Extensions: Add natural sorting for PostgreSQL (Upgrade > App Defaults to create required function).

app/extensions/app_defaults.php

@@ -17,7 +17,7 @@
 
 	The Initial Developer of the Original Code is
 	Mark J Crane <markjcrane@fusionpbx.com>
-	Portions created by the Initial Developer are Copyright (C) 2008-2017
+	Portions created by the Initial Developer are Copyright (C) 2008-2019
 	the Initial Developer. All Rights Reserved.
 
 	Contributor(s):
@@ -78,6 +78,18 @@
 
 			$p->delete('default_setting_edit', 'temp');
 
+		//create natural sort function (source: http://www.rhodiumtoad.org.uk/junk/naturalsort.sql)
+			if ($db_type == 'pgsql') {
+				$sql = "create or replace function natural_sort(text)\n";
+				$sql .= "	returns bytea language sql immutable strict as \$f\$\n";
+				$sql .= "	select string_agg(convert_to(coalesce(r[2], length(length(r[1])::text) || length(r[1])::text || r[1]), 'SQL_ASCII'),'\\x00')\n";
+				$sql .= "	from regexp_matches(\$1, '0*([0-9]+)|([^0-9]+)', 'g') r;\n";
+				$sql .= "\$f\$;";
+				$database = new database;
+				$database->execute($sql);
+				unset($sql);
+			}
+
 	}
 
-?>
+?>