Question

我在循环中动态创建指令。其中每个输入名称动态创建。在同一个我想根据问题更新范围值。 $ scope对象名称应该是动态的。比如$ scope.answers.xxx 其中xxx是问题名称。
$ scope.question都有问题并希望在$ scope.answers中维护答案。

指令功能

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

，则无法通过链接功能进行范围更新

<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'];

Answer 2

使用：

$scope.answers[questionName] = data;

如何更新指令的$ scope值

2 个答案: