I'm trying to determine the proper ActiveModel realtionship for the following situation: there are pictures and there are different categories of them: foo, bar, baz and qux. A User can set one like and several comments per the picture.
I started with a Catregory and a Foo models. The simpliest approach could be - creatation of likes and comments properties for each of the Foo, Bar, Baz and Qux models. But I feel it's a silly approach... There might be a better one.
What is the best kind of realationship can be chosen for such a case?
Here's what I imagined reading your question (I've decided that your pictures were created by users, because your model looks a lot like a social network):
class User < ActiveRecord::Base
has_many :pictures
has_many :comments
has_one :like
end
class Picture < ActiveRecord::Base
belongs_to :user
belongs_to :category
has_many :likes
has_many :comments
end
class Category < ActiveRecord::Base
has_many :pictures
end
class Comment < ActiveRecord::Base
belongs_to :user
belongs_to :picture
end
class Like < ActiveRecord::Base
belongs_to :user
belongs_to :picture
end
Categories are rows of the categories Table. Instead of making one Model per category, you should have one model Category for all of them, with attributes like name, color or whatever you want.