SlimPHP v2 did not offer an elegant way (or any way actually) to alias application urls. I created a function that will allow a user to alias their urls in such a way that they can use optional and conditional parameters as well.
This will also help maintain an application when routes change. Instead of having to navigate through .htaccess rewrite rules, you could potentially enforce all of your route re-writes through this method.
There are several steps that you will need to take to successfully set this up. Once it's set up, you will only need to modify 1 file (or section) going forward.