$范围。$腕表不叫，而模式发生了变化

Question

时vm.loadStats被称为

var vm = this; 

vm.loadStats = function(){ 
    vm.propositions = null; 
    DateUtils.convertLocalDateToServer(vm.dateDebut); 
    vm.dateFinSever = DateUtils.convertLocalDateToServer(vm.dateDebut); 
    vm.propositions = PropositionsAffaireBetweenPropositionDates.get({dateDebut :  vm.dateDebutServer, dateFin : vm.dateFinSever}); 
} 


$scope.$watch(['vm.propositions'], function(newValues, oldValues) { 
... 
} 

如果有谁知道为什么我的$范围。$腕表则不会触发...
感谢

Answer 1

角$范围对象有三个$手表方法：

• $手表，走字符串或函数

• $ watchGroup，以表达阵列

• $ watchCollection，拍摄物体

您应该使用$scope.$watch('vm.propositions', ...);或$scope.$watchGroup(['vm.propositions'], ...);

AngularJS Documentation on $scope

Answer 2

没有错代码...这是一个小修复

//Note how I dropped "vm." prefix? its redundant because the strings you provide 
//inside the array are translated into $scope.[yourScopedVariable] 
$scope.$watch(['propositions'], function(newValues, oldValues) { 
... 
}