Explain me what is the difference between concern and application_controller.rb in ruby on rails?

814

what is Rails Active Record in Ruby on Rails?

933

How is calling super() different from the super call?

896

What is rails migrations?

888

what is the naming convention in Rails?

971

what is the difference between the Observers and Callbacks in Ruby on Rails?

996

If you want to set up a one-to-one relationship between two models, you'll need to add belongs_to to one, and has_one to the other. How do you know which is which?

865

What do you mean by render and redirect_to?

883

How do I find only duplicate entries in a database table?

967

How would you create a controller for the subject?

821

what is rails caching?

919

What is the symbol garbage collector?

953

Tell us what is the difference between redirect and render in ruby on rails?

796

What is the purpose of load, auto_load, and require_relative in ruby ?

801

What is the difference between false and nil in ruby?

869