title: A simple ajax request post empty
body: <p>I have a simple ajax post request. The request is sent. But why when I print request.POST in views.py, it says that: <code>request.POST:  &lt;QueryDict: {}&gt;</code>.</p>
  
  <pre><code>if (start &lt;= end) {
     // fire a request to /tryit
         var args = {
         type: "POST",
         url: "/tryit/",
         data: {'x':x1, 'y': y1},
         error: function() {
            console.log("Error occurs");
         },
         success: function() {
            console.log("save_modification works");
         },
         complete:done
      };
      $.ajax(args);
      alert("ajax request is sent");
  } 
  </code></pre>
  
  <p>In views.py, </p>
  
  <pre><code>def tryit(request):
      print "request: ", request
  </code></pre>
  
  <p>Here is the output when I print request information. The output is included as below.</p>
  
  <pre><code>[Wed Nov 14 14:50:44 2012] [error] post request:  &lt;WSGIRequest
  [Wed Nov 14 14:50:44 2012] [error] path:/tryit/,
  [Wed Nov 14 14:50:44 2012] [error] GET:&lt;QueryDict: {}&gt;,
  [Wed Nov 14 14:50:44 2012] [error] POST:&lt;QueryDict: {}&gt;,
  [Wed Nov 14 14:50:44 2012] [error] COOKIES:{'sessionid': 'f997a4c4ba0f576fe11141e0c0dcd38
   d'},
  [Wed Nov 14 14:50:44 2012] [error] META:{'CONTENT_LENGTH': '128',
  [Wed Nov 14 14:50:44 2012] [error]  'CONTENT_TYPE': 'application/x-www-form-urlencoded',
  [Wed Nov 14 14:50:44 2012] [error]  'DOCUMENT_ROOT': '/var/www',
  [Wed Nov 14 14:50:44 2012] [error]  'GATEWAY_INTERFACE': 'CGI/1.1',
  [Wed Nov 14 14:50:44 2012] [error]  'HTTP_ACCEPT': '*/*',
  [Wed Nov 14 14:50:44 2012] [error]  'HTTP_ACCEPT_ENCODING': 'gzip, deflate',
  [Wed Nov 14 14:50:44 2012] [error]  'HTTP_ACCEPT_LANGUAGE': 'en-ca',
  [Wed Nov 14 14:50:44 2012] [error]  'HTTP_CONNECTION': 'Keep-Alive',
  [Wed Nov 14 14:50:44 2012] [error]  'HTTP_COOKIE': 'sessionid=f997a4c4ba0f576fe11141e0c0d
  cd38d',
  [Wed Nov 14 14:50:44 2012] [error]  'HTTP_PRAGMA': 'no-cache',
  
  [Wed Nov 14 14:50:44 2012] [error]  'HTTP_USER_AGENT': 'Mozilla/5.0 (compatible; MSIE 9.0
  ; Windows NT 6.0; Trident/5.0)',
  [Wed Nov 14 14:50:44 2012] [error]  'HTTP_X_REQUESTED_WITH': 'XMLHttpRequest',
  [Wed Nov 14 14:50:44 2012] [error]  'PATH_INFO': u'/tryit/',
  [Wed Nov 14 14:50:44 2012] [error]  'PATH_TRANSLATED': 'django.wsgi/tryit/',
  [Wed Nov 14 14:50:44 2012] [error]  'QUERY_STRING': '',
  
  [Wed Nov 14 14:50:44 2012] [error]  'REQUEST_METHOD': 'POST',
  [Wed Nov 14 14:50:44 2012] [error]  'REQUEST_URI': '/tryit/',
  [Wed Nov 14 14:50:44 2012] [error]  'SCRIPT_FILENAME': 'django.wsgi',
  [Wed Nov 14 14:50:44 2012] [error]  'SCRIPT_NAME': u'',
  
  [Wed Nov 14 14:50:44 2012] [error]  'SERVER_ADMIN': 'webmaster@localhost',
  
  [Wed Nov 14 14:50:44 2012] [error]  'SERVER_PORT': '80',
  [Wed Nov 14 14:50:44 2012] [error]  'SERVER_PROTOCOL': 'HTTP/1.1',
  [Wed Nov 14 14:50:44 2012] [error]  'SERVER_SIGNATURE': '&lt;address&gt;Apache/2.2.22 (Ubuntu)
  [Wed Nov 14 14:50:44 2012] [error]  'SERVER_SOFTWARE': 'Apache/2.2.22 (Ubuntu)',
  
  [Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.callable_object': 'application',
  [Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.enable_sendfile': '0',
  [Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.handler_script': '',
  [Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.input_chunked': '0',
  [Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.listener_host': '',
  [Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.listener_port': '80',
  [Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.process_group': '',
  [Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.queue_start': '1352926244930263',
  [Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.request_handler': 'wsgi-script',
  [Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.script_reloading': '1',
  [Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.version': (3, 4),
  [Wed Nov 14 14:50:44 2012] [error]  'wsgi.errors': &lt;mod_wsgi.Log object at 0xa8224c78&gt;,
  [Wed Nov 14 14:50:44 2012] [error]  'wsgi.file_wrapper': &lt;built-in method file_wrapper of
   mod_wsgi.Adapter object at 0xa8210218&gt;,
  [Wed Nov 14 14:50:44 2012] [error]  'wsgi.input': &lt;mod_wsgi.Input object at 0xa8205ef8&gt;,
  [Wed Nov 14 14:50:44 2012] [error]  'wsgi.multiprocess': True,
  [Wed Nov 14 14:50:44 2012] [error]  'wsgi.multithread': True,
  [Wed Nov 14 14:50:44 2012] [error]  'wsgi.run_once': False,
  [Wed Nov 14 14:50:44 2012] [error]  'wsgi.url_scheme': 'http',
  [Wed Nov 14 14:50:44 2012] [error]  'wsgi.version': (1, 0)}&gt;
  
  
  But when I use fiddler, I can see the query parameter string. I am stuck here for a day. Please help. Thanks.
  </code></pre>
  
  <p>New updates:
   I use chrome and in the Network tab, it says there is an internal server error and the initiator is jquery.min.js:16. I do not undersand this information. Does this contain some information in it?</p>
  
  <p>If I change from POST to GET, the query parameters can be recieved by the server. But if I use POST, the query parameters cannot be posted. How can explain it?</p>