https://github.com/telent/ar-as-batches

Retrieve AR objects from a query in batches
https://github.com/telent/ar-as-batches

Last synced: about 1 month ago
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Retrieve AR objects from a query in batches

• Host: GitHub
• URL: https://github.com/telent/ar-as-batches
• Owner: telent
• License: mit
• Created: 2012-05-05T15:30:49.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2013-11-04T16:55:19.000Z (about 11 years ago)
• Last Synced: 2023-03-10T23:27:21.135Z (over 1 year ago)
• Language: Ruby
• Homepage: http://ww.telent.net/2012/5/4/changing_sort_order_with_activerecord_find_in_batches
• Size: 97.7 KB
• Stars: 14
• Watchers: 0
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# ActiveRecord::Relation#as_batches

      Users.where(country_id: 44).as_batches(:batch_size=>200) do |user|

        user.party_all_night!

      end

`ar-as-batches` is what you (might) need if you were hoping `#find_each`

would solve your problem and are disappointed to find that it doesn't.

Like `#find_each` it is intended for batch processing of large (or

unknown) numbers of records that would require excessive memory if an

object for each of the complete result set were created at once.  It

retrieves records from your relation in batches of 1000 (or as

specified by the `:batch_size` option) and yields each record.

Unlike `#find_each` it honours `order`, `limit` and `offset` options

on your query, so if you want records in reverse chronological order

instead of ascending id order, and you want to start on page 2:

you're welcome.