Cannot save object instance to database (Rails 3)

Hi all!
I’m pretty new to Rails and got stuck a little.

I’m trying to create new object instance via “new” form but nothing happens. I just get the same form (refreshed and empty) and all parameter that I had typed serialized in address bar after ?

I tried to find help on stackoverflow, but we all together couldn’t figure out where is the error.

So here is my code: http://stackoverflow.com/questions/18329452/cannot-save-object-to-database-rails-3

Please take a glance and help me to understand where I am wrong.

All help is highly appreciated.

First look in development.log to see what is happening.

Also have a look at the Rails Guide on Debugging to see techniques
that can be used to debug your code.

Colin