Hey guys. I#m not able to get the datepicker working with gridfield. Some ideas?
Here's my code:
<?php
class Event extends DataObject
{
public static $db = array(
'Title' => 'Varchar(255)',
'URL' => 'Varchar(255)',
'Summary' => 'Text',
'Anchor' => 'Varchar(255)',
'Date' => 'Date'
);

public static $has_one = array(
'Thumb' => 'Image',
'EventPage' => 'EventPage'
);

public static $summary_fields = array(
'Title' => 'Title',
'URL' => 'Website URL',
'Anchor' => 'Anchor Text',
);

public function getCMSFields_forPopup() {

$thumbField = new UploadField('Thumb', 'Screenshot');
$thumbField->allowedExtensions = array('jpg', 'gif', 'png');
$datefield = new DateField('Date');
$datefield->setConfig('showcalendar', true);
$datefield->setConfig('dateformat', 'd/M/Y');
$datefield->setLocale('de_DE');

return new FieldList(
new TextField('Title', 'Title'),
new TextareaField('Summary', 'Brief Summary'),
new TextField('Anchor', 'Anchor Text'),
new TextField('URL', 'Complete Website URL (including http:// )'),
$datefield,
$thumbField
);
}

}