Calling a function from inside a view

[eluser]Omaplie[/eluser]
Thank you for your fast reply.

Great I begin to understand.
Just some other questions :

Where did you put your function dd_students ? In the helper file ?
I would like to make some action in my function in the controller because as I see,
your function just call the model. I would like to create an array
with some value that I get in the view, is that possible ?

Many thanks for you help.