Help, do i need to validates_length_of these?

Hi, i'm using postgres and rails, and i've some fields, like first name,
last name, etc, i've set it with the migration to a maximum of 50 chars,
and i've limited in the view the possibility to insert more than 50
chars... have i also to add a validates_length_of in the model for all
of these fields? Which problems may i have to don't put it?

Any chance you'll ever manage that data outside of your views? Perhaps in a custom script, or via ./script/console? It certainly doesn't hurt to do it there as well...