solution/many-to-many Author model

[neugierige]

currently, we have:

class Author < ActiveRecord::Base
  has_many :books, through: :loans
  has_many :loans, dependent: :destroy
end

This suggests that the authors' relationship to their own books have to go through loans, which is illogical. It also states that authors have many loans, and that destroying loans would also destroy authors.

I propose the following:

class Author < ActiveRecord::Base
  has_many :books
end

[jrhorn424]

See #8 for possible resolution.