drupal6: ปรับปรุงมอดูล Thai Search
Submitted by wd on Fri, 2008-01-18 12:06
ยังไม่เข้าใจการทำงานมอดูลอย่างจริงจัง ตอนนี้ใช้วิธีตัดแปะจาก Core Module ไปก่อน
- ปรับปรุงให้มีฟอร์มสำหรับใส่คำค้นในหน้าหลัก ซึ่งจะทำให้สามารถเปิดใช้เมนู Thaisearch ได้ด้วย
- จัดเรียงตามลำดับน้ำหนัก, และเวลา
- ใส่คำค้นได้หลายคำ โดยจัดน้ำหนักให้ด้วย - ทุกคำ น้ำหนัก10, คำแรกน้ำหนัก 3, คำที่เหลือ น้ำหนัก 1 และเพิ่มน้ำหนักให้กับส่วนที่ค้น คือ node.title น้ำหนัก 10, node.body น้ำหนัก 2, comments.comment น้ำหนัก 1
- 50-01-25 เพิ่ม
block
เพิ่ม css เพิ่มwatchdog
- รู้สึกจะมีปัญหากับ Drupal เรื่อง HTTP request ยังไม่แน่ใจว่าเป็นที่ใคร วิธีแก้คือ ย้ายทุกมอดูลออกจาก sites/all/modules -> สั่ง update.php -> สั่งอัปเดตด้วยมือ
admin/reports/updates/check
-> ย้ายมอดูลกลับ
ดาวน์โหลดได้แล้ว
- thaisearch รุ่นแรก
- 20090705 - thaisearch-6.x-0.1.tar.gz ปรับให้ใช้กับ postgres ได้
ติดตั้งตามวิธีปกติ
$ cd /var/www/drupal/sites/all/modules
$ wget http://www.thaitux.info/files/modules/thaisearch-6.x-0.1.tar.gz
$ tar xfz thaisearch-6.x-0.1.tar.gz
หรือเขียนโค๊ดเอง
เพิ่มไฟล์ css
$ cd /var/www/drupal/sites/all/modules/thaisearch
$ vi thaisearch.css
/* $Id: thaisearch.css,v 1.3 2007/10/31 18:06:38 dries Exp $ */ .block-thaisearch .form-item { display: inline; margin: 0; padding: 0; }
แก้เฉพาะไฟล์ thaisearch.module
$ vi thaisearch.module
<?php // $Id: thaisearch.module,v 1.13 2007/10/17 19:38:36 litwol Exp $ // wd's: modify to thaisearch.module, simple search Thai words. v.2008/1/24. /** * @file * This is an example outlining how a module can be used to display a * custom page at a given URL. */ /** * Implementation of hook_help(). * * Throughout Drupal, hook_help() is used to display help text at the top of * pages. Some other parts of Drupal pages get explanatory text from these hooks * as well. We use it here to illustrate how to add help text to the pages your * module defines. */ function thaisearch_help($path, $arg) { switch ($path) { case 'thaisearch': // Here is some help text for a custom page. return t('Search thai words. Type in URL: <code><strong>thaisearch/<em>WORD1 WORD2 ...</em></strong></code><br />Words separated by space, quote or double-quote are allowed.<br /><code>a "b c" d</code> gives <code>"<strong>a</strong>"</code> , <code>"<strong>b c</strong>"</code> , <code>"<strong>d</strong>"</code>'); case 'search#noresults': return t('<ul> <li>Check if your spelling is correct.</li> <li>Remove quotes around phrases to match each word individually: <em>"blue smurf"</em> will match less than <em>blue smurf</em>.</li> <li>Consider loosening your query with <em>OR</em>: <em>blue smurf</em> will match less than <em>blue OR smurf</em>.</li> </ul>'); } } /** * Implementation of hook_perm(). * * Since the access to our new custom pages will be granted based on * special permissions, we need to define what those permissions are here. * This ensures that they are available to enable on the user role * administration pages. */ function thaisearch_perm() { return array('access thaisearch'); } /** * Implementation of hook_block(). */ function thaisearch_block($op='list', $delta=0) { // listing of blocks, such as on the admin/block page if ($op == "list") { $block[0]["info"] = t('Thai Search'); return $block; } else if ($op == 'view' && user_access('access thaisearch')) { $block['content'] = drupal_get_form('thaisearch_form', $keys, $size=15); $block['subject'] = t('Thai Search'); return $block; } } /** * Implementation of hook_menu(). * * You must implement hook_menu() to emit items to place in the main menu. * This is a required step for modules wishing to display their own pages, * because the process of creating the links also tells Drupal what * callback function to use for a given URL. The menu items returned * here provide this information to the menu system. * * With the below menu definitions, URLs will be interpreted as follows: * * If the user accesses http://example.com/?q=foo, then the menu system * will first look for a menu item with that path. In this case it will * find a match, and execute thaisearch_foo(). * * If the user accesses http://example.com/?q=bar, no match will be found, * and a 404 page will be displayed. * * If the user accesses http://example.com/?q=bar/baz, the menu system * will find a match and execute thaisearch_baz(). * * If the user accesses http://example.com/?q=bar/baz/1/2, the menu system * will first look for bar/baz/1/2. Not finding a match, it will look for * bar/baz/1/%. Again not finding