Contents

# frozen_string_literal: true

module ActiveModel
  module Validations
    # == \Active \Model Absence Validator
    class AbsenceValidator < EachValidator #:nodoc:
      def validate_each(record, attr_name, value)
        record.errors.add(attr_name, :present, **options) if value.present?
      end
    end

    module HelperMethods
      # Validates that the specified attributes are blank (as defined by
      # Object#present?). Happens by default on save.
      #
      #   class Person < ActiveRecord::Base
      #     validates_absence_of :first_name
      #   end
      #
      # The first_name attribute must be in the object and it must be blank.
      #
      # Configuration options:
      # * <tt>:message</tt> - A custom error message (default is: "must be blank").
      #
      # There is also a list of default options supported by every validator:
      # +:if+, +:unless+, +:on+, +:allow_nil+, +:allow_blank+, and +:strict+.
      # See <tt>ActiveModel::Validations#validates</tt> for more information
      def validates_absence_of(*attr_names)
        validates_with AbsenceValidator, _merge_attributes(attr_names)
      end
    end
  end
end

Version data entries

41 entries across 41 versions & 6 rubygems

Version	Path
activemodel-6.1.7.10	lib/active_model/validations/absence.rb
activemodel-6.1.7.9	lib/active_model/validations/absence.rb
activemodel-6.1.7.8	lib/active_model/validations/absence.rb
activemodel-6.1.7.7	lib/active_model/validations/absence.rb
scrapbook-0.3.2	vendor/ruby/2.7.0/gems/activemodel-6.1.6.1/lib/active_model/validations/absence.rb
activemodel-6.1.7.6	lib/active_model/validations/absence.rb
activemodel-6.1.7.5	lib/active_model/validations/absence.rb
activemodel-6.1.7.4	lib/active_model/validations/absence.rb
scrapbook-0.3.1	vendor/ruby/2.7.0/gems/activemodel-6.1.6.1/lib/active_model/validations/absence.rb
activemodel-6.1.7.3	lib/active_model/validations/absence.rb
activemodel-6.1.7.2	lib/active_model/validations/absence.rb
activemodel-6.1.7.1	lib/active_model/validations/absence.rb
activemodel-6.1.7	lib/active_model/validations/absence.rb
activemodel-6.1.6.1	lib/active_model/validations/absence.rb
activemodel-6.1.6	lib/active_model/validations/absence.rb
activemodel-6.1.5.1	lib/active_model/validations/absence.rb
activemodel-6.1.5	lib/active_model/validations/absence.rb
activemodel-6.1.4.7	lib/active_model/validations/absence.rb
activemodel-6.1.4.6	lib/active_model/validations/absence.rb
activemodel-6.1.4.5	lib/active_model/validations/absence.rb