Rails Model has_many with multiple foreign_keys

by

Found a simple answer on IRC that seems to work (thanks to Radar):

class Person < ActiveRecord::Base
  belongs_to :father, :class_name => 'Person'
  belongs_to :mother, :class_name => 'Person'
  has_many :children_of_father, :class_name => 'Person', :foreign_key => 'father_id'
  has_many :children_of_mother, :class_name => 'Person', :foreign_key => 'mother_id'
  def children
     children_of_mother + children_of_father
  end
end

More Related Contents:

  1. Rails ActiveRecord methods in different places [closed]
  2. Rails :dependent => :destroy VS :dependent => :delete_all
  3. Rails has_many :through Find by Extra Attributes in Join Model
  4. Ruby on Rails – Access controller variable from model
  5. Using helpers in model: how do I include helper dependencies?
  6. Rails: Skinny Controller vs. Fat Model, or should I make my Controller Anorexic?
  7. Format a string containing Phone numbers
  8. SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
  9. How to understand nil vs. empty vs. blank in Ruby
  10. Rails 4: List of available datatypes
  11. ActiveRecord.find(array_of_ids), preserving order
  12. In Ruby on Rails, how do I format a date with the “th” suffix, as in, “Sun Oct 5th”?
  13. How to create a deep copy of an object in Ruby?
  14. Rails: Access to current_user from within a model in Ruby on Rails
  15. What’s the best way to use SOAP with Ruby?
  16. Custom authentication strategy for devise
  17. Using Process.spawn as a replacement for Process.fork
  18. Rails update_attributes without save?
  19. how to solve “ruby installation is missing psych” error?
  20. Detect MIME type of uploaded file in Ruby
  21. How to rename rails controller and model in a project
  22. Using send_file to download a file from Amazon S3?
  23. Uniq by object attribute in Ruby
  24. What does do in rails erb?
  25. Protected and private methods in Rails
  26. Failed to build gem native extension — Rails install
  27. Rails: Overriding ActiveRecord association method
  28. Can you Distribute a Ruby on Rails Application without Source?
  29. Rails 2 to Rails 3 : using link_to instead of link_to_remote (including remote and update)
  30. Rails engines extending functionality

Leave a Comment