Is there a gem that normalizes and format US phone numbers in ruby?

Question

I was using phony to format phone numbers (meaning, if I put in xxx-xxx-xxxx it would convert to a string, and also tell if there is a (1) before to remove it).

But

Answer 1

def format_phone_numbers(n)
    "(#{n[-10..-8]}) #{n[-7..-5]}-#{n[-4..-1]}"
end

format_phone_numbers('555555555555')

"(555) 555-5555"

Answer 2

#RAILS_ROOT/lib/String.rb
class String
  def convert_to_phone
    number = self.gsub(/\D/, '').split(//)

    #US 11-digit numbers
    number = number.drop(1) if (number.count == 11 && number[0] == 1)

    #US 10-digit numbers
    number.to_s if (number.count == 10)

  end


  def format_phone
    return "#{self[0,3]}-#{self[3,3]}-#{self[6,4]}"
  end
end

"585-343-2070".convert_to_phone 
=> "5853432070"

"5853432070".convert_to_phone
=> "5853432070"

"1(585)343-2070".convert_to_phone.format_phone
=> "585-343-2070"

##Everything formatted as requested in Asker's various comments

Answer 3

I've never seen much in the way of a reliable telephone number formatter because it's just so hard to get it right. Just when you think you've seen everything, some other format comes along and wrecks it.

Ten digit North American numbers are perhaps the easiest to format, you can use a regular expression, but as soon as you encounter extensions you're in trouble. Still, you can kind of hack it yourself if you want:

def formatted_number(number)
  digits = number.gsub(/\D/, '').split(//)

  if (digits.length == 11 and digits[0] == '1')
    # Strip leading 1
    digits.shift
  end

  if (digits.length == 10)
    # Rejoin for latest Ruby, remove next line if old Ruby
    digits = digits.join
    '(%s) %s-%s' % [ digits[0,3], digits[3,3], digits[6,4] ]
  end
end

This will just wrangle eleven and ten digit numbers into the format you want.

Some examples:

formatted_number("1 (703) 451-5115")
 # => "(703) 451-5115"
formatted_number("555-555-1212")
 # => "(555) 555-1212"

Answer 4

I wrote this regex to match NANPA phone numbers with some conventions (e.g. for extensions) for PHP (thank god those days are over) and converted it over to a Rails validator a few months ago for a project. It works great for me, but it is more pragmatic than strictly to spec.

# app/validators/phone_number_validator.rb
class PhoneNumberValidator < ActiveModel::EachValidator
  @@regex = %r{\A(?:1(?:[. -])?)?(?:\((?=\d{3}\)))?([2-9]\d{2})(?:(?<=\(\d{3})\))? ?(?:(?<=\d{3})[.-])?([2-9]\d{2})[. -]?(\d{4})(?: (?:ext|x)\.? ?(\d{1,5}))?\Z}

  def validate_each (object, attribute, value)
    if m = value.match(@@regex)
      # format the phone number consistently
      object.send("#{attribute}=", "(#{m[1]}) #{m[2]}-#{m[3]}")
    else
      object.errors[attribute] << (options[:message] || "is not an appropriately formatted phone number")
    end
  end
end

# app/models/foobar.rb
class Foobar < ActiveRecord::Base
  validates :phone, phone_number: true
end

The saved/outputted format is like this: (888) 888-8888. Currently the output strips off the extension because I didn't need it. You can add it back in and change the format pretty easily (see the object.send line.

Answer 5

Earlier this year, I reviewed a bunch of ruby gems that parse and format phone numbers. They fall into a number of groups (see below). TLDR: I used 'phone'. It might work for you because you can specify a default country code that it uses if your phone number doesn't include one.

1) US-centric:

big-phoney (0.1.4)
phone_wrangler (0.1.3)
simple_phone_number (0.1.9)

2) depends on rails or active_record:

phone_number (1.2.0)
validates_and_formats_phones (0.0.7)

3) forks of 'phone' that have been merged back into the trunk:

elskwid-phone (0.9.9.4)
tfe-phone (0.9.9.1)

4) relies on you to know the region ahead of time

phoney (0.1.0)

5) Kind of almost works for me

phone (0.9.9.3)

6) does not contain the substring 'phone' in the gem name (edit: I see you tried this one)

phony (1.6.1)

These groupings may be somewhat unfair or out of date so feel free to comment. I must admit I was a little frustrated at the time at how many people had partially re-invented this particular wheel.

Answer 6

You could use rails number_to_phone method

see here: http://api.rubyonrails.org/classes/ActionView/Helpers/NumberHelper.html#method-i-number_to_phone