rails4 でバルクアップデート : sonots:blog
GitHub - zdennis/activerecord-import: A library for bulk insertion of data into your database using ActiveRecord.
Activerecord-Import Activerecord-Import is a library for bulk inserting data using ActiveRecord. One of its major features is following activerecord associations and generating the minimal number of SQL insert statements required, avoiding the N+1 insert problem. An example probably explains it best. Say you had a schema like this: Publishers have Books Books have Reviews and you wanted to bulk in
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