[TYPO3-german] ajax in erweiterungen

[Mikwauschk]

Hallo,

kann mir jemand ein Beispiel geben wie ich ajax calls in Typo3 einbinde 
(fluid / exbase)
was ich im netz gefunden habe funktionierte leider nich richtig ... oder 
habe ich etwas vergessen...

im template
  <script type="text/javascript">   var 
actionsPathFromViewHelperSetInTheView = '<f:uri.action action="ajax" 
controller="Fahrzeuge" pageType="1249012345" />'; </script>
<f:form.select name="ANZEIGE_MARKE_ID" 
options="{search.ANZEIGE_MARKE_ID}" 
id="tx-srwebmobile24cm-ANZEIGE_MARKE_ID" optionValueField="id" 
optionLabelField="bezeichnung"  additionalAttributes="{onChange : 
'performAjaxCall(this,\'ANZEIGE_MODELL\');'}" >
                 <select class="search_single_select" 
id="tx-srwebmobile24cm-ANZEIGE_MARKE_ID"><option>dummy</option></select>
                 </f:form.select>

  js

function performAjaxCall(selectFieldObj,key) {
     alert(selectFieldObj + ' --- ' + key);
     $.ajax({
         url: actionsPathFromViewHelperSetInTheView,
         data:{
"tx_srwebmobile24cm_webmobile24[key]":selectFieldObj.value
         },
         success:function (data) {
             // do something with your json
             alert('Load was performed.');
             alert(data);
         }
     });
}

controller

   public function ajaxAction() {
print_r('ajax start');
     // try to always validate the incoming arguments
     if (!$this->request->hasArgument('uid') || 
intval($this->request->getArgument('uid')) == 0) {
         header('HTTP/1.1 400 Bad Request');
         return json_encode(array('error'=> 'Bad request'));
     }

     $uid = intval($this->request->getArgument('uid'));

     $dataFromRepo = 'test ausgabe ';
     if ($dataFromRepo == null) {
         header('HTTP/1.1 404 Not found');
         return json_encode(
            array('error'=> 'Not found or you have no access or 
something else... happens...')
         );
     }
     $resultArray = array(
         "field1" => $dataFromRepo,
         // etc...
     );

     return json_encode($resultArray);
}

typoscript setup.txt

ajax = PAGE
ajax {
# You don't need to change this typeNum
typeNum = 1249012345
config {
disableAllHeaderCode = 1
disablePrefixComment = 1
additionalHeaders = Content-type: text/plain
xhtml_cleaning = 0
no_cache = 1
admPanel = 0
debug = 0
}
}

|ausgabe in der konsole: |||Page Not Found | Reason: Request parameters 
could not be validated (&amp;cHash comparison failed||)|habe ich noch 
etwas vergessen?

ömm ja was habe ich vergessen oder falsch gemacht?

-- 
Christian