db/migrate/20260706014551_add_foreign_key_on_occurrences_event_id.rb


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class AddForeignKeyOnOccurrencesEventId < ActiveRecord::Migration[8.1]
  def change
    add_index :occurrences, :event_id
    add_foreign_key :occurrences, :events, on_delete: :cascade, deferrable: :immediate
  end
end