我的界面

 
            
            
                
                    
                        
                            
                        
                        
                            发送
                        
                    
                
            
            

            
            
                
                    
                        
                        
{{message.user.name}}:
                        
{{message.content}}

                    
                

            
        
        

我的controller

atMoon.controller('roomCtrl',['$scope','myService', function ($scope, myService) {


    $scope.sendMyMessage = function () {
        console.log($scope.myMessage)
        myService.sendMyMessage($scope, $scope.myMessage)
    }
    $scope.init = function () {
        myService.getMessages($scope);
    }
}])

打印的$scope.myMessage一直是undefine,如果我在controller中写上$scope.myMessage = "xxxx"能再界面中显示，所以数据只能从模型到视图，不能从视图到模型，求大神解答万分感谢