validates :key, :presence => true, :uniqueness => true
validates :name, :url, :secret, :presence => true
validates :url, :format => %r{\Ahttp(s?)://(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(/|/([\w#!:.?+=&%@!\-/]))?}i
- validates :support_url, :callback_url, :allow_blank => true, :format => %r{\Ahttp(s?)://(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(/|/([\w#!:.?+=&%@!\-/]))?}i
+ validates :support_url, :allow_blank => true, :format => %r{\Ahttp(s?)://(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(/|/([\w#!:.?+=&%@!\-/]))?}i
+ validates :callback_url, :allow_blank => true, :format => %r{\A[a-z][a-z0-9.+-]*://(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(/|/([\w#!:.?+=&%@!\-/]))?}i
before_validation :generate_keys, :on => :create