public function getCMSFields()
{
$f = parent::getCMSFields();
$f->addFieldToTab('Root.Main', $date = new DatetimeField('SubmissionBeginDate', 'Submission Begin Date'));
$date->getDateField()->setConfig('showcalendar', true);
$date->setConfig('dateformat', 'dd/MM/yyyy');
$f->addFieldToTab('Root.Main', $date = new DatetimeField('SubmissionEndDate', 'Submission End Date'));
$date->getDateField()->setConfig('showcalendar', true);
$date->setConfig('dateformat', 'dd/MM/yyyy');
$f->addFieldsToTab('Root.Main', new NumericField('MaxSubmissionAllowedPerUser', 'Max. Submission Allowed Per User'));
if ($this->ID > 0) {
$config = new GridFieldConfig_RelationEditor(100);
$config->removeComponentsByType('GridFieldEditButton');
$config->removeComponentsByType('GridFieldAddNewButton');
$config->addComponent(new GridFieldDeleteAction('unlinkrelation'));
$groups = new GridField('AllowedGroups', 'Allowed Groups', $this->AllowedGroups(), $config);
$f->addFieldToTab('Root.Main', $groups);
}
return $f;
}
