Rails-RedundantAllowNil.md

Pattern: Redundant allow_nil

Issue: -

Description

Checks Rails model validations for a redundant allow_nil when allow_blank is present.

Examples

# bad
validates :x, length: { is: 5 }, allow_nil: true, allow_blank: true

# bad
validates :x, length: { is: 5 }, allow_nil: false, allow_blank: true

# bad
validates :x, length: { is: 5 }, allow_nil: false, allow_blank: false

# good
validates :x, length: { is: 5 }, allow_blank: true

# good
validates :x, length: { is: 5 }, allow_blank: false

# good
# Here, `nil` is valid but `''` is not
validates :x, length: { is: 5 }, allow_nil: true, allow_blank: false

Configurable attributes

Name	Default value
Include	app/models/**/*.rb

Further Reading

• RuboCop - Rails/RedundantAllowNil