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Find in batches when destroying dependent associations
Reported by Ben Johnson | May 20th, 2010 @ 03:01 PM
This is more of an idea I wanted to toss up, if people like it I'll work on a commit. But find_each and find_in_batches are both in ActiveRecord. Wouldn't it make sense for the automatic hooks on destroying associations to use this? Instead of trying to load up all of the objects at once and destroy them.
Comments and changes to this ticket
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Rizwan Reza May 21st, 2010 @ 12:42 AM
- no changes were found...
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Santiago Pastorino February 2nd, 2011 @ 04:38 PM
- State changed from new to open
- Importance changed from to Low
This issue has been automatically marked as stale because it has not been commented on for at least three months.
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Santiago Pastorino February 2nd, 2011 @ 04:38 PM
- State changed from open to stale
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swalterd April 6th, 2011 @ 05:20 PM
I would like something like this in Rails. Either as the default for dependent => :destroy or as an another dependent option. Like :destroy_in_batches. For an object that has a lot of associated objects, and when each of those objects has many associated objects, the memory cost of loading all of them into before your run the destroy is high. Right now to solve the problem we do two things. First we do a soft delete of the object and then kick off a delayed job to do the real delete. But then we also have to create before_destroy methods for some associations for speed and memory consumption reasons. These then do the batch destroy.
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