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<?php |
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namespace SilverStripe\Blog\Model; |
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use PageController; |
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use SilverStripe\Control\Director; |
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use SilverStripe\Control\HTTPResponse_Exception; |
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use SilverStripe\Control\RSS\RSSFeed; |
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use SilverStripe\ORM\DataList; |
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use SilverStripe\ORM\FieldType\DBDatetime; |
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use SilverStripe\ORM\FieldType\DBHTMLText; |
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use SilverStripe\ORM\PaginatedList; |
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use SilverStripe\ORM\SS_List; |
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use SilverStripe\Security\Member; |
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use SilverStripe\View\Parsers\URLSegmentFilter; |
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/** |
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* @method Blog data() |
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*/ |
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class BlogController extends PageController |
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{ |
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/** |
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* @var array |
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*/ |
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private static $allowed_actions = [ |
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'archive', |
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'tag', |
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'category', |
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'rss', |
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'profile' |
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]; |
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/** |
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* @var array |
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*/ |
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private static $url_handlers = [ |
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'tag/$Tag!/$Rss' => 'tag', |
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'category/$Category!/$Rss' => 'category', |
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'archive/$Year!/$Month/$Day' => 'archive', |
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'profile/$Profile!' => 'profile' |
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]; |
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/** |
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* @var array |
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*/ |
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private static $casting = [ |
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'MetaTitle' => 'Text', |
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'FilterDescription' => 'Text' |
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]; |
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/** |
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* If enabled, blog author profiles will be turned off for this site |
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* |
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* @config |
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* @var bool |
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*/ |
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private static $disable_profiles = false; |
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/** |
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* The current Blog Post DataList query. |
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* |
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* @var DataList |
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*/ |
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protected $blogPosts; |
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/** |
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* Renders a Blog Member's profile. |
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* |
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* @throws HTTPResponse_Exception |
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* @return $this |
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*/ |
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public function profile() |
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{ |
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if ($this->config()->get('disable_profiles')) { |
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$this->httpError(404, 'Not Found'); |
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} |
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// Get profile posts |
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$posts = $this->getCurrentProfilePosts(); |
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if (!$posts) { |
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$this->httpError(404, 'Not Found'); |
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} |
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$this->setFilteredPosts($posts); |
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return $this; |
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} |
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/** |
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* Get the Member associated with the current URL segment. |
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* |
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* @return null|Member|BlogMemberExtension |
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*/ |
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public function getCurrentProfile() |
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{ |
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$segment = $this->getCurrentProfileURLSegment(); |
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if (!$segment) { |
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return null; |
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} |
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/** @var Member $profile */ |
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$profile = Member::get() |
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->find('URLSegment', $segment); |
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return $profile; |
