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Implement correct behavior for min_id in boundary pagination

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- The previous behavior of since_id systematically showed the most recent results
This commit is contained in:
Hypolite Petovan 2020-10-12 23:45:02 -04:00
parent e0a6b90316
commit 4427876c05
10 changed files with 101 additions and 59 deletions
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44
src/Module/Conversation/Community.php
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@ -44,7 +44,7 @@ class Community extends BaseModule
protected static $content;
protected static $accounttype;
protected static $itemsPerPage;
protected static $since_id;
protected static $min_id;
protected static $max_id;
protected static $item_id;
@ -98,8 +98,8 @@ class Community extends BaseModule
}
$query_parameters = [];
if (!empty($_GET['since_id'])) {
$query_parameters['since_id'] = $_GET['since_id'];
if (!empty($_GET['min_id'])) {
$query_parameters['min_id'] = $_GET['min_id'];
}
if (!empty($_GET['max_id'])) {
$query_parameters['max_id'] = $_GET['max_id'];
@ -247,7 +247,7 @@ class Community extends BaseModule
self::$item_id = 0;
}
self::$since_id = $_GET['since_id'] ?? null;
self::$min_id = $_GET['min_id'] ?? null;
self::$max_id = $_GET['max_id'] ?? null;
self::$max_id = $_GET['last_commented'] ?? self::$max_id;
}
@ -263,7 +263,7 @@ class Community extends BaseModule
*/
protected static function getItems()
{
$items = self::selectItems(self::$since_id, self::$max_id, self::$item_id, self::$itemsPerPage);
$items = self::selectItems(self::$min_id, self::$max_id, self::$item_id, self::$itemsPerPage);
$maxpostperauthor = (int) DI::config()->get('system', 'max_author_posts_community_page');
if ($maxpostperauthor != 0 && self::$content == 'local') {
@ -288,14 +288,14 @@ class Community extends BaseModule
// If we're looking at a "previous page", the lookup continues forward in time because the list is
// sorted in chronologically decreasing order
if (isset(self::$since_id)) {
self::$since_id = $items[0]['commented'];
if (isset(self::$min_id)) {
self::$min_id = $items[0]['commented'];
} else {
// In any other case, the lookup continues backwards in time
self::$max_id = $items[count($items) - 1]['commented'];
}
$items = self::selectItems(self::$since_id, self::$max_id, self::$item_id, self::$itemsPerPage);
$items = self::selectItems(self::$min_id, self::$max_id, self::$item_id, self::$itemsPerPage);
}
} else {
$selected_items = $items;
@ -307,17 +307,15 @@ class Community extends BaseModule
/**
* Database query for the comunity page
*
* @param $since_id
* @param $min_id
* @param $max_id
* @param $itemspage
* @return array
* @throws \Exception
* @TODO Move to repository/factory
*/
private static function selectItems($since_id, $max_id, $item_id, $itemspage)
private static function selectItems($min_id, $max_id, $item_id, $itemspage)
{
$r = false;
if (self::$content == 'local') {
if (!is_null(self::$accounttype)) {
$condition = ["`wall` AND `origin` AND `private` = ? AND `owner`.`contact-type` = ?", Item::PUBLIC, self::$accounttype];
@ -334,6 +332,8 @@ class Community extends BaseModule
return [];
}
$params = ['order' => ['commented' => true], 'limit' => $itemspage];
if (!empty($item_id)) {
$condition[0] .= " AND `iid` = ?";
$condition[] = $item_id;
@ -348,14 +348,26 @@ class Community extends BaseModule
$condition[] = $max_id;
}
if (isset($since_id)) {
if (isset($min_id)) {
$condition[0] .= " AND `commented` > ?";
$condition[] = $since_id;
$condition[] = $min_id;
// Previous page case: we want the items closest to min_id but for that we need to reverse the query order
if (!isset($max_id)) {
$params['order']['commented'] = false;
}
}
}
$r = Item::selectThreadForUser(0, ['uri', 'commented', 'author-link'], $condition, ['order' => ['commented' => true], 'limit' => $itemspage]);
$r = Item::selectThreadForUser(0, ['uri', 'commented', 'author-link'], $condition, $params);
return DBA::toArray($r);
$items = DBA::toArray($r);
// Previous page case: once we get the relevant items closest to min_id, we need to restore the expected display order
if (empty($item_id) && isset($min_id) && !isset($max_id)) {
$items = array_reverse($items);
}
return $items;
}
}