ExtIPAddr
Monkey patch for ruby built-in IPAddr class to make it support CIDR notation.
IPAddr.new('192.0.2.1/24')
# => #<IPAddr: IPv4:192.0.2.1/255.255.255.0>
IPAddr.new('2001:db8::1/64')
# => #<IPAddr: IPv6:2001:0db8:0000:0000:0000:0000:0000:0001/ffff:ffff:ffff:ffff:0000:0000:0000:0000>Why we need this?
This gem is intended to use with ActiveRecord and PostgreSQL. With this gem installed, you can store IP address with prefix length information (e.g. "192.0.2.1/24", "2001:db8::1/64") into inet type columns.
ActiveRecord itself supports PostgreSQL inet type since Rails 4, but it maps to ruby built-in IPAddr class which does not support CIDR notation by default. This gem enables it by tweaking IPAddr class.
Installation
Add this line to your application's Gemfile:
gem 'ext_ipaddr'And then execute:
$ bundle
Or install it yourself as:
$ gem install ext_ipaddr
Usage
require 'ext_ipaddr'
IPAddr.new('192.0.2.1/24')
# => #<IPAddr: IPv4:192.0.2.1/255.255.255.0>
IPAddr.new('2001:db8::1/64')
# => #<IPAddr: IPv6:2001:0db8:0000:0000:0000:0000:0000:0001/ffff:ffff:ffff:ffff:0000:0000:0000:0000>
IPAddr.new('2001:db8::1/64').to_cidr_s
# => "2001:db8::1/64"
IPAddr.new('2001:db8::1/64').prefix_length
# => 64
IPAddr.new('192.0.2.1/24') == IPAddr.new('192.0.2.1/24')
# => true
IPAddr.new('192.0.2.1/24') == IPAddr.new('192.0.2.1/32')
# => falseContributing
Bug reports and pull requests are welcome on GitHub at https://github.com/s2ugimot/ext_ipaddr