what is different between activerecord::relation's count, length and size methods?
what is the difference between the Observers and Callbacks in Ruby on Rails?
How do rails implement ajax?
Who designed active record in rails?
Explain about restful architecture?
Difference between gem and plugin?
Do you know the role of garbage collection in ruby on rails?
how many types of callbacks available in ror?
The string can be represented in single as well as double quotes. What is the difference between the two?
What is the main difference between procs and blocks?
how you can list all routes for an application?
How are blocks created?
What is the process for creating a controller for the subject? What is its role?