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Created March 31, 2015 02:27
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[Rails 4.x] bulk insertをupdateでもしたいときにはupdate_allがあります ref: http://qiita.com/tsumekoara/items/cf8cf3bbf296ecb8d2c7
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file0.txt
gem 'activerecord-import'
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file1.txt
# openがfalseのレコードをすべてtrueに変更したい
Shop.where(open: false).update_all(open: true)
# 全部のレコードをopen: trueに
Shop.update_all open: true
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