not very efficient (add 4 to 5 sql queries)
// since 0.5: remove the WP widget and replace it by our own -> our language filter will not work if get_calendar is called directly by a theme
if(!class_exists('WP_Widget_Calendar')){
require_once( ABSPATH . '/wp-includes/default-widgets.php' );
}
class Polylang_Widget_Calendar extends WP_Widget_Calendar {
function widget( $args, $instance ) {
global $polylang; #added#
extract($args);
$title = apply_filters('widget_title', empty($instance['title']) ? ' ' : $instance['title'], $instance, $this->id_base);
echo $before_widget;
if ( $title )
echo $before_title . $title . $after_title;
echo '';
isset($polylang) && $polylang->get_languages_list() ? $this->get_calendar() : get_calendar(); #modified#
echo '
';
echo $after_widget;
}
// modified version of WP get_calendar function to filter the query
function get_calendar($initial = true, $echo = true) {
global $wpdb, $m, $monthnum, $year, $wp_locale, $posts;
global $polylang; #added#
$lang = $polylang->get_current_language()->term_taxonomy_id; #added#
$cache = array();
$key = md5( $lang . $m . $monthnum . $year ); #modified#
if ( $cache = wp_cache_get( 'get_calendar', 'calendar' ) ) {
if ( is_array($cache) && isset( $cache[ $key ] ) ) {
if ( $echo ) {
echo apply_filters( 'get_calendar', $cache[$key] );
return;
} else {
return apply_filters( 'get_calendar', $cache[$key] );
}
}
}
if ( !is_array($cache) )
$cache = array();
// Quick check. If we have no posts at all, abort!
if ( !$posts ) {
$gotsome = $wpdb->get_var("SELECT 1 as test FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 1");
if ( !$gotsome ) {
$cache[ $key ] = '';
wp_cache_set( 'get_calendar', $cache, 'calendar' );
return;
}
}
if ( isset($_GET['w']) )
$w = ''.intval($_GET['w']);
// week_begins = 0 stands for Sunday
$week_begins = intval(get_option('start_of_week'));
// Let's figure out when we are
if ( !empty($monthnum) && !empty($year) ) {
$thismonth = ''.zeroise(intval($monthnum), 2);
$thisyear = ''.intval($year);
} elseif ( !empty($w) ) {
// We need to get the month from MySQL
$thisyear = ''.intval(substr($m, 0, 4));
$d = (($w - 1) * 7) + 6; //it seems MySQL's weeks disagree with PHP's
$thismonth = $wpdb->get_var("SELECT DATE_FORMAT((DATE_ADD('{$thisyear}0101', INTERVAL $d DAY) ), '%m')");
} elseif ( !empty($m) ) {
$thisyear = ''.intval(substr($m, 0, 4));
if ( strlen($m) < 6 )
$thismonth = '01';
else
$thismonth = ''.zeroise(intval(substr($m, 4, 2)), 2);
} else {
$thisyear = gmdate('Y', current_time('timestamp'));
$thismonth = gmdate('m', current_time('timestamp'));
}
$unixmonth = mktime(0, 0 , 0, $thismonth, 1, $thisyear);
$last_day = date('t', $unixmonth);
// Get the next and previous month and year with at least one post
$previous = $wpdb->get_row("SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
FROM $wpdb->posts
INNER JOIN $wpdb->term_relationships AS tr ON tr.object_id = ID
WHERE post_date < '$thisyear-$thismonth-01'
AND post_type = 'post' AND post_status = 'publish' AND tr.term_taxonomy_id = $lang
ORDER BY post_date DESC
LIMIT 1"); #modified#
$next = $wpdb->get_row("SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
FROM $wpdb->posts
INNER JOIN $wpdb->term_relationships AS tr ON tr.object_id = ID
WHERE post_date > '$thisyear-$thismonth-{$last_day} 23:59:59'
AND post_type = 'post' AND post_status = 'publish' AND tr.term_taxonomy_id = $lang
ORDER BY post_date ASC
LIMIT 1"); #modified#
/* translators: Calendar caption: 1: month name, 2: 4-digit year */
$calendar_caption = _x('%1$s %2$s', 'calendar caption');
$calendar_output = '
' . sprintf($calendar_caption, $wp_locale->get_month($thismonth), date('Y', $unixmonth)) . '
';
$myweek = array();
for ( $wdcount=0; $wdcount<=6; $wdcount++ ) {
