array( 'notice_id' => array('type' => 'int', 'not null' => true, 'description' => 'notice that is the favorite'), 'user_id' => array('type' => 'int', 'not null' => true, 'description' => 'user who likes this notice'), 'uri' => array('type' => 'varchar', 'length' => 255, 'description' => 'universally unique identifier, usually a tag URI'), 'modified' => array('type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'), ), 'primary key' => array('notice_id', 'user_id'), 'unique keys' => array( 'fave_uri_key' => array('uri'), ), 'foreign keys' => array( 'fave_notice_id_fkey' => array('notice', array('notice_id' => 'id')), 'fave_user_id_fkey' => array('profile', array('user_id' => 'id')), // note: formerly referenced notice.id, but we can now record remote users' favorites ), 'indexes' => array( 'fave_notice_id_idx' => array('notice_id'), 'fave_user_id_idx' => array('user_id', 'modified'), 'fave_modified_idx' => array('modified'), ), ); } /** * Save a favorite record. * @fixme post-author notification should be moved here * * @param Profile $profile the local or remote user who likes * @param Notice $notice the notice that is liked * @return mixed false on failure, or Fave record on success */ static function addNew(Profile $profile, Notice $notice) { $fave = null; if (Event::handle('StartFavorNotice', array($profile, $notice, &$fave))) { $fave = new Fave(); $fave->user_id = $profile->id; $fave->notice_id = $notice->id; $fave->modified = common_sql_now(); $fave->uri = self::newURI($fave->user_id, $fave->notice_id, $fave->modified); if (!$fave->insert()) { common_log_db_error($fave, 'INSERT', __FILE__); return false; } self::blow('fave:list-ids:notice_id:%d', $fave->notice_id); self::blow('popular'); Event::handle('EndFavorNotice', array($profile, $notice)); } return $fave; } function delete($useWhere=false) { $profile = Profile::getKV('id', $this->user_id); $notice = Notice::getKV('id', $this->notice_id); $result = null; if (Event::handle('StartDisfavorNotice', array($profile, $notice, &$result))) { $result = parent::delete($useWhere); self::blow('fave:list-ids:notice_id:%d', $this->notice_id); self::blow('popular'); if ($result) { Event::handle('EndDisfavorNotice', array($profile, $notice)); } } return $result; } function stream($user_id, $offset=0, $limit=NOTICES_PER_PAGE, $own=false, $since_id=0, $max_id=0) { $stream = new FaveNoticeStream($user_id, $own); return $stream->getNotices($offset, $limit, $since_id, $max_id); } function idStream($user_id, $offset=0, $limit=NOTICES_PER_PAGE, $own=false, $since_id=0, $max_id=0) { $stream = new FaveNoticeStream($user_id, $own); return $stream->getNoticeIds($offset, $limit, $since_id, $max_id); } function asActivity() { $notice = Notice::getKV('id', $this->notice_id); if (!$notice) { throw new Exception("Fave for non-existent notice: " . $this->notice_id); } $profile = Profile::getKV('id', $this->user_id); if (!$profile) { throw new Exception("Fave by non-existent profile: " . $this->user_id); } $act = new Activity(); $act->verb = ActivityVerb::FAVORITE; // FIXME: rationalize this with URL below $act->id = $this->getURI(); $act->time = strtotime($this->modified); // TRANS: Activity title when marking a notice as favorite. $act->title = _("Favor"); // TRANS: Ntofication given when a user marks a notice as favorite. // TRANS: %1$s is a user nickname or full name, %2$s is a notice URI. $act->content = sprintf(_('%1$s marked notice %2$s as a favorite.'), $profile->getBestName(), $notice->getUrl()); $act->actor = ActivityObject::fromProfile($profile); $act->objects[] = ActivityObject::fromNotice($notice); $url = common_local_url('AtomPubShowFavorite', array('profile' => $this->user_id, 'notice' => $this->notice_id)); $act->selfLink = $url; $act->editLink = $url; return $act; } static function existsForProfile($notice, Profile $scoped) { $fave = self::pkeyGet(array('user_id'=>$scoped->id, 'notice_id'=>$notice->id)); return ($fave instanceof Fave); } /** * Fetch a stream of favorites by profile * * @param integer $profileId Profile that faved * @param integer $offset Offset from last * @param integer $limit Number to get * * @return mixed stream of faves, use fetch() to iterate * * @todo Cache results * @todo integrate with Fave::stream() */ static function byProfile($profileId, $offset, $limit) { $fav = new Fave(); $fav->user_id = $profileId; $fav->orderBy('modified DESC'); $fav->limit($offset, $limit); $fav->find(); return $fav; } static function countByProfile(Profile $profile) { $c = Cache::instance(); if (!empty($c)) { $cnt = $c->get(Cache::key('fave:count_by_profile:'.$profile->id)); if (is_integer($cnt)) { return $cnt; } } $faves = new Fave(); $faves->user_id = $profile->id; $cnt = (int) $faves->count('notice_id'); if (!empty($c)) { $c->set(Cache::key('fave:count_by_profile:'.$profile->id), $cnt); } return $cnt; } function getURI() { if (!empty($this->uri)) { return $this->uri; } else { return self::newURI($this->user_id, $this->notice_id, $this->modified); } } static function newURI($profile_id, $notice_id, $modified) { return TagURI::mint('favor:%d:%d:%s', $profile_id, $notice_id, common_date_iso8601($modified)); } static protected $_faves = array(); /** * All faves of this notice * * @param Notice $notice A notice we wish to get faves for (may still be ArrayWrapper) * * @return array Array of Fave objects */ static public function byNotice($notice) { if (!isset(self::$_faves[$notice->id])) { self::fillFaves(array($notice->id)); } return self::$_faves[$notice->id]; } static public function fillFaves(array $notice_ids) { $faveMap = Fave::listGet('notice_id', $notice_ids); self::$_faves = array_replace(self::$_faves, $faveMap); } static public function blowCacheForProfileId($profile_id) { $cache = Cache::instance(); if ($cache) { // Faves don't happen chronologically, so we need to blow // ;last cache, too $cache->delete(Cache::key('fave:ids_by_user:'.$profile_id)); $cache->delete(Cache::key('fave:ids_by_user:'.$profile_id.';last')); $cache->delete(Cache::key('fave:ids_by_user_own:'.$profile_id)); $cache->delete(Cache::key('fave:ids_by_user_own:'.$profile_id.';last')); $cache->delete(Cache::key('fave:count_by_profile:'.$profile_id)); } } }