Rails-HasManyOrHasOneDependent.md

Pattern: Missing :dependent option for has_many/has_one

Issue: -

Description

This rule looks for has_many or has_one associations that don't specify a :dependent option.

Examples

# bad
class User < ActiveRecord::Base
  has_many :comments
  has_one :avatar
end

# good
class User < ActiveRecord::Base
  has_many :comments, dependent: :restrict_with_exception
  has_one :avatar, dependent: :destroy
end

Default configuration

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

Further Reading

• RuboCop - Rails/HasManyOrHasOneDependent
• https://github.com/bbatsov/rails-style-guide#has_many-has_one-dependent-option