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Rails3で has_many through でしかも polymorphic な関連を実装していて、polymorphicなモデル側からhas_manyを探せるけど、逆のやり方に苦戦したのでメモ
User モデルは複数の Clubに属すことができて、Clubもまた複数の Userを受け入れられるという感じ。
最初にやってた方法
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user = User.find(1)
user.membered_clubs
# => ActiveRecord::HasManyThroughSourceAssociationNotFoundError:
Could not find the source association(s) :membable in model Membership.
Try 'has_many :membered_clubs, :through => :memberships, :source => <name>'. Is it one of :user or :club?
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This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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