扩展与淘汰赛映射

Question

子对象考虑这个JSON对象：

{ 
    "BusinessModels":[ 
     { 
      "Id":1, 
      "Name":"Business to Business", 
      "Businesses":[], 
      "ReportTypes":[ 
       {...}, 
       {...}, 
       { 
        "Id":6, 
        "Name":"Risk", 
        "BusinessModelId":1, 
        "Reports":[ 
         { 
          "Id": 4, 
          "Name": "Test", 
          "Value": ko.observable() // NEED TO ADD THIS PROPERTY USING MAPPING 
         }, 
         {...} 
        ] 
       } 
      ], 
     } 
    ] 
} 

我尝试添加使用下面的代码的价值，但它似乎并没有工作。

var mapping = { 
    'BusinessModels': { 
     create: function(options) { 
      return new function() { 
       var self = options.data; 
       self.SelectedBusiness = ko.observable(); 
       self.Businesses.unshift({ Id: 0, Name: 'All Clients' }); 
       ko.mapping.fromJS(self, {}, this); 
      }; 
     } 
    }, 
    'Reports': { 
     create: function (options) { 
      return new function() { 
       var self = options.data; 
       self.Value = ko.observable(); 
       ko.mapping.fromJS(options.data, {}, this); 
      }; 
     } 
    } 
}; 

var model = ko.mapping.fromJSON(raw, mapping); 
ko.applyBindings(model); 

我需要给子对象“报告”评为Value一个ko.observable对象。我如何去做这个在ko.mapping？

Answer 1

好吧，那很快。我想出了答案。

var mapping = { 
    'BusinessModels': { 
     create: function (options) { 
      return new function() { 
       var self = options.data; 
       self.SelectedBusiness = ko.observable(); 
       self.Businesses.unshift({ Id: 0, Name: 'All Clients' }); 
       ko.mapping.fromJS(self, mapping, this); 
      }; 
     } 
    }, 
    'Reports': { 
     create: function (options) { 
      return new function() { 
       var self = options.data; 
       self.Value = ko.observable(); 
       ko.mapping.fromJS(self, mapping, this); 
      }; 
     } 
    } 
}; 

而不是使用ko.mapping.fromJS(self, {}, this)我用ko.mapping.fromJS(self, mapping, this)。原因是因为Reports是BusinessModels的嵌套对象。