控制器和指令双向绑定了值。{{data}}页面可以显示出来。但是提交的时候获取不到解决办法

<div ng-show="isBindDevices">
    <bind-devices  tenant-id="{{tenantId}}" user-info="{{userInfo}}" service-id="{{newVpnData.serviceName}}" bind-device-data="$parent.bindDeviceData" show-hub="true" read-idle="true" carrier-type="{{newVpnData.carrierType}}"></bind-devices>
</div>

return {
    restrict: 'E',
    replace: true,
    templateUrl: 'file:///android_asset/www/templates/directives/bindDevices.tpl.html',
    scope: {
        tenantId: "@",
        serviceId: "@",
        showHub:"@",
        bindDeviceData:"=bindDeviceData",
        readIdle:"@",
        carrierType:"@",
        userInfo:"@"
    },