MONGOID-5899 Write conflict error when accessing embedded documents via [] operator after direct DB update #6076
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Pull request overview
This PR fixes a write conflict error (MONGOID-5899) that occurred when accessing embedded documents using the [] operator after a direct database update. The issue was caused by the process_raw_attribute method incorrectly marking relation attributes as changed when they were accessed, even though they hadn't been modified by the user.
Key Changes:
- Modified
process_raw_attributeto check if an attribute is a relation before marking it as changed - Added regression test to verify that accessing embedded documents via
[]after direct DB updates doesn't cause save conflicts
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| lib/mongoid/attributes.rb | Added relation check to prevent marking embedded document attributes as changed on access |
| spec/mongoid/attributes_spec.rb | Added test case to verify the fix prevents write conflict errors when accessing embedded documents |
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jamis
approved these changes
Dec 18, 2025
kyleburgess2025
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Dec 18, 2025
…ia [] operator after direct DB update (mongodb#6076) * Adds support for single hash input in nested attributes for has_many associations. * Fixing write conflict error when using [] to access embedded document * undoing accidental changes
kyleburgess2025
added a commit
that referenced
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Dec 19, 2025
…ia [] operator after direct DB update (#6077) * MONGOID-5899 Write conflict error when accessing embedded documents via [] operator after direct DB update (#6076) * Adds support for single hash input in nested attributes for has_many associations. * Fixing write conflict error when using [] to access embedded document * undoing accidental changes * Trigger workflows
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