为什么我的 POST 返回 [object Object]

Question

I'm new in Angular js and I don't know if my POST is working. It returns an [object Object]! What kind of error this? I mean if POST is working is there something wrong with the form?

//Activity controller
.controller('ActivityCtrl', function($scope, $rootScope, $state, $ionicLoading, $ionicScrollDelegate, PostService, $http, AuthService) {
    var user = AuthService.getUser();
    $http.get("http://hannation.me/api/buddypressread/activity_get_activities_grouped/?userid=" + user.data.id)
    .success(function(data) {
      $scope.activities = data.activities;
    });



  $scope.addActivity = function(){    
    //    
    var dataObj = {
        new_activity : $scope.new_activity
    };  
    $http.post('http://hannation.me/api/userplus/activities_post_update/?key=57f211a0354d7&cookie=' 
      + user.cookie + '&content=' + dataObj).success(function(data, status, headers, config) {
      $scope.message = data;
    });

    $scope.new_activity='';
  };
})

 <form  class="row">
      <div class="col col-80 content col-center">
        <input class="new-comment-message" type="text" placeholder="Leave a comment..." ng-model="new_activity"
         name="new_activity"></input>
      </div>
      <div class="col col-20 button-container col-center">
        <button class="button button-clear send" type="submit" ng-click="addActivity()">
          Send
        </button>
      </div>
    </form>

Answer 1

First, and mainly because this really bugs me... use the params property for query parameters and don't use the deprecated success method. Using params ensures your query parameters are sanitised for use in a URL (see encodeURIComponent() ).

$http.get('http://hannation.me/api/buddypressread/activity_get_activities_grouped/', {
    params: { userid: user.data.id }
}).then(function(response) {
    $scope.activities = response.data.activities;
});

Secondly, this documentation (which I assume is correct) indicates you should be using a GET request, not POST and content appears to be a string so your second request should look like

$http.get('http://hannation.me/api/userplus/activities_post_update/', {
    params: {
        key: '57f211a0354d7',
        cookie: user.cookie,
        content: $scope.new_activity
    }
}).then(function(response) {
    // not sure about this, the documentation doesn't indicate there's a response
    console.log('response data', response.data);
});

Answer 2

Answer lie within your question. You are signing object to your message you should do like this

 $http.post('http://hannation.me/api/userplus/activities_post_update/?key=57f211a0354d7&cookie=' 
  + user.cookie + '&content=' + dataObj).success(function(data, status, headers, config) {
  $scope.message = data.message;
});

Here i have assigned one of the value that i am getting from post request. To know what are the values lie within your response object, console your response object and assign appropriate value to your $scope.message.