ng-model= "model.element"不起作用

Question

今天我有一个问题，我需要添加一个值的输入与ng-model =" element"的工作，但如果我使用ng-model ="模型。元素"不再适用于我，这里的代码

<div ng-app="myApp" ng-controller="myCtrl as model">
 <input type="text" ng-cero="uno"  ng-model="c1ero">   
 <input type="text" ng-cero="dos"  ng-model="model.eae" >   
</div> 
angular
.module("myApp",[])
.controller('myCtrl', function($scope){
 var model=this;
})
.directive ('ngCero', function(){
  var linkFunction =function(scope, element, attrs){
     element.bind("keypress", function(event) {
         if(event.which === 13) {  
           scope.$apply(function(){
            scope.$eval(attrs.ngCero, {'event': event});
             scope[attrs.ngModel]="0,";
             console.log(attrs);
           });
           event.preventDefault(); 
         }
     });
  };
  return{
    controller: "myCtrl",
    link: linkFunction
  }
}) 

这里是codependency: http://codepen.io/fernandooj/pen/EgmQmJ

Answer 1

当ngModel指向嵌套属性如model.eae时，你需要解析scope[attrs.ngModel]="0,";。使用angular $parse服务来实现这个目的($parse(attrs.ngModel).assign(scope, '0, ');):

.directive ('ngCero', function($parse) {
  var linkFunction =function(scope, element, attrs) {
    element.bind("keypress", function(event) {
     if (event.which === 13) {  
       scope.$apply(function(){
        scope.$eval(attrs.ngCero, {'event': event});
         $parse(attrs.ngModel).assign(scope, '0, ');
         console.log(attrs);
       });
       event.preventDefault(); 
     }
 });
};
return {
  controller: "myCtrl",
  link: linkFunction
}
})