Do you know when self.up and self.down method is used?
Submitted by: MuhammadWhen migrating to a new version, self.up method is used while self.down method is used to roll back my changes if needed.
Submitted by: Muhammad
Submitted by: Muhammad
Read Online Ruby Developer Job Interview Questions And Answers
Top Ruby Developer Questions
| ☺ | Tell us what is class libraries in Ruby? |
| ☺ | Tell me can you call a private method outside a Ruby class using its object? |
| ☺ | Explain me what is the function of ORM in Ruby on Rails? |
| ☺ | Tell me the role of modules and mixins in Ruby? |
| ☺ | What is the difference extend and include? |
Top Web Developer Categories
| ☺ | Bootstrap Interview Questions. |
| ☺ | Front End Web Developer Interview Questions. |
| ☺ | Typography Interview Questions. |
| ☺ | Laravel PHP Developer Interview Questions. |
| ☺ | Junior Developer PHP Interview Questions. |
