when self.up and self.down method is used?
No Answer is Posted For this Question
Be the First to Post Answer
what is the difference between the Observers and Callbacks in Ruby on Rails?
what is Cross-Site Request Forgery (CSRF) and how Rails is protected against it?
Tell me what is rails migration?
What are models in rails?
Tell me what is polymorphic association in ruby on rails?
when self.up and self.down method is used?
what is the command to create a migration?
What is rails router?
What is the main difference between procs and blocks?
How are observers and callbacks different from each other?
What is the main function of helpers used in ruby on rails?
What is the difference between save and save?