Rails-FindEach.md

Pattern: Use of each instead of find_each

Issue: -

Description

This rule is used to identify usages of each and change them to use find_each instead. Looping through a collection of records from the database (using the all method, for example) is very inefficient since it will try to instantiate all the objects at once. In that case, batch processing methods allow you to work with the records in batches, thereby greatly reducing memory consumption.

Examples

# bad
User.all.each

# good
User.all.find_each

Default configuration

Attribute	Value
Include	app/models/**/*.rb

Further Reading

• RuboCop - Rails/FindEach
• https://github.com/bbatsov/rails-style-guide#find-each