Файл: qa-include/qa-page-question.php
Строк: 666
<?php
/*
Question2Answer (c) Gideon Greenspan
http://www.question2answer.org/
File: qa-include/qa-page-question.php
Version: See define()s at top of qa-include/qa-base.php
Description: Controller for question page (only viewing functionality here)
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.'qa-app-cookies.php';
require_once QA_INCLUDE_DIR.'qa-app-format.php';
require_once QA_INCLUDE_DIR.'qa-db-selects.php';
require_once QA_INCLUDE_DIR.'qa-util-sort.php';
require_once QA_INCLUDE_DIR.'qa-util-string.php';
require_once QA_INCLUDE_DIR.'qa-app-captcha.php';
require_once QA_INCLUDE_DIR.'qa-page-question-view.php';
require_once QA_INCLUDE_DIR.'qa-app-updates.php';
$questionid=qa_request_part(0);
$userid=qa_get_logged_in_userid();
$cookieid=qa_cookie_get();
// Get information about this question
@list($question, $childposts, $achildposts, $parentquestion, $closepost, $extravalue, $categories, $favorite)=qa_db_select_with_pending(
qa_db_full_post_selectspec($userid, $questionid),
qa_db_full_child_posts_selectspec($userid, $questionid),
qa_db_full_a_child_posts_selectspec($userid, $questionid),
qa_db_post_parent_q_selectspec($questionid),
qa_db_post_close_post_selectspec($questionid),
qa_db_post_meta_selectspec($questionid, 'qa_q_extra'),
qa_db_category_nav_selectspec($questionid, true, true, true),
isset($userid) ? qa_db_is_favorite_selectspec($userid, QA_ENTITY_QUESTION, $questionid) : null
);
if ($question['basetype']!='Q') // don't allow direct viewing of other types of post
$question=null;
if (isset($question)) {
$question['extra']=$extravalue;
$answers=qa_page_q_load_as($question, $childposts);
$commentsfollows=qa_page_q_load_c_follows($question, $childposts, $achildposts);
$question=$question+qa_page_q_post_rules($question, null, null, $childposts); // array union
if ($question['selchildid'] && (@$answers[$question['selchildid']]['type']!='A'))
$question['selchildid']=null; // if selected answer is hidden or somehow not there, consider it not selected
foreach ($answers as $key => $answer) {
$answers[$key]=$answer+qa_page_q_post_rules($answer, $question, $answers, $achildposts);
$answers[$key]['isselected']=($answer['postid']==$question['selchildid']);
}
foreach ($commentsfollows as $key => $commentfollow) {
$parent=($commentfollow['parentid']==$questionid) ? $question : @$answers[$commentfollow['parentid']];
$commentsfollows[$key]=$commentfollow+qa_page_q_post_rules($commentfollow, $parent, $commentsfollows, null);
}
}
$usecaptcha=qa_user_use_captcha();
// Deal with question not found or not viewable, otherwise report the view event
if (!isset($question))
return include QA_INCLUDE_DIR.'qa-page-not-found.php';
if (!$question['viewable']) {
$qa_content=qa_content_prepare();
if ($question['queued'])
$qa_content['error']=qa_lang_html('question/q_waiting_approval');
elseif ($question['flagcount'] && !isset($question['lastuserid']))
$qa_content['error']=qa_lang_html('question/q_hidden_flagged');
