What is the difference between concern and application_controller.rb in ruby on rails?
What is rails migrations?
How can you protect filter methods in rails?
What is the directory structure of rails?
What are the different filters used in ruby on rails?
Choosing between belongs_to and has_one?
What are the various changes between the rails version 2 and 3?
What are the different components of rails ?
what is a rails migration? Write up a short example of a simple rails migration with a table called customers, a string column called name, and a text column called description?
How are string and symbol different?
How would you create a controller for the subject?
let me know what is ruby software and where and when it is usefull. Is it usefull to data base developer, if yes...where? thank you
What is the use of $ in ruby?