Use RFC1123 format for Memento-Datetime response header

berkmancenter · Mar 4, 2015 · 2a3cc06 · 2a3cc06
1 parent 660660d
commit 2a3cc06
Showing 1 changed file with 11 additions and 1 deletion.
diff --git a/amber/amber.php b/amber/amber.php
@@ -467,6 +467,15 @@ public static function custom_query_vars($vars) {
  return $vars;
  }
 
+ /**
+ * Convert a string representation of a date into RFC1123 format
+ */
+ public static function format_memento_date($date_string) {
+ $storage = Amber::get_storage();
+ $dt = DateTime::createFromFormat($storage->ISO8601_FORMAT, $date_string);
+ $result = $dt->format(DateTime::RFC1123);
+ return $result;
+ }
 
  /**
  * Request handling function to display cached content and assets
@@ -551,7 +560,8 @@ public static function filter_cached_content_headers($headers)
  $data = Amber::retrieve_cache_item($cache_id, false);
  }
  if (isset($data['metadata']['cache']['amber']['date'])) {
- $headers['Memento-Datetime'] = $data['metadata']['cache']['amber']['date'];
+ $memento_date = Amber::format_memento_date($data['metadata']['cache']['amber']['date']);
+ $headers['Memento-Datetime'] = $memento_date;
  }
  }
  return $headers;