How do you discover model attributes in Rails?

by

For Schema related stuff

Model.column_names         
Model.columns_hash         
Model.columns

For instance variables/attributes in an AR object

object.attribute_names                    
object.attribute_present?          
object.attributes

For instance methods without inheritance from super class

Model.instance_methods(false)

More Related Contents:

  1. How to do a LIKE query in Arel and Rails?
  2. ActiveRecord Query Union
  3. How do I replace accented Latin characters in Ruby?
  4. How to chain scope queries with OR instead of AND?
  5. Rails 5: ActiveRecord OR query
  6. Ruby on Rails. How do I use the Active Record .build method in a :belongs to relationship?
  7. Alias for column names in Rails
  8. Clean way to find ActiveRecord objects by id in the order specified
  9. Altering the primary key in Rails to be a string
  10. What does inverse_of do? What SQL does it generate?
  11. Rails 3 devise, current_user is not accessible in a Model ?
  12. LEFT OUTER joins in Rails 3
  13. Overriding id on create in ActiveRecord
  14. How do i work with two different databases in rails with active records?
  15. How to execute a raw update sql with dynamic binding in rails
  16. Rails 3 – select with Include?
  17. Bulk Insert records into Active Record table
  18. rails dates with json
  19. What’s the difference between belongs_to and has_one?
  20. Regular expressions with validations in RoR 4
  21. Do rails rake tasks provide access to ActiveRecord models?
  22. how to add records to has_many :through association in rails
  23. How to use long id in Rails applications?
  24. How to implement bulk insert in Rails 3
  25. Rails 3.1 limit user created objects
  26. has_and_belongs_to_many, avoiding dupes in the join table
  27. Rails gem rails3-jquery-autocomplete: How do I query multiple fields
  28. Rails best way to get previous and next active record object
  29. Rails: Order with nulls last
  30. Rails Object Relationships and JSON Rendering

Leave a Comment