Created
May 7, 2014 18:57
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Active Record following
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| # Study has_many, belongs_to methods (10 or so) | |
| ActiveRecord::Migration.create_table :followings do |t| | |
| t.belongs :follower | |
| t.belong :stalked | |
| end | |
| ActiveRecord::Migrator.up "db/migrate" | |
| class User < ActiveRecord::Base | |
| # I follow people. | |
| has_many :followings, foreign_key: "follower_id" | |
| has_many: :stalked_users, through: :followings, source: :stalked | |
| # People follow me. | |
| has_many :opposite_followings, class_name: "Following", foreign_key: "stalked_id" | |
| has_many :followers, through: :opposite_followings, source: :follower | |
| def follow(user) | |
| stalked_users << user | |
| end | |
| def stop_followin! | |
| stalked_users.clear | |
| end | |
| def so_lonely? | |
| end | |
| end | |
| class Following < ActiveRecord::Base | |
| belongs_to :follower, class_name: "User" | |
| belongs_to :stalked, class_name: "User" | |
| end |
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