[Rails] Re: before_validate refactor question

 before_validation :capitalize_first_words 

    def capitalize_first_words 
      [:question, :correct_ans_1, :correct_ans_2, :correct_ans_3].each do |key| 

          self.key = key.to_s.gsub(/^(\W*?[a-z])/) { |m| m.upcase } if !key.to_s.blank? 

      end 
    end 

Note the difference betweet self.key and key.

self.key calls method key on self.

key - is block local variable, which is instance of Symbol ( :question, :correct_ans_1 ...).

Symbol has not methods '.gsub' and '.blank?', so it must be converted to String to call '.gsub' and '.blank?'

среда, 4 сентября 2013 г., 1:03:10 UTC+3 пользователь Ruby-Forum.com User написал:

Now giving error:
undefined method `key' for #<Question:0x007fdff26b7798>

In Question model:
 before_validation :capitalize_first_words

    def capitalize_first_words
      [:question, :correct_ans_1, :correct_ans_2, :correct_ans_3].each
do |key|

          self.key = self.key.gsub(/^(\W*?[a-z])/) { |m| m.upcase } if
!self.key.blank?
      end
    end

Am I missing something really quite simple?

Thanks

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