javascript - 如何从指令更新 $scope 值

Question

我是一个动态循环的创意指令。其中每个输入名称都是动态创建的。同样，我想根据问题更新范围值。 $scope 对象名称应该是动态的。像 $scope.answers.xxx其中 xxx 是问题名称。
$scope.question 有所有问题
并希望在 $scope.answers 中维护答案。

指令函数

function textControlDir()
{
    return {
        transclude: true,
        restrict: 'E',
        /*scope: {
            queObj: '=',
            selectedAns: '='
        },*/
        template: '<div class="form-group">\n\
            <label for="{{queObj._attributeName}}" class="col-sm-5 control-label">{{queObj._text}}</label>\n\
            <div class="col-sm-6"><input type="text" name="{{name}}" class="form-control" id="{{id}}" value="{{selectedAns}}"></div>\n\
        </div>',
        link: function (scope, element, attrs)
        {
            var queObj = scope.que.QuestionData;
            scope.queObj = scope.que.QuestionData; 
            scope.name = queObj._attributeName;
            scope.id = queObj._attributeName;
            var selectedAns = '';
            if(scope.answers)
            {
                selectedAns = scope.answers[scope.name];
            }
            if(selectedAns && selectedAns != '')
            {
                scope.selectedAns = selectedAns;
            }
            else
            {
                scope.selectedAns = scope.queObj._pageAttributes.defaultValue;
            } 
        }
    };
}

HTML

<div ng-repeat="que in questions[$state.current.name]">
    <div ng-if="que.QuestionData._fieldType === 'text'" >
        <text-control-dir data-que-obj="que.QuestionData" ></text-control-dir>
    </div>  
    <div ng-if="que.QuestionData._fieldType === 'select'" >
        <select-control-dir data="que.QuestionData"></select-control-dir>
    </div>
    <div ng-if="que.QuestionData._fieldType === 'radio'" >
        <radio-control-dir data="que.QuestionData"></radio-control-dir>
    </div>
    <div ng-if="que.QuestionData._fieldType === 'hidden' && que.QuestionData._attributeName != 'CBQ'" >
        <hidden-control-dir data="que.QuestionData"></hidden-control-dir>
    </div>
</div>

为完整代码创建了plunker http://plnkr.co/edit/Op1QDwUBECAosPUC7r3N?p=preview

Answer 1

如果没有 scope.$apply 或 ngModelController，则无法从链接函数更新作用域

<div ng-repeat="que in questions[$state.current.name]">
    <div ng-if="que.QuestionData._fieldType === 'text'" >
        <input type="text" data-ng-model="que.QuestionData.Answer">
    </div>  
</div>


var app = angular.module("app",[]);

var ctrlFn = function(){
$scope.questions = questions;\\assign scope here

};
var ctrl = app.contoller('ctrl',ctrlFn);

ctrlFn.$inject = ['$scope'];