No fields on first step causes ActiveRecord::RecordNotUnique error

[paulschreiber]

If you don't put any fields on the first step in the wizard, when you click next, the app will crash with a ActiveRecord::RecordNotUnique error.

This is because it's trying to save with an email address of '', which is not allowed.

If there are no fields, we shouldn't call create.

[cap10morgan]

Not a hat-trick bug. Hat-trick doesn't "call create" or any other controller methods. Rails does that.

I'm fixing this in the register_controller b/c it is caused by the unique requirements of our app. We can revisit adding some kind of support for "field-less first steps" in a hat-trick later on if this becomes a big problem.

[paulschreiber]

This seems like a good thing for hat-trick to be able to support.