Example for using the phonelib gem.

ruby_phonelib_validation_example_za.rb

# Using the 'phonelib' gem as it's based on Googles libphonenumber library.
# https://github.com/daddyz/phonelib

require 'phonelib'
require 'active_support'

# Set South Africa as the default country
Phonelib.default_country = "ZA"
Phonelib.extension_separate_symbols = ["x", ";"]

def normalize_phone(phone)
  Phonelib.parse(phone).full_e164.presence
end

def formatted_phone(phone)
  parsed_phone = Phonelib.parse(phone)
  return phone if parsed_phone.invalid?

  formatted =
    if parsed_phone.country_code == "1"
      parsed_phone.full_national
    else
      parsed_phone.full_international
    end
  formatted.gsub!(";", " x")
  formatted
end

def test_number(phone)
  puts "#" * 20
  puts "Checking: " + phone

  phone = normalize_phone(phone)

  unless phone.length.eql?(12)
    puts "Not a valid number !!!"
    return
  end
  puts "Normalised: " + phone

  phone = formatted_phone(phone)
  puts "Formatted: " + phone
end

test_number "08255555555" # Too many numbers
test_number "082555555" # Too few numbers

test_number "0995555555" # Non valid three digit area code
test_number "0595555555" # Non valid three digit area code

test_number "082-555-5555" # Valid
test_number "0825555555" # Valid
test_number "(082)555-5555" # Valid
test_number "+27 (82)555-5555" # Valid
test_number "27825555555" # Valid
test_number "0027825555555" # Valid


# /bin/zsh -c "bash -c 'env RBENV_VERSION=2.7.2 /usr/local/Cellar/rbenv/1.1.2/libexec/rbenv exec ruby '\"'\"'/Users/davidteren/Library/Application Support/JetBrains/RubyMine2021.1/scratches/scratch_50.rb'\"'\"''"
#
####################
# Checking: 08255555555
# Not a valid number !!!
# ####################
# Checking: 082555555
# Not a valid number !!!
# ####################
# Checking: 0995555555
# Not a valid number !!!
# ####################
# Checking: 0595555555
# Not a valid number !!!
# ####################
# Checking: 082-555-5555
# Normalised: +27825555555
# Formatted: +27 82 555 5555
# ####################
# Checking: 0825555555
# Normalised: +27825555555
# Formatted: +27 82 555 5555
# ####################
# Checking: (082)555-5555
# Normalised: +27825555555
# Formatted: +27 82 555 5555
# ####################
# Checking: +27 (82)555-5555
# Normalised: +27825555555
# Formatted: +27 82 555 5555
# ####################
# Checking: 27825555555
# Normalised: +27825555555
# Formatted: +27 82 555 5555
# ####################
# Checking: 0027825555555
# Normalised: +27825555555
# Formatted: +27 82 555 5555
#
# Process finished with exit code 0