instance method `validators_on`

Ruby on Rails 4.1.16

Since v3.0.20

Available in: v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

validators_on(*attributes)

List all validators that are being used to validate a specific attribute.

class Person
  include ActiveModel::Validations

  attr_accessor :name , :age

  validates_presence_of :name
  validates_inclusion_of :age, in: 0..99
end

Person.validators_on(:name)
# => [
#       #<ActiveModel::Validations::PresenceValidator:0x007fe604914e60 @attributes=[:name], @options={}>,
#    ]

Parameters

attributes rest

Source

# File activemodel/lib/active_model/validations.rb, line 235
      def validators_on(*attributes)
        attributes.flat_map do |attribute|
          _validators[attribute.to_sym]
        end
      end

Defined in activemodel/lib/active_model/validations.rb line 235 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveModel::Validations::ClassMethods

Signature

Parameters