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<?php
/*
Question2Answer by Gideon Greenspan and contributors
http://www.question2answer.org/
File: qa-include/qa-page-default.php
Description: Controller for home page, Q&A listing page, custom pages and plugin pages
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';
// Determine whether path begins with qa or not (question and answer listing can be accessed either way)
$requestparts = explode('/', qa_request());
$explicitqa = (strtolower($requestparts[0]) == 'qa');
if ($explicitqa)
$slugs = array_slice($requestparts, 1);
elseif (strlen($requestparts[0]))
$slugs = $requestparts;
else
$slugs = array();
$countslugs = count($slugs);
// Get list of questions, other bits of information that might be useful
$userid = qa_get_logged_in_userid();
list($questions1, $questions2, $categories, $categoryid, $custompage) = qa_db_select_with_pending(
qa_db_qs_selectspec($userid, 'created', 0, $slugs, null, false, false, qa_opt_if_loaded('page_size_activity')),
qa_db_recent_a_qs_selectspec($userid, 0, $slugs),
qa_db_category_nav_selectspec($slugs, false, false, true),
$countslugs ? qa_db_slugs_to_category_id_selectspec($slugs) : null,
(($countslugs == 1) && !$explicitqa) ? qa_db_page_full_selectspec($slugs[0], false) : null
);
// First, if this matches a custom page, return immediately with that page's content
if (isset($custompage) && !($custompage['flags'] & QA_PAGE_FLAGS_EXTERNAL)) {
qa_set_template('custom-' . $custompage['pageid']);
$qa_content = qa_content_prepare();
$level = qa_get_logged_in_level();
if (!qa_permit_value_error($custompage['permit'], $userid, $level, qa_get_logged_in_flags()) || !isset($custompage['permit'])) {
$qa_content['title'] = qa_html($custompage['heading']);
$qa_content['custom'] = $custompage['content'];
if ($level >= QA_USER_LEVEL_ADMIN) {
$qa_content['navigation']['sub'] = array(
'admin/pages' => array(
'label' => qa_lang('admin/edit_custom_page'),
'url' => qa_path_html('admin/pages', array('edit' => $custompage['pageid'])),
),
);
}
} else
$qa_content['error'] = qa_lang_html('users/no_permission');
return $qa_content;
}
// Then, see if we should redirect because the 'qa' page is the same as the home page
if ($explicitqa && (!qa_is_http_post()) && !qa_has_custom_home())
qa_redirect(qa_category_path_request($categories, $categoryid), $_GET);
// Then, if there's a slug that matches no category, check page modules provided by plugins
if (!$explicitqa && $countslugs && !isset($categoryid)) {
$pagemodules = qa_load_modules_with('page', 'match_request');
$request = qa_request();
foreach ($pagemodules as $pagemodule) {
if ($pagemodule->match_request($request)) {
$tmpl = isset($custompage['pageid']) ? 'custom-' . $custompage['pageid'] : 'custom';
qa_set_template($tmpl);
return $pagemodule->process_request($request);
}
}
}
// Then, check whether we are showing a custom home page
if (!$explicitqa && !$countslugs && qa_opt('show_custom_home')) {
qa_set_template('custom');
$qa_content = qa_content_prepare();
$qa_content['title'] = qa_html(qa_opt('custom_home_heading'));
$qa_content['custom'] = qa_opt('custom_home_content');
return $qa_content;
}
// If we got this far, it's a good old-fashioned Q&A listing page
require_once QA_INCLUDE_DIR . 'app/q-list.php';
qa_set_template('qa');
$questions = qa_any_sort_and_dedupe(array_merge($questions1, $questions2));
$pagesize = qa_opt('page_size_home');
if ($countslugs) {
if (!isset($categoryid))
return include QA_INCLUDE_DIR . 'qa-page-not-found.php';
$categorytitlehtml = qa_html($categories[$categoryid]['title']);
$sometitle = qa_lang_html_sub('main/recent_qs_as_in_x', $categorytitlehtml);
$nonetitle = qa_lang_html_sub('main/no_questions_in_x', $categorytitlehtml);
} else {
$sometitle = qa_lang_html('main/recent_qs_as_title');
$nonetitle = qa_lang_html('main/no_questions_found');
}
// Prepare and return content for theme for Q&A listing page
$qa_content = qa_q_list_page_content(
$questions, // questions
$pagesize, // questions per page
0, // start offset
null, // total count (null to hide page links)
$sometitle, // title if some questions
$nonetitle, // title if no questions
$categories, // categories for navigation
$categoryid, // selected category id
true, // show question counts in category navigation
$explicitqa ? 'qa/' : '', // prefix for links in category navigation
qa_opt('feed_for_qa') ? 'qa' : null, // prefix for RSS feed paths (null to hide)
(count($questions) < $pagesize) // suggest what to do next
? qa_html_suggest_ask($categoryid)
: qa_html_suggest_qs_tags(qa_using_tags(), qa_category_path_request($categories, $categoryid)),
null, // page link params
null // category nav params
);
return $qa_content;