a match, it will look for bar/baz/%/2. Yet * again not finding a match, it will look for bar/baz/%/%. This time it finds * a match, and so will execute thaisearch_baz(1, 2). Note the parameters * being passed; this is a very useful technique. */ function thaisearch_menu() { // By using the MENU_CALLBACK type, we can register the callback for this // path but not have the item show up in the menu; the admin is not allowed // to enable the item in the menu, either. // // Notice that the 'page arguments' is an array of numbers. These will be // replaced with the corresponding parts of the menu path. In this case a 0 // would be replaced by 'thaisearch', and 1 will be Thai words to search. // These will be passed as arguments to the thaisearch_thaisearch() function. $items['thaisearch/%'] = array( 'title' => 'Thai Search', 'page callback' => 'thaisearch_thaisearch', 'page arguments' => array(1), 'access arguments' => array('access thaisearch'), // 'type' => MENU_CALLBACK, ); $items['thaisearch'] = array( 'title' => 'Thai Search', 'page callback' => 'thaisearch_view', 'access arguments' => array('access thaisearch'), 'type' => MENU_SUGGESTED_ITEM, ); return $items; } /** * Form builder; Output a search form for the search block and the theme's search box. * * @ingroup forms * @see search_box_form_submit() * @see theme_search_box_form() */ function thaisearch_form(&$form_state, $form_id, $size=25) { // Add CSS drupal_add_css(drupal_get_path('module', 'thaisearch') .'/thaisearch.css', 'module', 'all', FALSE); $form['keys'] = array( '#title' => t('Search Thai words'), '#type' => 'textfield', '#size' => $size, '#default_value' => '', '#attributes' => array('title' => t('Enter the terms you wish to search for.')), ); $form['submit'] = array('#type' => 'submit', '#value' => t('Search')); $form['#submit'][] = 'thaisearch_form_submit'; $form['#validate'][] = 'thaisearch_form_validate'; return $form; } /** * Process a block search form submission. */ function thaisearch_form_submit($form, &$form_state) { $keys = $form['keys']['#value']; $form_state['redirect'] = 'thaisearch/'. $keys; } /** * Helper function for grabbing search keys. */ function thaisearch_get_keys() { static $return; if (!isset($return)) { // Extract keys as remainder of path // Note: support old GET format of searches for existing links. $path = explode('/', $_GET['q'], 2); $keys = empty($_REQUEST['keys']) ? '' : $_REQUEST['keys']; $return = count($path) == 2 ? $path[1] : $keys; } return $return; } /** * Menu callback; presents the search form and/or search results. */ function thaisearch_view() { // Search form submits with POST but redirects to GET. This way we can keep // the search query URL clean as a whistle: // search/type/keyword+keyword if (!isset($_POST['form_id'])) { $keys = thaisearch_get_keys(); // Only perform search if there is non-whitespace search term: $results = ''; if (trim($keys)) { // Collect the search results: $results = thaisearch_thaisearch($keys); if ($results) { $results = theme('box', t('Search results'), $results); } else { $results = theme('box', t('Your search yielded no results'), thaisearch_help('search#noresults', drupal_help_arg())); } } // Construct the search form. $output = drupal_get_form('thaisearch_form', $keys); $output .= $results; return $output; } return drupal_get_form('thaisearch_form', empty($keys) ? '' : $keys); } /** * Helper function: is word in string */ function _in_string($string, $word) { if (strpos($string, $word) === FALSE) { return FALSE; } else { return TRUE; } } /** * Helper function: get array of wordlist from words * 'a "b c" d' => ['a "b c" d', 'a', 'b c', 'd'] */ function _get_wordlist($string) { $temp = trim($string); $wordlist = array(); $wordlist[] = $string; while (strlen($temp) > 0) { $m = 9999; if (_in_string($temp, " ")) { $p1 = strpos($temp, " "); $m = ($m < $p1) ? $m : $p1; } if (_in_string($temp, '"')) { $p2 = strpos($temp, '"'); $m = ($m < $p2) ? $m : $p2; } if (_in_string($temp, "'")) { $p3 = strpos($temp, "'"); $m = ($m < $p3) ? $m : $p3; } if ($m == $p1) { $a = explode(" ",$temp,2); $wordlist[] = $a[0]; $temp = trim($a[1]); } elseif ($m == $p2 and substr_count($temp, '"') > 1 and (_in_string($temp, '" ') or substr($temp, -1) == '"')) { $a = explode('"',$temp,3); $wordlist[] = $a[1]; $temp = trim($a[2]); } elseif ($m == $p3 and substr_count($temp, "'") > 1 and (_in_string($temp, "' ") or substr($temp, -1) == "'")) { $a = explode("'",$temp,3); $wordlist[] = $a[1]; $temp = trim($a[2]); } else { $wordlist[] = $temp; $temp = ''; } } return($wordlist); } /** * Helper function for array_walk in thaisearch_except. */ function _thaisearch_excerpt_replace(&$text) { $text = preg_quote($text, '/'); } /** * Helper function for trim text */ function _trim_text($text, $pos = 'first', $length = 50) { $l = drupal_strlen($text); if ($l > $length) { switch ($pos) { case 'first': return ' ...'