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<?php |
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namespace SaltedHerring/ShortList; |
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class ShortListController extends Page_Controller |
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{ |
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private static $allowed_actions = array( |
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'add', |
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'remove', |
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'renderList' |
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); |
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private static $url_handlers = array( |
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'add' => 'add', |
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'remove' => 'remove', |
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'$URL!' => 'renderList', |
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); |
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public function init() |
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{ |
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parent::init(); |
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if ($this->request->getVar('page')) { |
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$this->currentPage = $this->request->getVar('page'); |
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} |
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} |
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/** |
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* When landing on the homepage, if there is a shortlist for the current |
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* user, redirect to the correct URL. Otherwise, 404. |
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* */ |
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public function index($request) |
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{ |
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if ($this->getSessionShortList()) { |
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return $this->renderWith( |
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array('Page', 'ShortList') |
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); |
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} else { |
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// render with not found template. |
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return $this->renderWith(array('Page', 'ShortList_empty')); |
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} |
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} |
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/** |
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* Create a new list if necessary. If a bot, do nothing! |
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* */ |
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public function initList() |
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{ |
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if (!ShortList::isBrowser()) { |
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$this->httpError(404); |
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} |
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if ($this->request->getVar('page')) { |
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$this->currentPage = $this->request->getVar('page'); |
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} |
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$shortlist = $this->getSessionShortList(); |
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if (!$shortlist || !$shortlist->exists()) { |
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$shortlist = new ShortList(); |
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$shortlist->write(); |
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} |
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} |
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public function renderList($request) |
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{ |
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$shortlist = DataObject::get_one('ShortList', $filter = array('URL' => $request->param('URL'))); |
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if (is_null(session_id()) || |
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!$request->param('URL') || |
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!$shortlist || |
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!$shortlist->exists() || |
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!ShortList::isBrowser() |
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) { |
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$this->httpError(404); |
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} |
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return $this->customise(array( |
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'ShortlistURL' => $shortlist && $shortlist->exists() ? $shortlist->Link() : false, |
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'ShortlistCount' => $shortlist && $shortlist->exists() ? $shortlist->ShortListItems()->Count() : 0 |
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))->renderWith( |
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array('ShortList', 'Page') |
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); |
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} |
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/** |
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* Add an item to the shortlist. |
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* |
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* $request params: |
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* |
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* * type - classname of the |
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* * id - id of the object to add. |
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* * s - session id. |
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* |
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* */ |
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public function add($request) |
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{ |
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if (is_null(session_id()) || |
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!$request->getVar('id') || |
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!$request->getVar('type') || |
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!$request->getVar('s') || |
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$request->getVar('s') != session_id() || |
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!ShortList::isBrowser()) { |
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$this->httpError(404); |
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} |
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$add = $this->addToShortList( |
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$ID = $request->getVar('id'), |
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$type = $request->getVar('type'), |
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$session = $request->getVar('s') |
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); |
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if ($request->isAjax()) { |
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$shortlist = $this->getSessionShortList(); |
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$url = false; |
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if ($shortlist && $shortlist->exists()) { |
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$url = $shortlist->Link(); |
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} |
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return json_encode(array( |
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'status' => $add, |
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'count' => $this->ShortListCount($session), |
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'url' => $url |
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)); |
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} |
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return $add; |
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} |
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public function addToShortList($ID = false, $type = null, $session = false) |
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{ |
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if (!$ID || is_null($type) || !$session) { |
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return false; |
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} |
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$shortlist = $this->getSessionShortList(); |
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if (!$shortlist || !$shortlist->exists()) { |
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$shortlist = new ShortList(); |
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$shortlist->write(); |
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} |
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$item = DataObject::get_by_id($type, $ID); |
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if ($item && $item->exists()) { |
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$shortlistItem = new ShortListItem(); |
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$shortlistItem->ShortListID = $shortlist->ID; |
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$shortlistItem->ItemID = $item->ID; |
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$shortlistItem->ItemType = $type; |
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$shortlist->ShortListItems()->add($shortlistItem); |
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$shortlist->write(); |
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} |
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return true; |
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} |
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public function remove($request) |
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{ |
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if (is_null(session_id()) || |
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!$request->getVar('id') || |
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!$request->getVar('type') || |
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!$request->getVar('s') || |
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$request->getVar('s') != session_id() || |
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!ShortList::isBrowser() |
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) { |
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$this->httpError(404); |
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} |
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$remove = $this->removeFromShortList( |
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$ID = $request->getVar('id'), |
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$type = $request->getVar('type'), |
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$session = $request->getVar('s') |
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); |
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if ($request->isAjax()) { |
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$shortlist = $this->getSessionShortList(); |
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$url = '#'; |
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if ($shortlist && $shortlist->exists()) { |
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$url = $shortlist->Link(); |
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} |
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return json_encode(array( |
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'status' => $remove, |
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'count' => $this->shortListCount($session), |
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'url' => $url |
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)); |
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} |
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return $remove; |
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} |
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private function removeFromShortList($ID = false, $type = null, $session = false) |
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{ |
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$shortlist = $this->getSessionShortList(); |
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if (!$shortlist || !$shortlist->exists()) { |
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return true; |
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} |
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$item = DataObject::get_one('ShortListItem', $filter = "ItemType = '" . $type . "' AND ItemID = " . $ID); |
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if ($item && $item->exists()) { |
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$item->delete(); |
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} |
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return true; |
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} |
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/** |
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* Get the number of items in the current short list. |
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* |
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* @param session The session to check & find a shortlist for. |
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* @return mixed false if no session exists - else the number of items in the shortlist. |
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* */ |
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public function shortListCount($session = false) |
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{ |
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if (is_null(session_id()) || !$session || $session != session_id() || !ShortList::isBrowser()) { |
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return false; |
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} |
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$shortlist = $this->getSessionShortList(); |
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if (!$shortlist || !$shortlist->exists()) { |
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return 0; |
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} |
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return $shortlist->Items()->count(); |
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} |
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public function paginatedItems() |
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{ |
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if (!$this->getRequest()->param('URL') || !ShortList::isBrowser()) { |
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return false; |
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} |
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$items = false; |
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$list = DataObject::get_one('ShortList', $filter = array('URL' => $this->getRequest()->param('URL'))); |
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if ($list) { |
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$items = $list->ShortListItems(); |
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} |
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$this->list = new PaginatedList($items, $this->getRequest()); |
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$this->list->setPageLength(Config::inst()->get('ShortList', 'PaginationCount')); |
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$this->list->setPaginationGetVar('page'); |
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if ($this->currentPage) { |
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$this->list->setCurrentPage($this->currentPage); |
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} |
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return $this->list; |
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} |
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public function nextPage() |
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{ |
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if ($this->list->CurrentPage() < $this->list->TotalPages()) { |
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return '?page=' . ($this->list->CurrentPage() + 1); |
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} |
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return false; |
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} |
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public function prevPage() |
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{ |
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if ($this->list->CurrentPage() > 1) { |
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return '?page=' . ($this->list->CurrentPage() - 1); |
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} |
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return false; |
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} |
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private function getSessionShortList() |
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{ |
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return DataObject::get_one('ShortList', $filter = array('SessionID' => session_id())); |
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} |
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/** |
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* Get the absolute URL of this controller. |
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* */ |
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public function Link($action = null) |
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{ |
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$shortlist = $this->getSessionShortList(); |
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$url = Config::inst()->get('ShortList', 'URLSegment'); |
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if ($shortlist) { |
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$url .= $shortlist->URL; |
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} |
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return $url; |
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} |
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} |
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