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} |
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/** |
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* Get URL Segment of current profile |
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* |
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* @return null|string |
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*/ |
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View Code Duplication |
public function getCurrentProfileURLSegment() |
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{ |
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$segment = isset($this->urlParams['Profile']) |
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? $this->urlParams['Profile'] |
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: null; |
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if (!$segment) { |
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return null; |
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} |
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// url encode unless it's multibyte (already pre-encoded in the database) |
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// see https://github.com/silverstripe/silverstripe-cms/pull/2384 |
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return URLSegmentFilter::singleton()->getAllowMultibyte() |
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? $segment |
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: rawurlencode($segment); |
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} |
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/** |
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* Get posts related to the current Member profile. |
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* |
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* @return null|DataList|BlogPost[] |
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*/ |
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public function getCurrentProfilePosts() |
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{ |
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$profile = $this->getCurrentProfile(); |
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if ($profile) { |
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return $profile->BlogPosts()->filter('ParentID', $this->ID); |
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} |
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return null; |
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} |
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/** |
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* Renders an archive for a specified date. This can be by year or year/month. |
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* |
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* @return $this |
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* @throws HTTPResponse_Exception |
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*/ |
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public function archive() |
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{ |
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$year = $this->getArchiveYear(); |
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$month = $this->getArchiveMonth(); |
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$day = $this->getArchiveDay(); |
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// Validate all values |
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if ($year === false || $month === false || $day === false) { |
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$this->httpError(404, 'Not Found'); |
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} |
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$posts = $this->data()->getArchivedBlogPosts($year, $month, $day); |
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$this->setFilteredPosts($posts); |
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return $this; |
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} |
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/** |
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* Fetches the archive year from the url. |
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* |
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* Returns int if valid, current year if not provided, false if invalid value |
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* |
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* @return int|false |
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*/ |
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public function getArchiveYear() |
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{ |
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if (isset($this->urlParams['Year']) |
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&& preg_match('/^[0-9]{4}$/', $this->urlParams['Year']) |
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) { |
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return (int)$this->urlParams['Year']; |
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} |
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if (empty($this->urlParams['Year']) && |
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$this->urlParams['Action'] === 'archive' |
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) { |
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return DBDatetime::now()->Year(); |
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} |
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return false; |
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} |
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/** |
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* Fetches the archive money from the url. |
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* |
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* Returns int if valid, null if not provided, false if invalid value |
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* |
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* @return null|int|false |
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*/ |
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public function getArchiveMonth() |
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{ |
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$month = isset($this->urlParams['Month']) |
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? $this->urlParams['Month'] |
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: null; |
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if (!$month) { |
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return null; |
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} |
