Question

My problem is: the code below works fine but there is one special case. If item’s product_id is 1 then item can have up to 10 keywords. Any help will be appreciated.Thanks

class Item < ActiveRecord::Base

validates_length_of :keywords, :maximum => 5,  :tokenizer => lambda {|str| str.scan(/\w+/) }, :on => :update 

end

Answer 1

validates_length_of :keywords, :maximum => 5,  :tokenizer => lambda {|str| str.scan(/\w+/) }, :on => :update, :unless => lambda { |item| item.product_id == 1 }