Converting English dates to Maori with Ruby

In the project I am working on at the moment (my first Rails project) I needed a quick way to convert a date set in English (with the month and day of the week in full) to Māori.

This was a pretty simple function to write, so in plenty of time for Māori Language Week (27 July - 2 August 2009) here is the Ruby function.

It turns this:

Monday 20 April 2009

into this:

Rāhina 20 Paengawhā-whā 2009