如何自定义选项以获取完整的国家/地区名称作为 country_select gem 的值？

Question

I have used country_select gem, it working fine, now I want to set option value as full country name same as what it displayed in dropdown, not contry code.

for eg: I am getting like below:

<select id="order_ship_country" name="order[ship_country]">
    <option value="AU">Australia</option>
    <option value="CA">Canada</option>
    <option value="GB">United Kingdom</option>
    <option value="US">United States</option>
</select>

But I am expecting like this:

<select id="order_ship_country" name="order[ship_country]">
    <option value="Australia">Australia</option>
    <option value="Canada">Canada</option>
    <option value="United Kingdom">United Kingdom</option>
    <option value="United States">United States</option>
</select>

Thanks in advance

Answer 1

If you are using it in the User model, as explained from their doc , you create an instance method called country_name , that will return the country name of that user. Also remember to replace country_code with the attribute of your User model, that you are using to store that country code.

class User < ActiveRecord::Base

  # Assuming country_select is used with User attribute `country_code`
  # This will attempt to translate the country name and use the default
  # (usually English) name if no translation is available
    def country_name
      country = ISO3166::Country[country_code]
      country.translations[I18n.locale.to_s] || country.name
    end
end

then you use the select form helper

select("user", "country_code", User.all.collect {|u| [ u.country_name, u.country_code ] })

this should generate

<select name="user[country_code]" id="user_country_code">
  <option value="AF">Africa</option>
  <option value="IT">Italy</option>
  <option value="FR">France</option>
</select>

Answer 2

1/ Make an initializer

# config/initializers/country_select.rb

CountrySelect::FORMATS[:with_full_country_name] = lambda do |country|
  [
    country.name,
    country.alpha2,
    {
      'value' => country.name,
    }
  ]
end

2/ Call it in your view with format

<%= country_select("user", "country", format: :with_full_country_name) %>

As explained in the documentation : https://github.com/stefanpenner/country_select#using-a-custom-formatter