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#Rails が自動付与した fk_rails_... という名前の外部キーをマイグレーションで削除する

Last updated at Posted at 2020-01-13

直接指定出来せるっぽい

もっと書き方やり方がありそうだけど

class RemoveUniqueIndexFromSomeTable < ActiveRecord::Migration[5.2]
  def change
    remove_foreign_key :some_tables, name: "fk_rails_43240587ab"
  end
end
db:migrate

== 20200112003437 RemoveUniqueIndexFromSomeTable: migrating ===============
-- remove_foreign_key(:some_tables, {:name=>"fk_rails_43240587ab"})
   -> 0.0250s
...

Original by Github issue

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