/** * search for some keywords in sub-sections * * This function also searches in sub-sections, with up to three levels of depth. * * @see search.php * * Modification dates are taken into account to prefer freshest information. * * @link http://www.artfulcode.net/articles/full-text-searching-mysql/ * * @param int the id of the section to look in * @param string the search string * @param float maximum score to look at * @param int the number of items to display * @param mixed the layout, if any * @return NULL on error, else an ordered array of array($score, $summary) */ public static function &search_in_section($section_id, $pattern, $offset = 1.0, $count = 10, $layout = 'search') { global $context; // sanity check if (!($pattern = trim($pattern))) { $output = NULL; return $output; } // limit the scope of the request $where = Sections::get_sql_where(); // search is restricted to one section $sections_where = ''; if ($section_id) { // look within this branch of the content tree $anchors = Sections::get_branch_at_anchor('section:' . $section_id); // the full set of sections searched $where .= " AND (sections.id IN (" . str_replace('section:', '', join(", ", $anchors)) . "))"; } // only consider live sections $where .= " AND ((sections.expiry_date is NULL) " . "OR (sections.expiry_date <= '" . NULL_DATE . "') OR (sections.expiry_date > '" . $context['now'] . "'))"; // how to compute the score for sections $score = "(MATCH(title, introduction, description)" . " AGAINST('" . SQL::escape($pattern) . "' IN BOOLEAN MODE)" . "/SQRT(GREATEST(1.1, DATEDIFF(NOW(), edit_date))))"; // the list of articles $query = "SELECT sections.*," . " " . $score . " AS score" . " FROM " . SQL::table_name('sections') . " AS sections" . " WHERE (" . $score . " < " . $offset . ") AND (" . $score . " > 0)" . " AND (" . $where . ")" . " ORDER BY score DESC" . " LIMIT " . $count; $output =& Sections::list_selected(SQL::query($query), $layout); return $output; }
/** * list alphabetically the sections related to any anchor * * Actually list sections by rank, then by title, then by date. * If you select to not use the ranking system, sections will be ordered by title only. * Else sections with a low ranking mark will appear first, * and sections with a high ranking mark will be put at the end of the list. * * Only sections matching following criteria are returned: * - section is visible (active='Y') * - section is restricted (active='R'), but surfer is a logged user * - section is restricted (active='N'), but surfer is an associate * - an expiry date has not been defined, or is not yet passed * * @param the target anchor * @param int the offset from the start of the list; usually, 0 or 1 * @param int the number of items to display * @param string the list variant, if any * @return NULL on error, else an ordered array with $url => ($prefix, $label, $suffix, $icon) * * @see sections/select.php */ public static function &list_sections_by_title_for_anchor($anchor, $offset = 0, $count = 10, $variant = 'compact') { global $context; // display active and restricted items $where = "sections.active='Y'"; if (Surfer::is_logged()) { $where .= " OR sections.active='R'"; } if (Surfer::is_empowered('S')) { $where .= " OR sections.active='N'"; } $where = '(' . $where . ')'; // only consider live sections $where .= " AND ((sections.expiry_date is NULL)" . "OR (sections.expiry_date <= '" . NULL_DATE . "') OR (sections.expiry_date > '" . $context['now'] . "'))"; // the list of sections $query = "SELECT sections.*" . "\tFROM (" . SQL::table_name('members') . " AS members" . ", " . SQL::table_name('sections') . " AS sections)" . " WHERE (members.anchor LIKE '" . SQL::escape($anchor) . "')" . "\tAND (members.member_type = 'section')" . "\tAND (members.member_id = sections.id)" . "\tAND (" . $where . ")" . " ORDER BY sections.title, sections.edit_date DESC LIMIT " . $offset . ',' . $count; // use existing listing facility $output =& Sections::list_selected(SQL::query($query), $variant); return $output; }