Angularjs用输入无线电ngModel设置ngModel

Question

谁知道为什么不起作用？

我想在我的单选按钮上设置一个带有ngModel的ngModel值。

这就是一个例子，jsFiddle

    <form  name="pageTwoForm">
        <h3>General Information > Knowledge About </h3>
        <div>
        <b>User</b>
            <div ng-repeat="option in userOptions">
                <input type="radio" ng-model="knowledgeAboutUser" ng-value="option.id" />{{option.text}}
            </div>

<b>Target Group</b>
            <div ng-repeat="option in targetGroupUserOptions">
                <input type="radio" ng-model="$parent.knowledgeAboutTargetGroup" ng-value="option.id" />
                {{option.text}}
            </div>
    </div>
</form>
    <h3 >{{knowledgeAboutTargetGroup}}</h3>
    <h3 >{{knowledgeAboutUser}}</h3> 

Answer 1

我解决了

    <form  name="pageTwoForm">
        <h3>General Information > Knowledge About </h3>
        <div>
        <b>User</b>
            <div ng-repeat="option in userOptions">
                <input type="radio" ng-model="data.knowledgeAboutUser" ng-value="option.id" />{{option.text}}
            </div>

<b>Target Group</b>
            <div ng-repeat="option in targetGroupUserOptions">
                <input type="radio" ng-model="data.knowledgeAboutTargetGroup" ng-value="option.id" />
                {{option.text}}
            </div>
    </div>
</form>
    <h3 >{{data.knowledgeAboutTargetGroup}}</h3>
    <h3 >{{data.knowledgeAboutUser}}</h3> 

我不知道为什么，但如果我用

data.knowledgeAboutUser

不仅仅是

knowledgeAboutUser