": "/Date(1353484800000)/"
    },
    {
      "HOURS": 0,
      "PROJECT_NAME": "Project 2",
      "DATE_WORKED": "/Date(1353484800000)/"
    },
    {
      "HOURS": 4,
      "PROJECT_NAME": "Project 1",
      "DATE_WORKED": "/Date(1353571200000)/"
    },
    {
      "HOURS": 4,
      "PROJECT_NAME": "Project 2",
      "DATE_WORKED": "/Date(1353571200000)/"
    },
    {
      "HOURS": 4,
      "PROJECT_NAME": "Project 1",
      "DATE_WORKED": "/Date(1353657600000)/"
    },
    {
      "HOURS": 4,
      "PROJECT_NAME": "Project 2",
      "DATE_WORKED": "/Date(1353657600000)/"
    },
    {
      "HOURS": 0,
      "PROJECT_NAME": "Project 1",
      "DATE_WORKED": "/Date(1353744000000)/"
    },
    {
      "HOURS": 0,
      "PROJECT_NAME": "Project 2",
      "DATE_WORKED": "/Date(1353744000000)/"
    }
];

var Project = function(data){
    this.PROJECT_NAME = ko.observable(data.PROJECT_NAME);
    this.HOURS = ko.observable(data.HOURS);
};

var ProjectRowItem = function(data){
    this.PROJECT_NAME = ko.observable(data.PROJECT_NAME);    
    this.SundayProjectEntry = new Project(data);
    this.MondayProjectEntry = new Project(data);
    this.TuesdayProjectEntry = new Project(data);
    this.WednesdayProjectEntry = new Project(data);
    this.ThursdayProjectEntry = new Project(data);
    this.FridayProjectEntry = new Project(data);
    this.SaturdayProjectEntry = new Project(data);
};


var viewModel = {
    Projects : ko.observableArray(ko.utils.arrayMap(json, function(item){
         return new ProjectRowItem(item);            
    })),
    NewProjectName : ko.observable()
};

viewModel.addRow = function()
{
    var data = { 
        PROJECT_NAME : viewModel.NewProjectName(),
        HOURS : "0"
    };

    viewModel.Projects.push(new ProjectRowItem(data));          
}

viewModel.removeRow = function(project)
{    
    viewModel.Projects.remove(project);          
}   


ko.applyBindings(viewModel);

​</p>

编辑 1 - 我想做的是按项目对数据进行分组，然后在列中显示该项目的每个数组项。