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if (preg_match('/^[0-9]{1,2}$/', $month) |
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&& $month > 0 |
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&& $month < 13 |
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) { |
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return (int)$month; |
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} |
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return false; |
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} |
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/** |
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* Fetches the archive day from the url. |
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* |
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* Returns int if valid, null if not provided, false if invalid value |
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* |
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* @return null|int|false |
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*/ |
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public function getArchiveDay() |
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{ |
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$day = isset($this->urlParams['Day']) |
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? $this->urlParams['Day'] |
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: null; |
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if (!$day) { |
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return null; |
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} |
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// Cannot calculate day without month and year |
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$month = $this->getArchiveMonth(); |
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$year = $this->getArchiveYear(); |
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if (!$month || !$year) { |
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return false; |
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} |
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if (preg_match('/^[0-9]{1,2}$/', $day) && checkdate($month, $day, $year)) { |
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return (int)$day; |
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} |
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return false; |
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} |
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/** |
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* Renders the blog posts for a given tag. |
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* |
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* @return DBHTMLText|$this |
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* @throws HTTPResponse_Exception |
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*/ |
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View Code Duplication |
public function tag() |
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{ |
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// Ensure tag exists |
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$tag = $this->getCurrentTag(); |
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if (!$tag) { |
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$this->httpError(404, 'Not Found'); |
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} |
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// Get posts with this tag |
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$posts = $this |
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->data() |
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->getBlogPosts() |
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->filter(['Tags.URLSegment' => $tag->URLSegment]); // Soft duplicate handling |
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$this->setFilteredPosts($posts); |
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// Render as RSS if provided |
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if ($this->isRSS()) { |
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return $this->rssFeed($posts, $tag->getLink()); |
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} |
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return $this; |
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} |
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/** |
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* Get BlogTag assigned to current filter |
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* |
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* @return null|BlogTag |
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*/ |
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public function getCurrentTag() |
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{ |
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$segment = $this->getCurrentTagURLSegment(); |
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if (!$segment) { |
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return null; |
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} |
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/** @var BlogTag $tag */ |
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$tag = $this |
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->data() |
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->Tags(false)// Show "no results" instead of "404" |
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->find('URLSegment', $segment); |
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return $tag; |
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} |
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/** |
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* Get URLSegment of selected category (not: URLEncoded based on multibyte) |
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* |
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* @return string|null |
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*/ |
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View Code Duplication |
public function getCurrentTagURLSegment() |
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{ |
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$segment = isset($this->urlParams['Tag']) |
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? $this->urlParams['Tag'] |
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: null; |
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// url encode unless it's multibyte (already pre-encoded in the database) |
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// see https://github.com/silverstripe/silverstripe-cms/pull/2384 |