elseif ($question['authorlast'])
$qa_content['error']=qa_lang_html('question/q_hidden_author');
else
$qa_content['error']=qa_lang_html('question/q_hidden_other');
$qa_content['suggest_next']=qa_html_suggest_qs_tags(qa_using_tags());
return $qa_content;
}
$permiterror=qa_user_permit_error('permit_view_q_page');
if ( $permiterror && (qa_is_human_probably() || !qa_opt('allow_view_q_bots')) ) {
$qa_content=qa_content_prepare();
$topage=qa_q_request($questionid, $question['title']);
switch ($permiterror) {
case 'login':
$qa_content['error']=qa_insert_login_links(qa_lang_html('main/view_q_must_login'), $topage);
break;
case 'confirm':
$qa_content['error']=qa_insert_login_links(qa_lang_html('main/view_q_must_confirm'), $topage);
break;
default:
$qa_content['error']=qa_lang_html('users/no_permission');
break;
}
return $qa_content;
}
// If we're responding to an HTTP POST, include file that handles all posting/editing/etc... logic
// This is in a separate file because it's a *lot* of logic, and will slow down ordinary page views
$pagestart=qa_get_start();
$pagestate=qa_get_state();
$showid=qa_get('show');
$pageerror=null;
$formtype=null;
$formpostid=null;
$jumptoanchor=null;
$commentsall=null;
if (substr($pagestate, 0, 13)=='showcomments-') {
$commentsall=substr($pagestate, 13);
$pagestate=null;
} elseif (isset($showid)) {
foreach ($commentsfollows as $comment)
if ($comment['postid']==$showid) {
$commentsall=$comment['parentid'];
break;
}
}
if (qa_is_http_post() || strlen($pagestate))
require QA_INCLUDE_DIR.'qa-page-question-post.php';
$formrequested=isset($formtype);
if ((!$formrequested) && $question['answerbutton']) {
$immedoption=qa_opt('show_a_form_immediate');
if ( ($immedoption=='always') || (($immedoption=='if_no_as') && (!$question['isbyuser']) && (!$question['acount'])) )
$formtype='a_add'; // show answer form by default
}
// Get information on the users referenced
$usershtml=qa_userids_handles_html(array_merge(array($question), $answers, $commentsfollows), true);
// Prepare content for theme
$qa_content=qa_content_prepare(true, array_keys(qa_category_path($categories, $question['categoryid'])));
if (isset($userid) && !$formrequested)
$qa_content['favorite']=qa_favorite_form(QA_ENTITY_QUESTION, $questionid, $favorite,
qa_lang($favorite ? 'question/remove_q_favorites' : 'question/add_q_favorites'));
$qa_content['script_rel'][]='qa-content/qa-question.js?'.QA_VERSION;
$qa_content['form']=array(
'tags' => 'METHOD="POST" ACTION="'.qa_self_html().'" NAME="q_page_form"',
'hidden' => array(
'qa_click' => '', // for simulating clicks in Javascript
),
);
if (isset($pageerror))
$qa_content['error']=$pageerror; // might also show voting error set in qa-index.php
elseif ($question['queued'])
$qa_content['error']=$question['isbyuser'] ? qa_lang_html('question/q_your_waiting_approval') : qa_lang_html('question/q_waiting_your_approval');
if ($question['hidden'])
$qa_content['hidden']=true;
qa_sort_by($commentsfollows, 'created');
// Prepare content for the question...
