Provides 3 form select helpers for Dial Codes, Capital Cities and Currencies. The data is retrieved from the CountriesNow API. This data can be viewed in the default_options.yml file in the lib directory.

gem install country_options_select

country_dial_code_select_tag :dial_code_field
country_capital_select_tag :capital_field
country_currency_select_tag :currency_field

form.country_dial_code_select :dial_code_field
form.country_capital_select :capital_field
form.country_currency_select :currency_field

There are custom arguments that can be passed to these selects:

Displayed text format of each dropdown option, options are currency, dial_code, capital, iso_code and name:

text_format: '%{iso_code} - Country name: %{name}, Currency: %{currency}'

Array for sorting by particular fields, options are currency, dial_code, capital, iso_code and name, default is asc, and desc can be added to each option:

order: [:currency, [:dial_code, :desc], :name]

(Default ordering is name: :asc, except for capital_select which is capital: :asc)

Hash of {ISO code => {select type => select type value}} for options to be added or updated (meant for making updates to individual selects, to make application-wide updates use CountryOptionsSelect.update_options, explained in the custom options section):

updates: {gb: {name: 'UK'}, zz: {name: 'New country', currency: 'ZZZ'}}

Array of ISO codes for options to be removed (meant for removing countries from individual selects, to make application-wide removals use CountryOptionsSelect.remove_options, explained in the custom options section):

removals: [:gb, :au]

Add HTML attributes for specific dropdown options, include options either by ISO code or value:

html_attributes: {gb: {class: 'option'}, 'Tokyo' => {class: 'capital-option'}}

Function the same as they do for options_for_select, can select or disable one or multiple options using an option's value:

selected: '+1684', disabled: ['+355', '+213']

Allows for complete override of country options, ignoring any default or custom options:

options_override: {aa: {name: 'Lone country', dial_code: '+1234'}

If the default country options require changes, there are a few customization options available:

To hard code changes to the default options, you can add a country_options_select.yml file to the config directory of your app, and add overrides with keys in the same format as they are in the default_options.yml file. In order to remove a country or a select type for a country, add the relevant key but leave its value blank.

There are methods to add/update the country_options_select.yml file:

Accepts hash of {ISO code => {select type => select type value}}, any keys that don't exist will be added as new options:

options = {gb: {name: 'UK'}, zz: {name: 'New country', currency: 'ZZZ'}}
CountryOptionsSelect.update_options(options)

country_options_select.yml file produced:

GB:
  name: UK
ZZ:
  name: New country
  currency: ZZZ

Accepts array of either ISO codes of countries to be removed, or {ISO code => [select types]}, for select types of specific countries to be removed:

options = [:af, :al, dz: [:dial_code, :capital], as: [:currency], ad: [:capital]]
CountryOptionsSelect.remove_options(options)

country_options_select.yml file produced:

AF:
AL:
DZ:
  dial_code:
  capital:
AS:
  currency:
AD:
  capital:

If there are any updates to the data from the API, you can run:

CountryOptionsSelect.update_options_from_api

To add these updates to country_options_select.yml. Note that existing custom options will override any incoming API changes.

As explained previously the updates, removals and options_override arguments can be added to a specific form select to update its options, if that is required. These will override any existing custom options added to the country_options_select.yml file.

You can also add I18n translations for options in a dictionary file under a country_options_select key. These should have the same tree structure as default_options.yml:

country_options_select:
  gb:
    name: UK
    currency: Pound

MIT License