so far i successfully coded an image upload and resize feature. but i
want my website to be web 2.0 compliant. so i read about ajax and
thought its really easy to do ajax with cake. appearently i've got
problems.
all this happens with controller "users", model "User" and View
"editProfile.ctp":
i wanna show a typical loading gif while the picture is uploaded. when
uploading is done, the gif disappears and the picture is shown.
so far i have the form in my view where i define url and options:
echo $ajax->form('User','post', array (
'url'=> array(
'controller' => 'users',
'action' => 'uploadProfileImage'
),
'update' => 'image_preview',
'before' => 'startLoading()',
'complete' => 'endloading()',
'failure' => 'failure()'
));
echo $form->file('User');
echo $form->button('Upload', array('type' => 'submit'));
echo $form->end();
with my divs in the view for showing the loading icon and picture
<div id="loading" style="display:none;">
<?php echo $html->image('../img/icons/loader.gif'); ?>
</div>
<div id="image_preview">
<?php echo $html->image('profilepics/small/'.
$user['image_path']); ?>
</div>
in the <head> section of my view
<?php
echo $this->Html->css(array('profile.css'));
echo $this->Html->charset();
echo $javascript->link('scriptaculous-js-1.8.3/lib/prototype');
echo $javascript->link('scriptaculous-js-1.8.3/src/scriptaculous');
?>
<script id="demo" type="text/javascript">
var error = false;
function startLoading(){
error=false;
Element.show('loading');
Element.hide('image_preview');
}
function endLoading(){
Element.hide('loading');
if(!error) Element.show('image_preview');
}
function failure(){
alert('Es ist ein Fehler aufgetreten');
error=true;
}
</script>
the actual uploading process is triggered in a function in my
controller
function uploadProfileImage()
{
$image_path = $this->Image->upload_image_and_thumbnail($this-
>data,"",200,150,$this->Session->read('User.username'), true);
$updates = $this->User->findByUsername($this->Session-
>read('User.username'));
$updates['User']['image_path']= $updates['User']['username']."/".
$updates['User']['username'].".jpg";
$this->User->save($updates);
$this->redirect(array('controller' => 'users', 'action' =>
'editprofile'));
}
the problem is, i only see the loading icon endlessly and it seems my
function in the controller is not called correctly.
can anyone help me?
thx :)
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