If I use permalink_fu on a text field I get this for the resulting permalink:
http://localhost:3000/243webb4ee4ff2227230b4232438591810c35d3f
instead of
http://localhost:3000/where-is-my-lost-cat
I assume this is because the text field becomes a blob in the database and permalink_fu only knows how to operate on string fields.
How could I convert this to a readable string version?
(without changing the database type from text to string)