Class: IpCidrValidator

Inherits:
ActiveModel::EachValidator
  • Object
show all
Defined in:
app/validators/ip_cidr_validator.rb

Overview

IpCidrValidator

Validates that an IP is a valid IPv4 or IPv6 CIDR address.

Example:

class Group < ActiveRecord::Base
  validates :ip, presence: true, ip_cidr: true
end

Instance Method Summary collapse

Instance Method Details

#validate_each(record, attribute, value) ⇒ Object

rubocop:disable Gitlab/NamespacedClass – This is a globally shareable validator, but it’s unclear what namespace it should belong in



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# File 'app/validators/ip_cidr_validator.rb', line 14

def validate_each(record, attribute, value)
  # NOTE: We want this to be usable for nullable fields, so we don't validate presence.
  #       Use a separate `presence` validation for the field if needed.
  return true if value.blank?

  # rubocop:disable Layout/LineLength -- The error message is bigger than the line limit
  unless valid_cidr_format?(value)
    record.errors.add(
      attribute,
      format(_(
        "IP '%{value}' is not a valid CIDR: IP should be followed by a slash followed by an integer subnet mask (for example: '192.168.1.0/24')"),
        value: value
      )
    )
    return
  end
  # rubocop:enable Layout/LineLength

  IPAddress.parse(value)
rescue ArgumentError => e
  record.errors.add(
    attribute,
    format(_("IP '%{value}' is not a valid CIDR: %{message}"), value: value, message: e.message)
  )
end