what is Polymorphic Association in Ruby on Rails?
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How is the model view controller framework used in ruby on rails?
What are gemsets in rails?
what is different between activerecord::relation's count, length and size methods?
what is the difference between Active support’s “HashWithIndifferent” and Ruby’s “Hash” ?
when self.up and self.down method is used?
How are blocks created?
what is active record?
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What is the architecture of Model views and controllers
what is Rails Active Record in Ruby on Rails?
what is the difference between new, save and create?
What are rails validation used for?