mirror of
https://github.com/wahyd4/Libr.git
synced 2026-08-21 10:47:08 +10:00
25 lines
568 B
Ruby
25 lines
568 B
Ruby
class BookInstance < ActiveRecord::Base
|
|
attr_accessible :book_id, :user_id, :public
|
|
validates_presence_of :book_id, :user_id
|
|
belongs_to :book
|
|
belongs_to :user
|
|
|
|
delegate :name, :image,:isbn, to: :book, prefix:false
|
|
delegate :name, to: :user,prefix: true
|
|
|
|
has_many :borrow_records
|
|
has_many :borrowers,:source => :user , through: :borrow_records
|
|
|
|
|
|
def borrowed?
|
|
!borrow_records.where(return_date: nil).empty?
|
|
end
|
|
|
|
def current_borrower
|
|
if borrowed?
|
|
User.find_by_id borrow_records.where(return_date: nil)[0].user_id
|
|
end
|
|
end
|
|
|
|
end
|