.drupal_substr($text, $l-$length, $length); case 'middle': $b = intval($length / 2); return drupal_substr($text, 0, $b).'...'.drupal_substr($text, $l-$b, $b); case 'last': return drupal_substr($text, 0, $length).'... '; } } return $text; } /** * A more complex page callback that takes arguments. * * The arguments are passed in from the page URL. The in our hook_menu * implementation we instructed the menu system to extract the last two * parameters of the path and pass them to this function as arguments. * do search from node_revision.title, node_revision.body and comments.comment */ function thaisearch_thaisearch($keys) { // Log the search keys: watchdog('thaisearchsearch', '%keys (@type).', array('%keys' => $keys, '@type' => module_invoke($type, 'thaisearch', 'name')), WATCHDOG_NOTICE, l(t('results'), 'thaisearch/'. $type .'/'. $keys)); $max_item = 50; $wordlist = _get_wordlist($keys); $qarray = array(); $arguments = array(); for ($iwl = 0; $iwl < count($wordlist); $iwl++) { // first argument in full word: allscore*10 switch ($iwl) { case 0: $w = 10; case 1: $w = 2; default: $w = 1; } // node.title: score*10 $qarray[] = " SELECT ".strval($w*10)." AS score, n.nid, 0 AS cid, n.title, n.body, n.timestamp FROM {node_revisions} n WHERE n.title LIKE '%%%s%%' "; // node.body: score*2 $qarray[] = " SELECT ".strval($w*2)." AS score, n.nid, 0 AS cid, n.title, n.body, n.timestamp FROM {node_revisions} n WHERE n.body LIKE '%%%s%%' "; // comments.comment: score*1 $qarray[] = " SELECT ".strval($w*1)." AS score, c.nid, c.cid, n.title, c.comment, c.timestamp AS body FROM {comments} c INNER JOIN {node_revisions} n ON n.nid = c.nid WHERE c.comment LIKE '%%%s%%' "; $arguments = array_merge($arguments, array($wordlist[$iwl], $wordlist[$iwl], $wordlist[$iwl])); } $q = 'SELECT SUM(score) AS score, nid, cid, title, body, timestamp FROM ('.implode(' UNION ALL ',$qarray).') t GROUP BY t.nid, t.cid, t.title, t.body, t.timestamp ORDER BY score DESC, nid DESC, timestamp DESC'; $sql_count = 'SELECT COUNT(*) AS num FROM ('.$q.') t'; $count = db_fetch_object(db_query($sql_count, $arguments)); $found = $count->num; $query = db_query_range($q, $arguments, 0, $max_item); // highlight words in trimmed output $dlist = ''; $max_length= 50; while ($links = db_fetch_object($query)) { // highlight words $text = ' '. strip_tags(str_replace(array('<', '>'), array(' <', '> '), $links->body)) .' '; array_walk($wordlist, '_thaisearch_excerpt_replace'); $text = preg_replace('/('. implode('|', $wordlist) .')/iu', '<strong>\0</strong>', $text); // trim output $text_front = ''; if (_in_string($text, '<strong>')) { $item_count = 0; $text_array = explode('<strong>', $text, 2); $text_front = _trim_text($text_array[0], 'first', $max_length).'<strong>'; $text_array = explode('</strong>', $text_array[1], 2); $text_front .= $text_array[0].'</strong>'; $text = $text_array[1]; while (_in_string($text, '<strong>') and $item_count < 5) { $item_count++; $text_array = explode('<strong>', $text, 2); $text_front .= _trim_text($text_array[0], 'middle', $max_length).'<strong>'; $text_array = explode('</strong>', $text_array[1], 2); $text_front .= $text_array[0].'</strong>'; if (_in_string($text_array[1], '<strong>')) { $text = $text_array[1]; } else { $text = _trim_text($text_array[1], 'last', $max_length); } } $text_front .= _trim_text($text, 'last', $max_length); } else { $text_front = truncate_utf8($text, $max_length, TRUE); } $dlist .= '<dt><strong>'.l($links->title, 'node/'.$links->nid).'</strong></dt>'; $dlist .= '<dd>'.$text_front.'</dd></strong><br />'; } $output = thaisearch_help('thaisearch','').'<br />'; $output .= drupal_get_form('thaisearch_form', $keys); $output .= t('Search words: <strong>'.$keys.'</strong>, found: <strong>'.$found.'</strong><br />'); if ($dlist) { $output .= theme('box', t('Search results'), '<br /><dl>'.$dlist.'</dl>', 10, 0); } else { $output .= theme('box', t('Your search yielded no results')); } return $output; } ?>
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