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【Rails】ActiveStorageはdependent: :destroyをつけなくてもよい

Posted at 2022-10-13

環境

Rails 6.0.1
Ruby 2.6.3
PostgreSQL 11.16

app/models/user.rb

has_one_attached :avatar

If the :dependent option isn't set, the attachment will be purged (i.e. destroyed) whenever the record is destroyed.

has_one_attached :avatar, dependent: :destroy

のようにオプションつけなくても、親モデルが削除されたら付随するavatarも削除してくれる！