if ($formtype=='q_edit') { // ...in edit mode
$qa_content['title']=qa_lang_html($question['editable'] ? 'question/edit_q_title' :
(qa_using_categories() ? 'question/recat_q_title' : 'question/retag_q_title'));
$qa_content['form_q_edit']=qa_page_q_edit_q_form($qa_content, $question, @$qin, @$qerrors, $completetags, $categories);
$qa_content['q_view']['raw']=$question;
} else { // ...in view mode
$qa_content['q_view']=qa_page_q_question_view($question, $parentquestion, $closepost, $usershtml, $formrequested);
$qa_content['title']=$qa_content['q_view']['title'];
$qa_content['description']=qa_html(qa_shorten_string_line(qa_viewer_text($question['content'], $question['format']), 150));
$categorykeyword=@$categories[$question['categoryid']]['title'];
$qa_content['keywords']=qa_html(implode(',', array_merge(
(qa_using_categories() && strlen($categorykeyword)) ? array($categorykeyword) : array(),
qa_tagstring_to_tags($question['tags'])
))); // as far as I know, META keywords have zero effect on search rankings or listings, but many people have asked for this
}
// Prepare content for an answer being edited (if any) or to be added
if ($formtype=='a_edit') {
$qa_content['a_form']=qa_page_q_edit_a_form($qa_content, 'a'.$formpostid, $answers[$formpostid],
$question, $answers, $commentsfollows, @$aeditin[$formpostid], @$aediterrors[$formpostid]);
$qa_content['a_form']['c_list']=qa_page_q_comment_follow_list($answers[$formpostid], $commentsfollows,
true, $usershtml, $formrequested, $formpostid);
$jumptoanchor='a'.$formpostid;
} elseif (($formtype=='a_add') || ($question['answerbutton'] && !$formrequested)) {
$qa_content['a_form']=qa_page_q_add_a_form($qa_content, 'anew', $usecaptcha, $questionid, @$anewin, @$anewerrors, $formtype=='a_add', $formrequested);
if ($formrequested)
$jumptoanchor='anew';
elseif ($formtype=='a_add')
$qa_content['script_onloads'][]=array(
"qa_element_revealed=document.getElementById('anew')"
);
}
// Prepare content for comments on the question, plus add or edit comment forms
if ($formtype=='q_close') {
$qa_content['q_view']['c_form']=qa_page_q_close_q_form($qa_content, $question, 'close', @$closein, @$closeerrors);
$jumptoanchor='close';
} elseif ((($formtype=='c_add') && ($formpostid==$questionid)) || ($question['commentbutton'] && !$formrequested) ) { // ...to be added
$qa_content['q_view']['c_form']=qa_page_q_add_c_form($qa_content, $questionid, $questionid, 'c'.$questionid,
$usecaptcha, @$cnewin[$questionid], @$cnewerrors[$questionid], $formtype=='c_add');
if (($formtype=='c_add') && ($formpostid==$questionid)) {
$jumptoanchor='c'.$questionid;
$commentsall=$questionid;
}
} elseif (($formtype=='c_edit') && (@$commentsfollows[$formpostid]['parentid']==$questionid)) { // ...being edited
$qa_content['q_view']['c_form']=qa_page_q_edit_c_form($qa_content, 'c'.$formpostid, $commentsfollows[$formpostid],
@$ceditin[$formpostid], @$cediterrors[$formpostid]);
$jumptoanchor='c'.$formpostid;
$commentsall=$questionid;
}
$qa_content['q_view']['c_list']=qa_page_q_comment_follow_list($question, $commentsfollows, $commentsall==$questionid,
$usershtml, $formrequested, $formpostid); // ...for viewing
// Prepare content for existing answers (could be added to by Ajax)
$qa_content['a_list']=array(
'tags' => 'ID="a_list"',
'as' => array(),
);
// sort according to the site preferences
if (qa_opt('sort_answers_by')=='votes') {
foreach ($answers as $answerid => $answer)
$answers[$answerid]['sortvotes']=$answer['downvotes']-$answer['upvotes'];
qa_sort_by($answers, 'sortvotes', 'created');
} else
qa_sort_by($answers, 'created');
// further changes to ordering to deal with queued, hidden and selected answers
$countfortitle=$question['acount'];
$nextposition=10000;
$answerposition=array();
foreach ($answers as $answerid => $answer)
if ($answer['viewable']) {
$position=$nextposition++;
if ($answer['hidden'])
$position+=10000;
elseif ($answer['queued']) {
