Class: IpFormatValidator

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

Overview

Validates that value is an IPv4 or IPv6 address.

Instance Method Summary collapse

Instance Method Details

#validate_each(record, attribute, value) ⇒ void

This method returns an undefined value.

Validates that value is an IPv4 or IPv4 address. Ranges in CIDR or netmask notation are not allowed.

Parameters:

  • record (#errors, ActiveRecord::Base) —

    ActiveModel or ActiveRecord

  • attribute (Symbol) —

    name of IP address attribute.

  • value (String, nil) —

    IP address.

See Also:

  • IPAddr#ipv4?
  • IPAddr#ipv6?


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# File 'app/validators/ip_format_validator.rb', line 13

def validate_each(record, attribute, value)
  begin
    potential_ip = IPAddr.new(value)
  rescue ArgumentError
    record.errors[attribute] << 'must be a valid IPv4 or IPv6 address'
  else
    # if it includes a netmask, then it's not an IP address, but an IP range.
    if potential_ip.ipv4?
      if potential_ip.instance_variable_get(:@mask_addr) != IPAddr::IN4MASK
        record.errors[attribute] << 'must be a valid IPv4 or IPv6 address and not an IPv4 address range in CIDR or netmask notation'
      end
    elsif potential_ip.ipv6?
      if potential_ip.instance_variable_get(:@mask_addr) != IPAddr::IN6MASK
        record.errors[attribute] << 'must be a valid IPv4 or IPv6 address and not an IPv6 address range in CIDR or netmask notation'
      end
    end
  end
end