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return URLSegmentFilter::singleton()->getAllowMultibyte() |
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? $segment |
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: rawurlencode($segment); |
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} |
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/** |
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* Renders the blog posts for a given category. |
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* |
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* @return DBHTMLText|$this |
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* @throws HTTPResponse_Exception |
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*/ |
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View Code Duplication |
public function category() |
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{ |
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$category = $this->getCurrentCategory(); |
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if (!$category) { |
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$this->httpError(404, 'Not Found'); |
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} |
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// Get posts with this category |
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$posts = $this |
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->data() |
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->getBlogPosts() |
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->filter(['Categories.URLSegment' => $category->URLSegment]); // Soft duplicate handling |
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$this->setFilteredPosts($posts); |
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if ($this->isRSS()) { |
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return $this->rssFeed($posts, $category->getLink()); |
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} |
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return $this; |
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} |
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/** |
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* Category Getter for use in templates. |
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* |
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* @return null|BlogCategory |
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*/ |
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public function getCurrentCategory() |
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{ |
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$segment = $this->getCurrentCategoryURLSegment(); |
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if (!$segment) { |
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return null; |
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} |
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/** @var BlogCategory $category */ |
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$category = $this |
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->data() |
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->Categories(false)// Show "no results" instead of "404" |
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->find('URLSegment', $segment); |
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return $category; |
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} |
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/** |
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* Get URLSegment of selected category |
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* |
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* @return string|null |
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*/ |
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View Code Duplication |
public function getCurrentCategoryURLSegment() |
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{ |
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$segment = isset($this->urlParams['Category']) |
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? $this->urlParams['Category'] |
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: null; |
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// url encode unless it's multibyte (already pre-encoded in the database) |
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// see https://github.com/silverstripe/silverstripe-cms/pull/2384 |
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return URLSegmentFilter::singleton()->getAllowMultibyte() |
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? $segment |
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: rawurlencode($segment); |
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} |
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/** |
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* Get the meta title for the current action. |
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* |
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* @return string |
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*/ |
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public function getMetaTitle() |
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{ |
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$title = $this->data()->getTitle(); |
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$filter = $this->getFilterDescription(); |
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|
390
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if ($filter) { |
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$title = sprintf('%s - %s', $title, $filter); |
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} |
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$this->extend('updateMetaTitle', $title); |
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|
396
|
|
|
return $title; |
397
|
|
|
} |
398
|
|
|
|
399
|
|
|
/** |
400
|
|
|
* Returns a description of the current filter. |
401
|
|
|
* |
402
|
|
|
* @return string |
403
|
|
|
*/ |
404
|
|
|
public function getFilterDescription() |
405
|
|
|
{ |
406
|
|
|
$items = []; |
407
|
|
|
|
408
|
|
|
$list = $this->PaginatedList(); |
409
|
|
|
$currentPage = $list->CurrentPage(); |
410
|
|
|
|
411
|
|
|
if ($currentPage > 1) { |
412
|
|
|
$items[] = _t( |
413
|
|
|
'SilverStripe\\Blog\\Model\\Blog.FILTERDESCRIPTION_PAGE', |
414
|
|
|
'Page {page}', |
415
|
|
|
null, |
416
|
|
|
[ |
417
|
|
|
'page' => $currentPage |
418
|
|
|
] |
419
|
|
|
); |
420
|
|
|
} |
421
|
|
|
|
422
|
|
|
if ($author = $this->getCurrentProfile()) { |
423
|
|
|
$items[] = _t( |
424
|
|
|
'SilverStripe\\Blog\\Model\\Blog.FILTERDESCRIPTION_AUTHOR', |
425
|
|
|
'By {author}', |
426
|
|
|
null, |
427
|
|
|
[ |
428
|
|
|
'author' => $author->Title |
