Rails-WhereMissing.md

Pattern: Missing use of where.missing(...)

Issue: -

Description

Use where.missing(...) to find missing relationship records.

This rule is enabled in Rails 6.1 or higher.

Examples

# bad
Post.left_joins(:author).where(authors: { id: nil })

# good
Post.where.missing(:author)

Further Reading

• Rails - Rails/WhereMissing
• https://rails.rubystyle.guide/#finding-missing-relationship-records