Hi mutabor

>  I have a form and some fields within it. I need to submit this form
> by
>  onchange event of select element (see the code). But the way I did it
>  submits form using regular way - not through Ajax call. If I use
>  $ajax->submit(..) to submit this form everything works perfect.
>  But I do not need submit button. How can I reach the same effect as
>  with $ajax->submit but with select's onchage event. Please advise.

I would have a look at observeField first (see the Ajax section in the 
Cake manual).

If that doesn't do the job, then I would use Prototype/Scriptaculous:

   Form.Element.Observer (see Scriptaculous documentation for details)

to trigger some Javascript to submit the form.

Regards,
Langdon

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