Ok this is how I did it, but everything is outside a form / table
class:
Partial to override default admin generator field venue_id
_venue_id.php
------------------------
<?php use_helper('Javascript')?>
<div class="sf_admin_form_row sf_admin_foreignkey">
<?php echo $form['venue_id']->renderError() ?>
<div>
<?php echo $form['venue_id']->renderLabel('Venue') ?>
<?php
$w = new sfWidgetFormDoctrineChoice(array('model' => 'District',
'add_empty' => '--Filter by District--'));
echo $w->render('district_id', null, array('id' =>
'district'));
?>
<?php echo observe_field('district', array(
'update' => 'district-select',
'url' => '/admin.php/course/selectVenue',
'with' => "'district=' + value",
'loading' => "Element.show('indicator');Element.hide('gp-
select')",
'complete' => "Element.hide('indicator');Element.show('gp-
select')",
)) ?>
»
<span id="district-select"><?php echo $form['venue_id']->render
($attributes) ?></span>
<div id="indicator" style="display: none"></div>
</div>
</div>
AJAX action to return filtered select
---------------------------------------------------
public function executeSelectVenue($request){
$this->forward404Unless($request->isXmlHttpRequest());
$this->forward404Unless($request->hasParameter('district'));
$q = Doctrine_Query::create()
->from('Venue v')
->where('v.district_id = ?', $request->getParameter('district'));
$w = new sfWidgetFormDoctrineChoice(array('model' => 'Venue',
'query' => $q));
return $this->renderText($w->render('course[venue_id]'));
}
It feels odd to create widgets in the partial / action but overkill to
create an additional class? What does everyone think?
I'll make a snipeet of this when its tidy! (and Refactored
properly :-)
John
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