$myweek[] = $wp_locale->get_weekday(($wdcount+$week_begins)%7);
}
foreach ( $myweek as $wd ) {
$day_name = (true == $initial) ? $wp_locale->get_weekday_initial($wd) : $wp_locale->get_weekday_abbrev($wd);
$wd = esc_attr($wd);
$calendar_output .= "\n\t\t| $day_name | ";
}
$calendar_output .= '
';
if ( $previous ) {
$calendar_output .= "\n\t\t".'| « ' . $wp_locale->get_month_abbrev($wp_locale->get_month($previous->month)) . ' | ';
} else {
$calendar_output .= "\n\t\t".' | ';
}
$calendar_output .= "\n\t\t".' | ';
if ( $next ) {
$calendar_output .= "\n\t\t".'' . $wp_locale->get_month_abbrev($wp_locale->get_month($next->month)) . ' » | ';
} else {
$calendar_output .= "\n\t\t".' | ';
}
$calendar_output .= '
';
// Get days with posts
$dayswithposts = $wpdb->get_results("SELECT DISTINCT DAYOFMONTH(post_date)
FROM $wpdb->posts
INNER JOIN $wpdb->term_relationships AS tr ON tr.object_id = ID
WHERE post_date >= '{$thisyear}-{$thismonth}-01 00:00:00'
AND post_type = 'post' AND post_status = 'publish' AND tr.term_taxonomy_id = $lang
AND post_date <= '{$thisyear}-{$thismonth}-{$last_day} 23:59:59'", ARRAY_N); #modified#
if ( $dayswithposts ) {
foreach ( (array) $dayswithposts as $daywith ) {
$daywithpost[] = $daywith[0];
}
} else {
$daywithpost = array();
}
if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false || stripos($_SERVER['HTTP_USER_AGENT'], 'camino') !== false || stripos($_SERVER['HTTP_USER_AGENT'], 'safari') !== false)
$ak_title_separator = "\n";
else
$ak_title_separator = ', ';
$ak_titles_for_day = array();
$ak_post_titles = $wpdb->get_results("SELECT ID, post_title, DAYOFMONTH(post_date) as dom "
."FROM $wpdb->posts "
."INNER JOIN $wpdb->term_relationships AS tr ON tr.object_id = ID "
."WHERE post_date >= '{$thisyear}-{$thismonth}-01 00:00:00' "
."AND post_date <= '{$thisyear}-{$thismonth}-{$last_day} 23:59:59' "
."AND post_type = 'post' AND post_status = 'publish' AND tr.term_taxonomy_id = $lang"
); #modified#
if ( $ak_post_titles ) {
foreach ( (array) $ak_post_titles as $ak_post_title ) {
$post_title = esc_attr( apply_filters( 'the_title', $ak_post_title->post_title, $ak_post_title->ID ) );
if ( empty($ak_titles_for_day['day_'.$ak_post_title->dom]) )
$ak_titles_for_day['day_'.$ak_post_title->dom] = '';
if ( empty($ak_titles_for_day["$ak_post_title->dom"]) ) // first one
$ak_titles_for_day["$ak_post_title->dom"] = $post_title;
else
$ak_titles_for_day["$ak_post_title->dom"] .= $ak_title_separator . $post_title;
}
}
// See how much we should pad in the beginning
$pad = calendar_week_mod(date('w', $unixmonth)-$week_begins);
if ( 0 != $pad )
$calendar_output .= "\n\t\t".'| | ';
$daysinmonth = intval(date('t', $unixmonth));
for ( $day = 1; $day <= $daysinmonth; ++$day ) {
if ( isset($newrow) && $newrow )
$calendar_output .= "\n\t
\n\t\n\t\t";
$newrow = false;
if ( $day == gmdate('j', current_time('timestamp')) && $thismonth == gmdate('m', current_time('timestamp')) && $thisyear == gmdate('Y', current_time('timestamp')) )
$calendar_output .= '| ';
else
$calendar_output .= ' | ';
if ( in_array($day, $daywithpost) ) // any posts today?
$calendar_output .= '$day";
else
$calendar_output .= $day;
$calendar_output .= ' | ';
if ( 6 == calendar_week_mod(date('w', mktime(0, 0 , 0, $thismonth, $day, $thisyear))-$week_begins) )
$newrow = true;
}
$pad = 7 - calendar_week_mod(date('w', mktime(0, 0 , 0, $thismonth, $day, $thisyear))-$week_begins);
if ( $pad != 0 && $pad != 7 )
$calendar_output .= "\n\t\t".' | ';
$calendar_output .= "\n\t
\n\t\n\t
";
$cache[ $key ] = $calendar_output;
wp_cache_set( 'get_calendar', $cache, 'calendar' );
if ( $echo )
echo apply_filters( 'get_calendar', $calendar_output );
else
return apply_filters( 'get_calendar', $calendar_output );
}
}
?>