$position-=10000;
$countfortitle++; // include these in displayed count
} elseif ($answer['isselected'] && qa_opt('show_selected_first'))
$position-=5000;
$answerposition[$answerid]=$position;
}
asort($answerposition, SORT_NUMERIC);
// extract IDs and prepare for pagination
$answerids=array_keys($answerposition);
$countforpages=count($answerids);
$pagesize=qa_opt('page_size_q_as');
// see if we need to display a particular answer
if (isset($showid)) {
if (isset($commentsfollows[$showid]))
$showid=$commentsfollows[$showid]['parentid'];
$position=array_search($showid, $answerids);
if (is_numeric($position))
$pagestart=floor($position/$pagesize)*$pagesize;
}
// set the canonical url based on possible pagination
$qa_content['canonical']=qa_path_html(qa_q_request($question['postid'], $question['title']),
($pagestart>0) ? array('start' => $pagestart) : null, qa_opt('site_url'));
// build the actual answer list
$answerids=array_slice($answerids, $pagestart, $pagesize);
foreach ($answerids as $answerid) {
$answer=$answers[$answerid];
if (!(($formtype=='a_edit') && ($formpostid==$answerid))) {
$a_view=qa_page_q_answer_view($question, $answer, $answer['isselected'], $usershtml, $formrequested);
// Prepare content for comments on this answer, plus add or edit comment forms
if ((($formtype=='c_add') && ($formpostid==$answerid)) || ($answer['commentbutton'] && !$formrequested) ) { // ...to be added
$a_view['c_form']=qa_page_q_add_c_form($qa_content, $questionid, $answerid, 'c'.$answerid,
$usecaptcha, @$cnewin[$answerid], @$cnewerrors[$answerid], $formtype=='c_add');
if (($formtype=='c_add') && ($formpostid==$answerid)) {
$jumptoanchor='c'.$answerid;
$commentsall=$answerid;
}
} else if (($formtype=='c_edit') && (@$commentsfollows[$formpostid]['parentid']==$answerid)) { // ...being edited
$a_view['c_form']=qa_page_q_edit_c_form($qa_content, 'c'.$formpostid, $commentsfollows[$formpostid],
@$ceditin[$formpostid], @$cediterrors[$formpostid]);
$jumptoanchor='c'.$formpostid;
$commentsall=$answerid;
}
$a_view['c_list']=qa_page_q_comment_follow_list($answer, $commentsfollows, $commentsall==$answerid,
$usershtml, $formrequested, $formpostid); // ...for viewing
// Add the answer to the list
$qa_content['a_list']['as'][]=$a_view;
}
}
if ($countfortitle==1)
$qa_content['a_list']['title']=qa_lang_html('question/1_answer_title');
elseif ($countfortitle>0)
$qa_content['a_list']['title']=qa_lang_html_sub('question/x_answers_title', $countfortitle);
$qa_content['a_list']['title']='<SPAN ID="a_list_title">'.@$qa_content['a_list']['title'].'</SPAN>';
if (!$formrequested)
$qa_content['page_links']=qa_html_page_links(qa_request(), $pagestart, $pagesize, $countforpages, qa_opt('pages_prev_next'), array(), false, 'a_list_title');
// Some generally useful stuff
if (qa_using_categories() && count($categories))
$qa_content['navigation']['cat']=qa_category_navigation($categories, $question['categoryid']);
if (isset($jumptoanchor))
$qa_content['script_onloads'][]=array(
'qa_scroll_page_to($("#"+'.qa_js($jumptoanchor).').offset().top);'
);
// Determine whether this request should be counted for page view statistics
if (
qa_opt('do_count_q_views') &&
(!$formrequested) &&
(!qa_is_http_post()) &&
qa_is_human_probably() &&
( (!$question['views']) || ( // if it has more than zero views
( ($question['lastviewip']!=qa_remote_ip_address()) || (!isset($question['lastviewip'])) ) && // then it must be different IP from last view
( ($question['createip']!=qa_remote_ip_address()) || (!isset($question['createip'])) ) && // and different IP from the creator
( ($question['userid']!=$userid) || (!isset($question['userid'])) ) && // and different user from the creator
( ($question['cookieid']!=$cookieid) || (!isset($question['cookieid'])) ) // and different cookieid from the creator
) )
)
$qa_content['inc_views_postid']=$questionid;
return $qa_content;
/*
Omit PHP closing tag to help avoid accidental output
*/