has_and_belongs_to_many

三,product has_many_and_belongs_to :related_product, class_name: 'Product', join_table: 'products_related_products', association_foreign_key: :related_...

2015年6月30日 - class Teacher < ActiveRecord::Base has_and_belongs_to_many :students end and class Student < ActiveRecord::Base has_and_belongs_to_many :tea...

2012年2月4日 -  belongs_to # 一对多,与 has_many,has_one 套用 has_one # 一对一 has_many # 一对多的另外一方 has_and_belongs_to_many # 多对多lgn21st · ...

ruby on rails - has_and_belongs_to_many vs has_many through -...

2006年3月29日 - 假设table1s和table2s具备many-to-many的关系,那么需要一个Join 表,has_and_belongs_to_many默认该表名字为table1s_table2s,这样建立好关联之后可以直...

has_many :through a has_and_belongs_to_many association

The belongs_to Association The has_one Association The has_many Association...That's followed by some tips and tricks for working with associations, and...guides.rubyonrails.org...  - 百度快照 - 

has_and_belongs_to_many (ActiveRecord::Associations::Class...