Rails-SelectMap.md

Pattern: Missing use of pluck(:column_name)

Issue: -

Description

Checks for uses of select(:column_name) with map(&:column_name). These can be replaced with pluck(:column_name).

There also should be some performance improvement since it skips instantiating the model class for matches.

Examples

# bad
Model.select(:column_name).map(&:column_name)

# good
Model.pluck(:column_name)

Further Reading

• RuboCop - Rails/SelectMap