Why rescue nil is bad - fixed

rescue_nil_bad_fixed.rb

class Category < ActiveRecord::Base

  def ask_question(question)
    begin
      ## Code to check some other system for the answer, Redis or Memcached maybe.
      raise "System is unavailable, you should turn it on"
    rescue Exception => e
      ## Do something with exception
      puts "System is unavailable" 
      return nil
    end
  end

end
  
params = {category_id: 1, question: "Why did the quick brown fox jump over the lazy dog?"}

if category && answer = category.ask_question(params[:question])
  ## Do something with the answer
else
  ## Do something else
end