I'm new to using ajax helper.
I'm designing a travel document that uses 1 drop down and 1 text field in a
page.
The drop down lists the travel document types and the text field will
display the most current unused travel document according to the travel
document type being selected.
I tried to use observe field, but I don't know how to display it the fetched
field from db to text field.
Here's the code:
document.ctp
<?
echo $form->create('');
echo
$form->select('document_type_id',array($docTypes),null,array('id'=>'document'),true);
//this form field will output the recent document number
echo $form->input('document_number', array('id'=>'docnum'));
echo
$ajax->observeField('document',array('url'=>'populate_document_select','update'=>'docnum'));
echo $form->end('Save');
?>
DocumentsController
function test_ajax() {
$docTypes = $this->DocumentType->find('list');
$this->set(compact('docTypes'));
}
function populate_document_select() {
//this function will return most current unused doc number
$doc =
$this->Document->find('first',array('conditions'=>array('Document.document_type_id'=>$document_type_id,'status'=>'new'),
'fields'=>(array('Document.document_number'))));
return $doc['Document']['document_number'];
}
Any help will be greatly appreciated.
Thanks
I use cake php 1.2
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