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<?php
/*
Question2Answer by Gideon Greenspan and contributors
http://www.question2answer.org/
File: qa-include/qa-page-categories.php
Description: Controller for page listing categories
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
More about this license: http://www.question2answer.org/license.php
*/
if (!defined('QA_VERSION')) { // don't allow this page to be requested directly from browser
header('Location: ../');
exit;
}
require_once QA_INCLUDE_DIR . 'db/selects.php';
require_once QA_INCLUDE_DIR . 'app/format.php';
$categoryslugs = qa_request_parts(1);
$countslugs = count($categoryslugs);
// Get information about appropriate categories and redirect to questions page if category has no sub-categories
$userid = qa_get_logged_in_userid();
list($categories, $categoryid, $favoritecats) = qa_db_select_with_pending(
qa_db_category_nav_selectspec($categoryslugs, false, false, true),
$countslugs ? qa_db_slugs_to_category_id_selectspec($categoryslugs) : null,
isset($userid) ? qa_db_user_favorite_categories_selectspec($userid) : null
);
if ($countslugs && !isset($categoryid))
return include QA_INCLUDE_DIR . 'qa-page-not-found.php';
// Function for recursive display of categories
function qa_category_nav_to_browse(&$navigation, $categories, $categoryid, $favoritemap)
{
foreach ($navigation as $key => $navlink) {
$category = $categories[$navlink['categoryid']];
if (!$category['childcount'])
unset($navigation[$key]['url']);
elseif ($navlink['selected']) {
$navigation[$key]['state'] = 'open';
$navigation[$key]['url'] = qa_path_html('categories/' . qa_category_path_request($categories, $category['parentid']));
} else
$navigation[$key]['state'] = 'closed';
if (@$favoritemap[$navlink['categoryid']])
$navigation[$key]['favorited'] = true;
$navigation[$key]['note'] =
' - <a href="'.qa_path_html('questions/'.implode('/', array_reverse(explode('/', $category['backpath'])))).'">'.( ($category['qcount']==1)
? qa_lang_html_sub('main/1_question', '1', '1')
: qa_lang_html_sub('main/x_questions', number_format($category['qcount']))
).'</a>';
if (strlen($category['content']))
$navigation[$key]['note'] .= qa_html(' - ' . $category['content']);
if (isset($navlink['subnav']))
qa_category_nav_to_browse($navigation[$key]['subnav'], $categories, $categoryid, $favoritemap);
}
}
// Prepare content for theme
$qa_content = qa_content_prepare(false, array_keys(qa_category_path($categories, $categoryid)));
$qa_content['title'] = qa_lang_html('misc/browse_categories');
if (count($categories)) {
$navigation = qa_category_navigation($categories, $categoryid, 'categories/', false);
unset($navigation['all']);
$favoritemap = array();
if (isset($favoritecats))
foreach ($favoritecats as $category)
$favoritemap[$category['categoryid']] = true;
qa_category_nav_to_browse($navigation, $categories, $categoryid, $favoritemap);
$qa_content['nav_list'] = array(
'nav' => $navigation,
'type' => 'browse-cat',
);
} else {
$qa_content['title'] = qa_lang_html('main/no_categories_found');
$qa_content['suggest_next'] = qa_html_suggest_qs_tags(qa_using_tags());
}
return $qa_content;