When redirect string is null, use current route
When redirect string is null, use current route

In a lot of PRG patterns the POST request happens to the same url
as the GET request. It keeps the flexibility to set the route name
but it also defaults to the current matched route name.

turrsis/zend-mvc,ezimuel/zend-mvc,turrsis/zend-mvc,MadCat34/zend-mvc,svycka/zend-mvc,ezimuel/zend-mvc,MadCat34/zend-mvc,svycka/zend-mvc