anjularjs将值推送到嵌套的ng-repeat

<div ng-repeat="vehicle in vehicleList">  <div>{{vehicle.number}}</div>  <input name="addName" value="add" ng-click="addVehicle($index, vehicle)">  <div ng-repeat="categoryList in vehicle.category">    <div>{{categoryList.name}}</div>  </div></div>$scope.vehicleList = [];$scope.addVehicle = function(index, vehicle) { $scope.vehicleList[index].category.push({   name: vehicle });};