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New feature: Previous/Next News item navigation.

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Cameron
2021-02-24 15:26:01 -08:00
parent 180b6d8432
commit 58f129799b
2 changed files with 113 additions and 22 deletions
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115
e107_core/shortcodes/batch/news_shortcodes.php
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@@ -192,20 +192,7 @@ class news_shortcodes extends e_shortcode
*/
function sc_newsnavlink($parm=null) //TODO add more options.
{
$url = e107::getUrl()->create('news/list/items'); // default for now.
if(varset($parm['list']) == 'all') // A list of all items - usually headings and thumbnails
{
$url = e107::getUrl()->create('news/list/all');
}
elseif(varset($parm['list']) == 'category')
{
$url = e107::getUrl()->create('news/list/short', $this->news_item); //default for now.
}
elseif(varset($parm['items']) == 'category')
{
$url = e107::getUrl()->create('news/list/category', $this->news_item);
}
$url = $this->sc_news_nav_url($parm);
$caption = vartrue($parm['text'], LAN_BACK);
@@ -223,6 +210,27 @@ class news_shortcodes extends e_shortcode
public function sc_news_nav_url($parm)
{
$url = e107::getUrl()->create('news/list/items'); // default for now.
if(varset($parm['list']) == 'all') // A list of all items - usually headings and thumbnails
{
$url = e107::getUrl()->create('news/list/all');
}
elseif(varset($parm['list']) == 'category')
{
$url = e107::getUrl()->create('news/list/short', $this->news_item); //default for now.
}
elseif(varset($parm['items']) == 'category')
{
$url = e107::getUrl()->create('news/list/category', $this->news_item);
}
return $url;
}
function sc_newsheader($parm=null)
{
@@ -1186,5 +1194,82 @@ class news_shortcodes extends e_shortcode
}
/**
* @example {NEWS_NAV_NEXT}
* @return string|null
*/
function sc_news_nav_next()
{
return $this->parseNavTemplate('next');
}
/**
* {NEWS_NAV_PREVIOUS}
* @return string|null
*/
function sc_news_nav_previous()
{
return $this->parseNavTemplate('previous');
}
/**
* {NEWS_NAV_PREVIOUS}
* @return string|null
*/
function sc_news_nav_current()
{
$template = e107::getTemplate('news', 'news_view', 'nav');
return e107::getParser()->parseTemplate($template['current'], true, $this);
}
/**
* Retrieves the data from the previous/next news record and renders the corresponding template.
* @param string $type next|previous
* @return string|null
*/
private function parseNavTemplate($type)
{
if(!$data = $this->getNavQuery($type))
{
return null;
}
$template = e107::getTemplate('news', 'news_view', 'nav');
$orig = $this->getScVar('news_item');
$this->setScVar('news_item', $data);
$text = e107::getParser()->parseTemplate($template[$type], true, $this);
$this->setScVar('news_item', $orig);
return $text;
}
/**
* Retrieve table data from the previous or next news item.
* @param string $type next/previous
* @return array|string
*/
private function getNavQuery($type)
{
$nobody_regexp = "'(^|,)(".str_replace(",", "|", e_UC_NOBODY).")(,|$)'";
$var = $this->getScVar('news_item');
$dir = ($type === 'next') ? '>=' : '<=';
$sort = ($type === 'next') ? 'ASC' : 'DESC';
$query = "
SELECT SQL_CALC_FOUND_ROWS n.*, u.user_id, u.user_name, u.user_customtitle, u.user_image, nc.category_id, nc.category_name, nc.category_sef, nc.category_icon,
nc.category_meta_keywords, nc.category_meta_description, nc.category_template
FROM #news AS n
LEFT JOIN #user AS u ON n.news_author = u.user_id
LEFT JOIN #news_category AS nc ON n.news_category = nc.category_id
WHERE n.news_class REGEXP '".e_CLASS_REGEXP."' AND NOT (n.news_class REGEXP ".$nobody_regexp.")
AND n.news_start < ".time()." AND (n.news_end=0 || n.news_end>".time().")
AND (FIND_IN_SET('0', n.news_render_type) OR FIND_IN_SET(1, n.news_render_type))
AND n.news_datestamp ".$dir . (int) $var['news_datestamp']. " AND n.news_id != ".(int) $var['news_id']." ORDER by n.news_datestamp ".$sort." LIMIT 1";
return e107::getDb()->retrieve($query);
}
}
?>