Hello all!
Could someone give me idea how to solve following problem.
In the model:
class A < ActiveRecord::Base
has_many :B
end
class B < ActiveRecord::Base
belongs_to :A
has_and_belongs_to_many :C
end
class C < ActiveRecord::Base
has_and_belongs_to_many :B
end
Is it possible to validate that C has only B’s that belong to the same
A ? %)
Will be happy to see any answers))