function ActiveModulePosition($alias)
{
// get the module area as an object
$position = ModulePosition::get()->filter('Alias', $alias)->First();
if (!isset($position->ID)) {
user_error("Cannot find a Module Position by that name (" . $alias . "). Check your template is calling a ModulePosition by an alias that exists!", E_USER_ERROR);
}
// get this page's module list for specified position
$modules = $this->PageModules()->Filter('PositionID', $position->ID);
// if there are any modules in this area
if ($modules->Count() > 0) {
return true;
}
return false;
}
public function onBeforeWrite()
{
parent::onBeforeWrite();
// convert name to lowercase, dashed
$newAlias = $this->URLFriendly($this->Title);
// get positions that already have this alias
$positionsThatMatch = ModulePosition::get()->Filter('Alias', $newAlias)->First();
// if we find a match
if (isset($positionsThatMatch->ID)) {
// create a new unique alias (based on ID)
$this->Alias = $newAlias . '-' . $this->ID;
// no match, meaning we're safe to use this as a unique alias
} else {
$this->Alias = $newAlias;
}
}
public function getEditForm($id = null, $fields = null)
{
// get the cmsfields from ModuleManager DataObject
$moduleManager = ModuleManager::CurrentModuleManager();
$fields = $moduleManager->getCMSFields();
// what pages is this module active on
$modulesGridField = GridField::create("Modules_Gridfield", "Modules", Module::get(), $modulesGridFieldConfig = GridFieldConfig_RecordEditor::create());
$modulePositionsGridField = GridField::create("ModulePositions_Gridfield", "Module Positions", ModulePosition::get(), GridFieldConfig_RecordEditor::create());
// add multiclass dropdown for modules
$modulesGridFieldConfig->removeComponentsByType('GridFieldAddNewButton');
$modulesGridFieldConfig->addComponent(new GridFieldAddNewMultiClass());
// add the fields
$fields->addFieldToTab('Root.Modules', $modulesGridField);
$fields->addFieldToTab('Root.ModulePositions', $modulePositionsGridField);
$fields->addFieldToTab('Root.ModulePositions', LiteralField::create('html', '<em>To load a position into your template, simply write <code>$ModulePosition(Alias)</code> where <code>Alias</code> is your position alias</em>'));
// actions
$actions = $moduleManager->getCMSActions();
$form = CMSForm::create($this, 'EditForm', $fields, $actions)->setHTMLID('Form_EditForm');
$form->setResponseNegotiator($this->getResponseNegotiator());
$form->addExtraClass('cms-content center cms-edit-form');
// don't add data-pjax-fragment=CurrentForm, its added in the content template instead
if ($form->Fields()->hasTabset()) {
$form->Fields()->findOrMakeTab('Root')->setTemplate('CMSTabSet');
}
$form->setHTMLID('Form_EditForm');
$form->loadDataFrom($moduleManager);
$form->setTemplate($this->getTemplatesWithSuffix('_EditForm'));
// Use <button> to allow full jQuery UI styling
$actions = $actions->dataFields();
if ($actions) {
foreach ($actions as $action) {
$action->setUseButtonTag(true);
}
}
return $form;
}
/**
* Detect if this there are any modules on this page for this module area
* @return boolean
**/
public function HasModules($alias)
{
// get the module area as an object
$position = ModulePosition::get()->filter('Alias', $alias)->First();
// no position by that ID, so we certainly cannot have any modules!
if (!isset($position->ID)) {
return false;
}
// get this page's module list for specified position
$modules = $this->PageModules()->Filter('PositionID', $position->ID);
return $modules->Count() > 0;
}