ruby-on-rails 4,433

  1. How can I rename a database column in a Ruby on Rails migration?
  2. Why do people use Heroku when AWS is present? What distinguishes Heroku from AWS?
  3. How do I get the current absolute URL in Ruby on Rails?
  4. A concise explanation of nil v. empty v. blank in Ruby on Rails
  5. Understanding the Rails Authenticity Token
  6. Can't find the 'libpq-fe.h header when trying to install pg gem
  7. How to rollback a specific migration?
  8. How to use concerns in Rails 4
  9. `require': no such file to load — mkmf (LoadError)
  10. Ruby on Rails Server options
  11. Difference between rake db:migrate db:reset and db:schema:load
  12. Purge or recreate a Ruby on Rails database
  13. How can I “pretty” format my JSON output in Ruby on Rails?
  14. How to drop columns using Rails migration
  15. How to check if a specific key is present in a hash or not?
  16. Undo scaffolding in Rails
  17. Begin, Rescue and Ensure in Ruby?
  18. Getting error: Peer authentication failed for user “postgres”, when trying to get pgsql working with rails


  19. Error installing mysql2: Failed to build gem native extension
  20. How to redirect to a 404 in Rails?
  21. How to remove a key from Hash and get the remaining hash in Ruby/Rails?
  22. Rails DB Migration - How To Drop a Table?
  23. When to use RSpec let()?
  24. How do I call controller/view methods from the console in Rails?
  25. Using Rails 3.1, where do you put your “page specific” JavaScript code?
  26. Rails I18n validation deprecation warning
  27. How can I set default values in ActiveRecord?
  28. Difference between string and text in rails?
  29. No route matches “/users/sign_out” devise rails 3
  30. How to disable logging of asset pipeline (sprockets) messages in Rails 3.1?
  31. In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?
  32. How do you write a migration to rename an ActiveRecord model and its table in Rails?
  33. Bundler: What does :require => false in a Gemfile mean?
  34. What is the easiest way to duplicate an activerecord record?
  35. Rails 4: List of available datatypes
  36. How do I get the name of a Ruby class?
  37. Rails update_attributes without save?
  38. How to define custom configuration variables in rails
  39. How do I make a column unique and index it in a Ruby on Rails migration?
  40. What does “WARN Could not determine content-length of response body.” mean and how to I get rid of it?
  41. Can Rails Routing Helpers (i.e. mymodel_path(model)) be Used in Models?
  42. Rails where condition using NOT NULL
  43. Rails :include vs. :joins
  44. Using fonts with Rails asset pipeline
  45. What does bundle exec rake mean?
  46. Rails 4: before_filter vs. before_action
  47. What is the best method of handling currency/money?
  48. How to find where a method is defined at runtime?
  49. How can I specify a local gem in my Gemfile?
  50. raw vs. html_safe vs. h to unescape html