He modificado la función get_calendar de este WordPress 2.9.0 ubicada en /raiz_wp/wp_includes/general_template.php para reemplazar el titulo del més por una lista de mes-año (numero de apuntes).
Creo que con esto se mejora bastante la navegación por los apuntes antiguos y aunque me suena de algún plugins que hace algo parecido vereis que se pueden ahorrar algunos recursos simplemente añadiendo unas líneas a la función.
La función get_calendar ha quedado de la siguiente manera (la parte corregida/modificada está advertida, el resto de la función es la original … creo… :) )
function get_calendar($initial = true) {
global $wpdb, $m, $monthnum, $year, $wp_locale, $posts;
$cache = array();
$key = md5( $m . $monthnum . $year );
if ( $cache = wp_cache_get( 'get_calendar', 'calendar' ) ) {
if ( is_array($cache) && isset( $cache[ $key ] ) ) {
echo $cache[ $key ];
return;}
}
if ( !is_array($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', $cache, 'calendar' );
return;
}
}
ob_start();
if ( isset($_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);
// Get the next and previous month and year with at least one post
$previous = $wpdb->get_row("SELECT DISTINCT MONTH(post_date) AS month, YEAR(post_date) AS year
FROM $wpdb->posts
WHERE post_date < '$thisyear-$thismonth-01'
AND post_type = 'post' AND post_status = 'publish'
ORDER BY post_date DESC
LIMIT 1");
$next = $wpdb->get_row("SELECT DISTINCT MONTH(post_date) AS month, YEAR(post_date) AS year
FROM $wpdb->posts
WHERE post_date > '$thisyear-$thismonth-01'
AND MONTH( post_date ) != MONTH( '$thisyear-$thismonth-01' )
AND post_type = 'post' AND post_status = 'publish'
ORDER BY post_date ASC
LIMIT 1");
/* translators: Calendar caption: 1: month name, 2: 4-digit year */
$calendar_caption = _x('%1$s %2$s', 'calendar caption');
echo '<table id="wp-calendar" summary="' . esc_attr__('Calendar') . '">';
echo '<caption>';
//INICIO seccion cambiada
$unixPrimero=mktime(0,0,0,4,5,2003);
$anoAnterior="";
$unixUltimo=time();
echo '<select onchange="document.location.href=this.value;">';
while ( $unixPrimero < $unixUltimo ) {
$apuntesMensuales = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->posts WHERE post_date LIKE '%".date('Y-m-', $unixPrimero)."%' AND post_status='publish' LIMIT 1");
$anoEnCurso=date('Y', $unixPrimero);
if($apuntesMensuales > 0) {
if( $anoAnterior != $anoEnCurso ) {
if($anoAnterior != "") echo "</optgroup>";
echo "<optgroup label=\"$anoEnCurso\">";
$anoAnterior=$anoEnCurso;
}
echo "<option value=\"/".date('Y/m', $unixPrimero)."\"";
if( date('Y/m', $unixPrimero) == "$thisyear/$thismonth" ) echo " selected=\"selected\" ";
echo ">".$wp_locale->get_month(date("m",$unixPrimero))." - ".date('Y', $unixPrimero)." (".$apuntesMensuales.")</option>\n";
}
else {
if( $anoAnterior != $anoEnCurso ) {
if($anoAnterior != "") echo "</optgroup>";
echo "<optgroup label=\"$anoEnCurso\">";
$anoAnterior=$anoEnCurso;
}
echo "<option disabled>".$wp_locale->get_month(date("m",$unixPrimero))." - ".date('Y', $unixPrimero)." (0)</option>";
}
$unixPrimero=$unixPrimero+2678400;
}
echo "<option value=\"/\"";
if( date('Y/m', $unixUltimo) == "$thisyear/$thismonth" ) echo " selected=\"selected\" ";
echo ">".$wp_locale->get_month(date("m",$unixUltimo))." - ".date('Y', $unixUltimo)." (actualmente)</option>\n";
echo '</select>';
// $mesSegundo=$primerMes + 2592000;
// echo date('F Y', $mesSegundo);
// $mesActual="";
// echo sprintf($calendar_caption, $wp_locale->get_month($thismonth), date('Y', $unixmonth));
//FIN seccion cambiada
echo '</caption>
<thead>
<tr>';
$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);
echo "\n\t\t<th abbr=\"$wd\" scope=\"col\" title=\"$wd\">$day_name</th>";
}
echo '
</tr>
</thead>
<tfoot>
<tr>';
if ( $previous ) {
echo "\n\t\t".'<td abbr="' . $wp_locale->get_month($previous->month) . '" colspan="3" id="prev"><a href="' .
get_month_link($previous->year, $previous->month) . '" title="' . sprintf(__('View posts for %1$s %2$s'), $wp_locale->get_month($previous->month),
date('Y', mktime(0, 0 , 0, $previous->month, 1, $previous->year))) . '">« ' . $wp_locale->get_month_abbrev($wp_locale->get_month($previous->month)) . '</a></td>';
} else {
echo "\n\t\t".'<td colspan="3" id="prev" class="pad"> </td>';
}
echo "\n\t\t".'<td class="pad"> </td>';
if ( $next ) {
echo "\n\t\t".'<td abbr="' . $wp_locale->get_month($next->month) . '" colspan="3" id="next"><a href="' .
get_month_link($next->year, $next->month) . '" title="' . esc_attr( sprintf(__('View posts for %1$s %2$s'), $wp_locale->get_month($next->month) ,
date('Y', mktime(0, 0 , 0, $next->month, 1, $next->year))) ) . '">' . $wp_locale->get_month_abbrev($wp_locale->get_month($next->month)) . ' »</a></td>';
} else {
echo "\n\t\t".'<td colspan="3" id="next" class="pad"> </td>';
}
echo '
</tr>
</tfoot>
<tbody>
<tr>';
// Get days with posts
$dayswithposts = $wpdb->get_results("SELECT DISTINCT DAYOFMONTH(post_date)
FROM $wpdb->posts WHERE MONTH(post_date) = '$thismonth'
AND YEAR(post_date) = '$thisyear'
AND post_type = 'post' AND post_status = 'publish'
AND post_date < '" . current_time('mysql') . '\'', ARRAY_N);
if ( $dayswithposts ) {
foreach ( (array) $dayswithposts as $daywith ) {
$daywithpost[] = $daywith[0];
}
} else {
$daywithpost = array();
}
if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false || strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'camino') !== false || strpos(strtolower($_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 post_title, DAYOFMONTH(post_date) as dom "
."FROM $wpdb->posts "
."WHERE YEAR(post_date) = '$thisyear' "
."AND MONTH(post_date) = '$thismonth' "
."AND post_date < '".current_time('mysql')."' "
."AND post_type = 'post' AND post_status = 'publish'"
);
if ( $ak_post_titles ) {
foreach ( (array) $ak_post_titles as $ak_post_title ) {
$post_title = esc_attr( apply_filters( 'the_title', $ak_post_title->post_title ) );
if ( empty($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 != $pad )
echo "\n\t\t".'<td colspan="'. esc_attr($pad) .'" class="pad"> </td>';
$daysinmonth = intval(date('t', $unixmonth));
for ( $day = 1; $day <= $daysinmonth; ++$day ) {
if ( isset($newrow) && $newrow )
echo "\n\t</tr>\n\t<tr>\n\t\t";
$newrow = false;
if ( $day == gmdate('j', (time() + (get_option('gmt_offset') * 3600))) && $thismonth == gmdate('m', time()+(get_option('gmt_offset') * 3600)) && $thisyear == gmdate('Y', time()+(get_option('gmt_offset') * 3600)) )
echo '<td id="today">';
else
echo '<td>';
if ( in_array($day, $daywithpost) ) // any posts today?
echo '<a href="' . get_day_link($thisyear, $thismonth, $day) . "\" title=\"" . esc_attr($ak_titles_for_day[$day]) . "\">$day</a>";
else
echo $day;
echo '</td>';
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 && $pad != 7 )
echo "\n\t\t".'<td class="pad" colspan="'. esc_attr($pad) .'"> </td>';
echo "\n\t</tr>\n\t</tbody>\n\t</table>";
$output = ob_get_contents();
ob_end_clean();
echo $output;
$cache[ $key ] = $output;
wp_cache_set( 'get_calendar', $cache, 'calendar' );
}

Podeis ver como queda echando un vistazo al calendario que aparece en estas páginas, en la columna de la derecha.