Google App Engine Channel API中的simplejson dumps

Question

我正在尝试在我的 Google App Engine django-nonrel 项目中使用 Channel API。根据我目前的需求，我想把所有在某个页面（比如 group_mainpage.html）的用户列表发送给同样在这个页面的其他用户。换句话说，如果我们两个都在这个页面上，我们都能在页面的某个角落看到彼此的名字。一旦用户离开这个页面，他们的名字就应该从列表中移除。但是我没有正确地生成 JSON 数据并显示出来。到目前为止，我是这样做的，但它没有成功：

group_mainpage.html

<html>
    <head>
    </head>
    <body>
        <div id="channel_api_params" style="display:none;" chat_token="{{chat_token}}" channel_id="{{channel_id}}"></div>
        <div align="center"><font size="5" color="blue">Welcome To Group Main Page</font><br><br>
        </div>
        <div align="center">
            <form method="POST" action="/group_start/">
                <input type='submit' value="Start">
            </form>
            <div id="mydiv">
            {% include 'user_list.html' %}
            </div>
        </div>
        <script type="text/javascript" src="/media/jquery.js"></script>
        <script type="text/javascript" src="/_ah/channel/jsapi"></script>
        <script type="text/javascript">
        $(document).ready(function(){
            $(window).load(function(){
                var channel_id = $('#channel_api_params').attr('channel_id');
                $.ajax({
                    url: '/valid_group_users/',
                    type: 'GET',
                    data:{
                        'channel_id':channel_id,
                    },
                    success: function(current_user){
                    },
                    complete: function(){
                    }
                });

                var chat_token = $('#channel_api_params').attr('chat_token');
                var channel = new goog.appengine.Channel(chat_token);
                var socket = channel.open();
                socket.onopen = function(){
                };
                socket.onmessage = function(m){
                    var data = $.parseJSON(m.data);
                    $('#mydiv').append(data['post_element']);
                };
                socket.onerror =  function(err){
                    alert("Error => "+err.description);
                };
                socket.onclose =  function(){
                    alert("channel closed");
                };

            });
        });
        </script>
    </body>
</html>

views.py

def valid_group_users(request):
    channel_id=request.GET['channel_id']

    group_initialise=Group_initialise()
    group_initialise.channel_id=channel_id
    group_initialise.user_name=request.user
    group_initialise.save()

    try:
        data=Group_initialise.objects.all()
    except:
        pass

#As per the suggestions of Kevin:
user_list=[]
for result in data:
    user_list.append(result.user_name)
    template_values={'user_list':user_list}
temp_result={'post_element':render_to_response("user_list.html",template_values)}

channel_msg=simplejson.dumps(temp_result)

for result in data:
    if result.user_name!=request.user:
        channel.send_message(result.channel_id,channel_msg)

user_list.html

{% for users in user_list %}
    <div class="message">
        <span>
            {{users}}:
        </span>
    </div>
{% endfor %}

EDIT:

temp_result=str(temp_result)
#To remove Http-Header/content-type copy string after 40 characters
temp_result=temp_result[40:]
#Replace colon attaching automatically at the end of every user_name
temp_result=temp_result.replace(':','')
channel_msg=simplejson.dumps(temp_result)

django google app engine json real-time communication dynamic content web sockets channel api user presence

Google App Engine Channel API中的simplejson dumps

group_mainpage.html

views.py

user_list.html

EDIT:

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