What type of model relationship should be used instead of belongs_to, to indicate belonging to several model objects?

Question

Ruby on Rails

Two models:
project authors (author) and projects (project).
The authors have several projects:

class Author < ActiveRecord::Base
  has_many :projects
end

feedback (projects belong to the authors):

class Project < ActiveRecord::Base
  belongs_to :author
end

However, some projects were written jointly by several authors, so belongs_to is not appropriate, and instead of the "projects" table it looks like:

integer :id
string  :name
integer :author_id

something like:

integer  :id
string   :name
array    :author_ids

What type of relationship is suitable for this option instead of belongs_to?

Answer 1

Try using HATBM
This will require an additional plateauthors_projects