AngularJS - 无法在范围总结性

Question

我有以下的角码坐在一个角度控制器：

CODE：

$scope.orangeCrate.italian = { 
    "description": "Annual", 
    "payer": "farmer", 
    "farmerCost": 0, 
    "ownerCost": 21 
}; 

$scope.orangeCrate.portugal = { 
    "description": "Annual", 
    "payer": "owner", 
    "farmerCost": 6.5, 
    "ownerCost": 0 
}; 

$scope.orangeCrate.total = { 
    "farmerCost": $scope.orangeCrate.italian.farmerCost + $scope.orangeCrate.portugal.farmerCost, 
    "ownerCost": $scope.orangeCrate.italian.ownerCost + $scope.orangeCrate.portugal.ownerCost, 
}; 

当我尝试并打印出里面的值$scope.orangeCrate.total.farmerCost根据我的观点，我什么也没得到，即使我应该得到6.5！

我在做什么错？任何帮助将不胜感激。

谢谢。

Answer 1

像这样的东西会做（对不起，“穷人” answer..I'm着急）：

$scope.orangeCrate = { 
    "italian": { 
     "description": "Annual", 
      "payer": "farmer", 
      "farmerCost": 0, 
      "ownerCost": 21 
    }, 
     "portugal": { 
     "description": "Annual", 
      "payer": "owner", 
      "farmerCost": 6.5, 
      "ownerCost": 0 
    } 
}; 
$scope.orangeCrate.total = { 
    "farmerCost": $scope.orangeCrate.italian.farmerCost + $scope.orangeCrate.portugal.farmerCost, 
     "ownerCost": $scope.orangeCrate.italian.ownerCost + $scope.orangeCrate.portugal.ownerCost, 
};