AngularJS与单选框及多选框的双向动态绑定

     <input type="radio" name="person-action" value="go_home" ng-model="person.action" />回家
      <input type="radio" name="person-action" value="go_to_school" ng-model="person.action"  />回学校

   <input type="checkbox" ng-true-value="true" ng-false-value="false" ng-model="phone.play_sound" />铃声
   <input type="checkbox" ng-true-value="true" ng-false-value="false" ng-model="phone.play_vibrate" />震动
   <input type="checkbox" ng-true-value="true" ng-false-value="false" ng-model="phone.play_lights" />呼吸灯

var str = "";	// 原来存放选中的项
$scope.Selected = false;	//默认未选中
var choseArr=[];	// 定义数组用于存放前端显示
$scope.check = function(z,x){
console.log("HUY:");
console.log(z);
 
console.log("HUYU:");
console.log(x);
if (x == false) { 	// 选中
            str = str + z + ',';
        } else {
            str = str.replace(z + ',', ''); // 取消选中
        }
 
        choseArr = (str.substr(0,str.length-1)).split(',');
        
 	console.log("HY:");
 	console.log(choseArr);
 
 	$scope.number_request = choseArr.length;	// 前端显示所选数量
 	$scope.content_request = choseArr;	// 前端显示所选请求ID
};

    	<tr ng-repeat="item in querydata">
    
    	<td ng-bind="$index+1">1</td>
        	<td><a ui-sref="#">{{item.postid}}</a></td>
         	<td>{{item.medname}}</td>  
         	<td>{{item.medfact}}</td> 
         	<td>{{item.medcnt}}</td>     
         	<td>{{item.remark}}</td>       
         	<td>{{item.tel}}</td>       
         	<td>{{item.post_time}}</td>
         	<td><input id={{item.postid}} type="checkbox" ng-model="Selected" ng-click="check(item.postid,Selected)" /></td>       
    	</tr>