How to use is_unique?

Hey, calm down. It's not with that kind of attitude that you'll get help here.

Since the Controller and Model both use the Validation library, I assumed they both work the same way. I looked at the code and it seems only the Model take care of the placeholders in the rules, with its fillPlaceholders() function.

I'm from Russia and sorry for my bad English! I used Google Translate service to describe my problem and probably my text was strict.

I'm very sad at this version of Codeigniter. This is not release! It's maximum is BETA! I meet everyday so many bugs on each step in development process! In Views (I'm wrote in github)- bugs, In Models - bugs, In Libraries - bugs (as this) and so on.