ActiveRecord::Associations::ClassMethods

Ruby on Rails 8.0.2 Module ActiveRecord::Associations::ClassMethods activerecord/lib/active_record/associations.rb Active Record Associations Associations are a set of macro-like class methods for tying objects together through foreign keys. They express relationships like “Project has one Project Manager” or “Project belongs to a Portfolio”. Each macro adds a number of methods to the class which

[asayamakk]

関連を定義したときに生えるメソッド一覧

[snaka72]

“ | | belongs_to | generated methods | belongs_to | :polymorphic | has_one ----------------------------------+------------+--------------+--------- other(force_reload=false) | X | X | X other=(other) | X | X | X build_other(attributes={}) | X | | X create_other(attributes={}) | X | | X create_othe

[suginoy]

昨日ハマったやつ。 “Using polymorphic associations in combination with single table inheritance (STI) is a little tricky.”

[tsimo]

“If you are using a belongs_to on the join model, it is a good idea to set the :inverse_of option on the belongs_to, which will mean that the following example works correctly (where tags is a has_many :through association):”

[kattton]

proxy_association.owner てなんだよクソ、用意しておいてくれて本当にありがとうございました。

[maroekun]

ActiveRecord ClassMethod

[yuku_t]

ActiveRecord

[takuma510]

ActiveRecord::Baseのbelongs_toとかhas_oneとかhas_manyとか

[InoHiro]

has_and_belongs_to_many

[ukstudio]

目を通しておく