AngularJS-重复项更新父项

我有一个包含4个答案的问题。答案在一个带有ng click绑定的中继器中，该绑定将答案设置为answered=true，但我还想将父问题设置为answered=true

$scope.questions = [{
    "text": "1111What do you think of this asdf asdf asdf asdf sdf asdf as?",
    "answers":[
        {text:"answer 1", answered:false},
        {text:"answer 2", answered:false},
        {text:"answer 3", answered:false},
        {text:"answer 4", answered:false}],
    "answered": false
},{
    "text": "22What do you think of this asdf asdf asdf asdf sdf asdf as?",
    "answers":[
        {text:"answer 21", answered:false},
        {text:"answer 22", answered:false},
        {text:"answer 23", answered:false},
        {text:"answer 24", answered:false}],
    "answered": false
}];
$scope.registerAnswer = function(){
   if (this.answer) {
       this.answer.answered = true;
       this.answer.$parent.$parent.answered = true;
   }
};

// html::
<button ng-click=registerAnswer()></button>

$scope.questions=[{
“文本”：“1111您认为这个asdf asdf asdf asdf sdf asdf是什么？”，
“答案”：[
{文本：“答案1”，回答：假}，
{文本：“答案2”，回答：假}，
{文本：“答案3”，回答：假}，
{文本：“答案4”，回答：假}，
回答：错
},{
“文本”：“22您认为这个asdf asdf asdf asdf sdf asdf是什么？”，
“答案”：[
{文本：“回答21”，回答：假}，
{文本：“答案22”，回答：假}，
{文本：“回答23”，回答：假}，
{文本：“回答24”，回答：假}，
回答：错
}];
$scope.registerAnswer=函数（）{
如果（这个答案）{
this.answer.answered=true；
this.answer.$parent.$parent.answered=true；
}
};
//html:：

如何让孩子更新其家长

谢谢，

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斯科特，你似乎把事情弄得比应该的复杂多了。只用

ng-click="registerAnswer(answer, question)"

并将registerAnswer函数定义为

$scope.registerAnswer = function(answer, question) {
    answer.answered = true;
    question.answered = true;
}

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啊！谢谢你。