429
|
|
|
] |
430
|
|
|
); |
431
|
|
|
} |
432
|
|
|
|
433
|
|
|
if ($tag = $this->getCurrentTag()) { |
434
|
|
|
$items[] = _t( |
435
|
|
|
'SilverStripe\\Blog\\Model\\Blog.FILTERDESCRIPTION_TAG', |
436
|
|
|
'Tagged with {tag}', |
437
|
|
|
null, |
438
|
|
|
[ |
439
|
|
|
'tag' => $tag->Title |
440
|
|
|
] |
441
|
|
|
); |
442
|
|
|
} |
443
|
|
|
|
444
|
|
|
if ($category = $this->getCurrentCategory()) { |
445
|
|
|
$items[] = _t( |
446
|
|
|
'SilverStripe\\Blog\\Model\\Blog.FILTERDESCRIPTION_CATEGORY', |
447
|
|
|
'In category {category}', |
448
|
|
|
null, |
449
|
|
|
[ |
450
|
|
|
'category' => $category->Title |
451
|
|
|
] |
452
|
|
|
); |
453
|
|
|
} |
454
|
|
|
|
455
|
|
|
if ($this->getArchiveYear()) { |
|
|
|
|
456
|
|
|
if ($this->getArchiveDay()) { |
457
|
|
|
$date = $this->getArchiveDate()->Nice(); |
458
|
|
|
} elseif ($this->getArchiveMonth()) { |
459
|
|
|
$date = $this->getArchiveDate()->format('MMMM, y'); |
460
|
|
|
} else { |
461
|
|
|
$date = $this->getArchiveDate()->format('y'); |
462
|
|
|
} |
463
|
|
|
|
464
|
|
|
$items[] = _t( |
465
|
|
|
'SilverStripe\\Blog\\Model\\Blog.FILTERDESCRIPTION_DATE', |
466
|
|
|
'In {date}', |
467
|
|
|
null, |
468
|
|
|
[ |
469
|
|
|
'date' => $date, |
470
|
|
|
] |
471
|
|
|
); |
472
|
|
|
} |
473
|
|
|
|
474
|
|
|
$result = ''; |
475
|
|
|
|
476
|
|
|
if ($items) { |
|
|
|
|
477
|
|
|
$result = implode(', ', $items); |
478
|
|
|
} |
479
|
|
|
|
480
|
|
|
$this->extend('updateFilterDescription', $result); |
481
|
|
|
|
482
|
|
|
return $result; |
483
|
|
|
} |
484
|
|
|
|
485
|
|
|
/** |
486
|
|
|
* Get filtered blog posts |
487
|
|
|
* |
488
|
|
|
* @return DataList|BlogPost[] |
489
|
|
|
*/ |
490
|
|
|
public function getFilteredPosts() |
491
|
|
|
{ |
492
|
|
|
return $this->blogPosts ?: $this->data()->getBlogPosts(); |
493
|
|
|
} |
494
|
|
|
|
495
|
|
|
/** |
496
|
|
|
* Set filtered posts |
497
|
|
|
* |
498
|
|
|
* @param SS_List|BlogPost[] $posts |
499
|
|
|
* @return $this |
500
|
|
|
*/ |
501
|
|
|
public function setFilteredPosts($posts) |
502
|
|
|
{ |
503
|
|
|
$this->blogPosts = $posts; |
|
|
|
|
504
|
|
|
return $this; |
505
|
|
|
} |
506
|
|
|
|
507
|
|
|
/** |
508
|
|
|
* Returns a list of paginated blog posts based on the BlogPost dataList. |
509
|
|
|
* |
510
|
|
|
* @return PaginatedList |
511
|
|
|
*/ |
512
|
|
|
public function PaginatedList() |
513
|
|
|
{ |
514
|
|
|
$allPosts = $this->getFilteredPosts(); |
515
|
|
|
$posts = PaginatedList::create($allPosts); |
516
|
|
|
|
517
|
|
|
// Set appropriate page size |
518
|
|
|
if ($this->data()->PostsPerPage > 0) { |
519
|
|
|
$pageSize = $this->data()->PostsPerPage; |
520
|
|
|
} elseif ($count = $allPosts->count()) { |
521
|
|
|
$pageSize = $count; |
522
|
|
|
} else { |
523
|
|
|
$pageSize = 99999; |
524
|
|
|
} |
525
|
|
|
$posts->setPageLength($pageSize); |
526
|
|
|
|
527
|
|
|
// Set current page |
528
|
|
|
$start = (int)$this->request->getVar($posts->getPaginationGetVar()); |
529
|
|
|
$posts->setPageStart($start); |
530
|
|
|
|
531
|
|
|
return $posts; |
532
|
|
|
} |
533
|
|
|
|
534
|
|
|
|
535
|
|
|
/** |
536
|
|
|
* Returns the absolute link to the next page for use in the page meta tags. This helps search engines |
537
|
|
|
* find the pagination and index all pages properly. |
538
|
|
|
* |
539
|
|
|
* @example "<% if $PaginationAbsoluteNextLink %><link rel="next" href="$PaginationAbsoluteNextLink"><% end_if %>" |
540
|
|
|
* |
541
|
|
|
* @return string|null |
542
|
|
|
*/ |
543
|
|
|
public function PaginationAbsoluteNextLink() |
544
|
|
|
{ |
545
|
|
|
$posts = $this->PaginatedList(); |
546
|
|
|
if ($posts->NotLastPage()) { |
547
|
|
|
return Director::absoluteURL($posts->NextLink()); |
548
|
|
|
} |
549
|
|
|
|
550
|
|
|
return null; |
551
|
|
|
} |
552
|
|
|
|
553
|
|
|
/** |
554
|
|
|
* Returns the absolute link to the previous page for use in the page meta tags. This helps search engines |
555
|
|
|
* find the pagination and index all pages properly. |
556
|
|
|
* |
557
|
|
|
* @example "<% if $PaginationAbsolutePrevLink %><link rel="prev" href="$PaginationAbsolutePrevLink"><% end_if %>" |
558
|
|
|
* |
559
|
|
|
* @return string|null |
560
|
|
|
*/ |
561
|
|
|
public function PaginationAbsolutePrevLink() |
562
|
|
|
{ |
563
|
|
|
$posts = $this->PaginatedList(); |
564
|
|
|
if ($posts->NotFirstPage()) { |
565
|
|
|
return Director::absoluteURL($posts->PrevLink()); |
566
|
|
|
} |
567
|
|
|
|
568
|
|
|
return null; |
569
|
|
|
} |
570
|
|
|
|
571
|
|
|
/** |
572
|
|
|
* Displays an RSS feed of blog posts. |
573
|
|
|
* |
574
|
|
|
* @return string |
575
|
|
|
*/ |
576
|
|
|
public function rss() |
577
|
|
|
{ |
578
|
|
|
return $this->rssFeed($this->getFilteredPosts(), $this->Link()); |
579
|
|
|
} |
580
|
|
|
|
581
|
|
|
/** |
582
|
|
|
* Returns the current archive date. |
583
|
|
|
* |
584
|
|
|
* @return null|DBDatetime |
585
|
|
|
*/ |
586
|
|
|
public function getArchiveDate() |
587
|
|
|
{ |
588
|
|
|
$year = $this->getArchiveYear(); |
589
|
|
|
$month = $this->getArchiveMonth(); |
590
|
|
|
$day = $this->getArchiveDay(); |
591
|
|
|
|
592
|
|
|
if ($year) { |
|
|
|
|
593
|
|
|
if ($month) { |
594
|
|
|
$date = sprintf('%s-%s-01', $year, $month); |
595
|
|
|
|
596
|
|
|
if ($day) { |
597
|
|
|
$date = sprintf('%s-%s-%s', $year, $month, $day); |
598
|
|
|
} |
599
|
|
|
} else { |
600
|
|
|
$date = sprintf('%s-01-01', $year); |
601
|
|
|
} |
602
|
|
|
|
603
|
|
|
$obj = DBDatetime::create('date'); |
604
|
|
|
$obj->setValue($date); |
605
|
|
|
return $obj; |
606
|
|
|
} |
607
|
|
|
|
608
|
|
|
return null; |
609
|
|
|
} |
610
|
|
|
|
611
|
|
|
/** |
612
|
|
|
* Returns a link to the RSS feed. |
613
|
|
|
* |
614
|
|
|
* @return string |
615
|
|
|
*/ |
616
|
|
|
public function getRSSLink() |
617
|
|
|
{ |
618
|
|
|
return $this->Link('rss'); |
619
|
|
|
} |
620
|
|
|
|
621
|
|
|
/** |
622
|
|
|
* Displays an RSS feed of the given blog posts. |
623
|
|
|
* |
624
|
|
|
* @param DataList $blogPosts |
625
|
|
|
* @param string $link |
626
|
|
|
* |
627
|
|
|
* @return DBHTMLText |
628
|
|
|
*/ |
629
|
|
|
protected function rssFeed($blogPosts, $link) |
630
|
|
|
{ |
631
|
|
|
$rss = RSSFeed::create( |
632
|
|
|
$blogPosts, |
633
|
|
|
$link, |
634
|
|
|
$this->getMetaTitle(), |
635
|
|
|
$this->data()->MetaDescription |
636
|
|
|
); |
637
|
|
|
|
638
|
|
|
$this->extend('updateRss', $rss); |
639
|
|
|
|
640
|
|
|
return $rss->outputToBrowser(); |
641
|
|
|
} |
642
|
|
|
|
643
|
|
|
/** |
644
|
|
|
* Returns true if the $Rss sub-action for categories/tags has been set to "rss" |
645
|
|
|
* |
646
|
|
|
* @return bool |
647
|
|
|
*/ |
648
|
|
|
protected function isRSS() |
649
|
|
|
{ |
650
|
|
|
return isset($this->urlParams['RSS']) && strcasecmp($this->urlParams['RSS'], 'rss') == 0; |
651
|
|
|
} |
652
|
|
|
} |
653
|
|
|
|
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: