function wp_rewrite_rules($wp_rewrite) {
$rules = wp_generate_date_archives(‘CUSTOM_POST_TYPE_SLUG’, $wp_rewrite);
$wp_rewrite->rules = $rules + $wp_rewrite->rules;
return $wp_rewrite;
}
add_action(‘generate_rewrite_rules’, ‘wp_rewrite_rules’);
function wp_generate_date_archives($postslug, $wp_rewrite) {
$rules = array();
$post_type = get_post_type_object($postslug);
$slug_archive = $post_type->has_archive;
if ($slug_archive === false) return $rules;
if ($slug_archive === true) {
$slug_archive = $post_type->name;
}
$dates = array(
array(
‘rule’ => “([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})”,
‘vars’ => array(‘year’, ‘monthnum’, ‘day’)),
array(
‘rule’ => “([0-9]{4})/([0-9]{1,2})”,
‘vars’ => array(‘year’, ‘monthnum’)),
array(
‘rule’ => “([0-9]{4})”,
‘vars’ => array(‘year’)),
array(
‘rule’ => “([^/]+)”,
‘vars’ => array(‘name’))
);
foreach ($dates as $data) {
$query = ‘index.php?post_type=’.$postslug;
$rule = $slug_archive.’/’.$data[‘rule’];
$i = 1;
foreach ($data[‘vars’] as $var) {
$query.= ‘&’.$var.’=’.$wp_rewrite->preg_index($i);
$i++;
}
$rules[$rule.”/?$”] = $query;
$rules[$rule.”/feed/(feed|rdf|rss|rss2|atom)/?$”] = $query.”&feed=”.$wp_rewrite->preg_index($i);
$rules[$rule.”/(feed|rdf|rss|rss2|atom)/?$”] = $query.”&feed=”.$wp_rewrite->preg_index($i);
$rules[$rule.”/page/([0-9]{1,})/?$”] = $query.”&paged=”.$wp_rewrite->preg_index($i);
}
return $rules;
}