109 lines
2.7 KiB
PHP
109 lines
2.7 KiB
PHP
<?php defined('BLUDIT') or die('Bludit CMS.');
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class dbTags extends dbJSON
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{
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/*
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$postsIndex['tag1']['name'] = 'Tag 1';
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$postsIndex['tag1']['posts'] = array('post1','post2','post3');
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$postsIndex['tag2']['name'] = 'Tag 2';
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$postsIndex['tag2']['posts'] = array('post1','post5');
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*/
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public $dbFields = array(
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'postsIndex'=>array('inFile'=>false, 'value'=>array()),
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'pagesIndex'=>array('inFile'=>false, 'value'=>array())
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);
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function __construct()
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{
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parent::__construct(PATH_DATABASES.'tags.php');
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}
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public function getTag($slug) {
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if( isset($this->db['postsIndex'][$slug]['name']) ) {
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return $this->db['postsIndex'][$slug]['name'];
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}
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return '';
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}
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// Returns an array with all tags names
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public function getAll()
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{
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$tmp = array();
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foreach($this->db['postsIndex'] as $tagSlug=>$tagInfo) {
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$tmp[$tagSlug] = $tagInfo['name'];
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}
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// Sort low to high, by value.
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natcasesort($tmp);
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return $tmp;
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}
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// Returns an array with a list of posts keys, filtered by a page number and a tag key.
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public function getList($pageNumber, $postPerPage, $tagKey)
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{
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if( !isset($this->db['postsIndex'][$tagKey]) ) {
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Log::set(__METHOD__.LOG_SEP.'Error occurred when trying get the posts list by the tag key: '.$tagKey);
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return array();
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}
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$init = (int) $postPerPage * $pageNumber;
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$end = (int) min( ($init + $postPerPage - 1), $this->countPostsByTag($tagKey) - 1 );
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$outrange = $init<0 ? true : $init > $end;
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if(!$outrange) {
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$list = $this->db['postsIndex'][$tagKey]['posts'];
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$tmp = array_flip($list); // Change the posts keys list in the array key.
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return array_slice($tmp, $init, $postPerPage, true);
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}
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Log::set(__METHOD__.LOG_SEP.'Error occurred when trying get the list of posts, out of range?. Pagenumber: '.$pageNumber);
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return array();
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}
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public function countPostsByTag($tagKey)
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{
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if( isset($this->db['postsIndex'][$tagKey]) ) {
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return count($this->db['postsIndex'][$tagKey]['posts']);
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}
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return 0;
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}
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// Regenerate the posts index for each tag.
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// (array) $db, the $db must be sorted by date and the posts published only.
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public function reindexPosts($db)
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{
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$tagsIndex = array();
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// Foreach post
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foreach($db as $postKey=>$values)
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{
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$tags = $values['tags'];
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// Foreach tag from post
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foreach($tags as $tagKey=>$tagName)
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{
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if( isset($tagsIndex[$tagKey]) ) {
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array_push($tagsIndex[$tagKey]['posts'], $postKey);
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}
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else {
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$tagsIndex[$tagKey]['name'] = $tagName;
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$tagsIndex[$tagKey]['posts'] = array($postKey);
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}
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}
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}
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$this->db['postsIndex'] = $tagsIndex;
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if( $this->save() === false ) {
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Log::set(__METHOD__.LOG_SEP.'Error occurred when trying to save the database file.');
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return false;
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}
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return true;
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}
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} |