Removed FB notifications.
Added my own flash message to FB authentication.
Playing with PayPal Sandbox for the first time. Good LUCK.
Trying again.
Trying third time's a charm.
Deleted initialize method from PaymentsController.
Trying again.
And again...
payKey instead of pay_key?
Trying another PayPal thing.
Trying another PayPal thing II.
Missing file?
Trying to redirect to PayPal.
Changed new to pay.
Trying to implement PayPal using ActiveMerchant.