I have the following setup:

class Publication < ActiveRecord::Base
  has_and_belongs_to_many :authors, :class_name=>'Person', :join_table => 'authors_publications'
  has_and_belongs_to_many :editors, :class_name=>'Person', :join_table => 'editors_publications'
end

class Person < ActiveRecord::Base
  has_and_belongs_to_many :publications
end

With this setup I can do stuff like Publication.first.authors. But if I want to list all publications in which a person is involved Person.first.publications, an error about a missing join table people_publications it thrown. How could I fix that?

Should I maybe switch to separate models for authors and editors? It would however introduce some redundancy to the database, since a person can be an author of one publication and an editor of another.