ruby - Rails Conditional Validation in Model from Controller Session Data -

i trying conditionally validate full_name , zip based on whether visitor part of test (visitors part of test have session data). able pass true/false leads controller customer model via customer.visitor_test(), can't access @test in_test? in model. missing?

customer.rb

/* stripped down code */  class customer < activerecord::base   attr_accessor    :test    validates :full_name, presence: true, if: :not_in_test?   validates :zip, presence: true, if: :in_test?    def visitor_test(bool)     @test = bool   end    def in_test?     @test   end    def not_in_test?     !self.in_test?   end end 

leads_controller.rb

/* stripped down code */  class leadscontroller < applicationcontroller   def create     session[:zip] = zip     session[:email] = email     session[:full_name] = full_name     session[:email_opt_in] = email_opt_in     session[:phone] = phone      listing = listing.where(id: listing_id).first      customer = create_or_update_customer_from_session(listing)      customer.visitor_test(/* true || false */)      if customer.errors.blank?       /* */     else       /* else */     end   end end 

/* stripped down code */  class customer < activerecord::base   attr_accessor    :test    validates :full_name, presence: true, if: :not_in_test?   validates :zip, presence: true, if: :in_test?    def in_test?     test   end    def not_in_test?     !in_test?   end end 

attr_accessor provides setter , getter.

/* stripped down code */  class leadscontroller < applicationcontroller   def create     session[:zip] = zip     session[:email] = email     session[:full_name] = full_name     session[:email_opt_in] = email_opt_in     session[:phone] = phone      listing = listing.where(id: listing_id).first      customer = create_or_update_customer_from_session(listing)         customer.test = true           customer.save      if customer.errors.blank?       /* */     else       /* else */     end   end end