创建更新ng-model的angular-js指令

Question

我正在尝试创建一个包装twitter typeahead插件的指令.到目前为止我所拥有的是:

HTML:

<input ng-twitter-typeahead type="text" ng-model="participant" data="exampleData" />
{{ participant }}

我想要在typeahead上选择某些内容时更新'参与者'的值.预先输入本身正常,但我无法捕获所选值.以下是javascript:

var app = angular.module('myApp', [])
app.directive('ngTwitterTypeahead', function () {
  return {
    restrict: 'EA',
    scope: {
      data: '='
    },
    link: function ($scope, $element, $attrs) {
      $element.typeahead($scope.data);

      $element.bind('typeahead:selected', function(obj, datum) {        
         // I really don't know how to do this part
         // the variable 'datum' is what I want to be passed to ng-model
         // I tried things like:
            // Including the ngModelController and typing:
            // ngModel.$setViewValue(datum)
            // but that didn't work.
     }
  };
});

在AngularJS方面,我显然缺少一些基本的东西.任何帮助将不胜感激!

编辑**

我找到了解决方案.我有时无能为力:

angular.module('siyfion.ngTypeahead', [])
  .directive('ngTypeahead', function () {
    return {
    restrict: 'C',
    scope: {
      datasets: '=',
  ngModel: '='
    },
    link: function ($scope, $element, $attrs) {
      $element.typeahead($scope.datasets);      

      $element.bind('typeahead:selected', function(obj, datum) {        
    $scope.$apply(function() {
     $scope.ngModel = datum;
    });
  })            
    }
  };
});

Answer 1

您可以ngModel在指令中要求控制器.它将使您可以访问link函数内部的模型控制器,请参阅http://docs.angularjs.org/api/ng.directive:ngModel.NgModelController

在这里你可以找到一个如何使用现实生活的例子http://suhairhassan.com/2013/05/01/getting-started-with-angularjs-directive.html#.UhSdDOZdXUE