Advice on doing this better, faster and neater (form and image upload)

[eluser]bugboy[/eluser]
Wicked cheers some of it makes sense some doesn't

What would you class as db logic on there as i have my model (admin) doing the inserting and such?

So make news validation a private function i didn't know you could do this with validation what would this look like, how would you put the data in and out of it?

So with the upload function i only call it when i need it if its needed pass it the post file data and let it return a array if its completed or a true/ false / null thing?

This is great advice. Sorry if i sound thick though