Parsing, validating and creating phone numbers
You can install the phone library as a gem
gem sources -a http://gemcutter.org gem install phone
Or as a Rails plugin
script/plugin install git://github.com/carr/phone.git
You can initialize a new phone object with the number, area code and country code.
Phone.new('5125486', '91', '385')
Phone.new(:number => '5125486', :area_code => '91', :country_code => '385')
You can create a new phone object by parsing from a string. Phone does it's best to detect the country and area codes:
Phone.parse '+385915125486' Phone.parse '00385915125486'
If the country or area code isn't given in the string, you must set it, otherwise it doesn't work:
Phone.parse '091/512-5486', :country_code => '385' Phone.parse '(091) 512 5486', :country_code => '385'
If you feel that it's tedious, set the default country code once (in your config/environment.rb):
Phone.default_country_code = '385' Phone.parse '091/512-5486' Phone.parse '(091) 512 5486'
Same goes for the area code:
Phone.parse '451-588', :country_code => '385', :area_code => '47'
Phone.default_country_code = '385' Phone.default_area_code = '47' Phone.parse '451-588'
Like it's stated above, Phone does it's best to automatically detect the country and area code while parsing. Do do this, phone uses data stored in data/countries.yml.
Each country code can have a regular expression named area_code that describes how the area code for that particular country looks like.
If an area_code regular expression isn't specified, the default, Phone::DEFAULT_AREA_CODE (correct for the US) is used.
Validating is very relaxed, basically it strips out everything that's not a number or '+' character:
Phone.valid? 'blabla 091/512-5486 blabla'
Formating is done via the format method. The method accepts a Symbol or a String.
When given a string, it interpolates the string with the following fields:
%c - country_code (385)
%a - area_code (91)
%A - area_code with leading zero (091)
%n - number (5125486)
%n1 - first @@n1_length characters of number (configured through Phone.n1_length), default is 3 (512)
%n2 - last characters of number (5486)
pn = Phone.parse('+385915125486') pn.to_s # => "+385915125486" pn.format("%A/%f-%l") # => "091/512-5486" pn.format("+ %c (%a) %n") # => "+ 385 (91) 5125486"
When given a symbol it is used as a lookup for the format in the Phone.named_formats hash.
pn.format(:europe) # => "+385 (0) 91 512 5486" pn.format(:us) # => "(234) 123 4567"
You can add your own custom named formats like so:
Phone.named_formats[:short] = '%A/%n1-%n2' pn.format(:short) # => 091/512-5486
Parse testing for different countries. Currently tested on: US, Croatia, Slovenia, Hungary, Serbia, Bosnia and Herzegovina, Germany.
Copyright © 2010 Tomislav Car, Infinum