Rails 4 - Country Select & Simple Form

Question

I am trying to make an app in Rails 4. I use simple form for forms and country_select gem for country lists.

I have an address model, which includes this method:

def country_name
    self.country = ISO3166::Country[country]
    country.translations[I18n.locale.to_s] || country.name
  end

When I try to save a new address, I get this error:

undefined method `translations' for "Australia":String

Can anyone see what's wrong with this method definition?

If I change my view to:

<% if @profile.addresses.any? %>
        <%= @profile.addresses.first.country.titlecase %> 
    <% else %>
        <span class="profileeditlink">
            <%= link_to "Add your location", new_address_path %>
        </span>
    <% end %>   

Then the record displays - but as AU instead of Australia (which is what the method in the address model provides).

Address table:

create_table "addresses", force: :cascade do |t|
    t.string   "unit"
    t.string   "building"
    t.string   "street_number"
    t.string   "street"
    t.string   "city"
    t.string   "region"
    t.string   "zip"
    t.string   "country"
    t.boolean  "main_address"
    t.boolean  "project_offsite"
    t.string   "time_zone"
    t.float    "latitude"
    t.float    "longitude"
    t.integer  "addressable_id"
    t.integer  "addressable_type"
    t.datetime "created_at",       null: false
    t.datetime "updated_at",       null: false
  end

  add_index "addresses", ["addressable_type", "addressable_id"], name: "index_addresses_on_addressable_type_and_addressable_id", unique: true, using: :btree

TAKING JAEHYEN'S SUGGESTION,

I changed my country name method in the address model to:

def country_name
    # self.country = ISO3166::Country(country)
    # country.translations[I18n.locale.to_s] || country.name
    iso_country = ISO3166::Country.find_by_name[country] # `country` should be name like 'Australia'
    iso_country.translations[I18n.locale.to_s] || iso_country.name
  end

I get this error:

undefined method `translations' for nil:NilClass

ANOTHER ATTEMPT:

I found this resource: http://www.scriptscoop.net/t/4ee6d5ef4577/displaying-countries-using-country-select-gem-in-rails-4.html

I tried changing my form input to:

        <%= f.country_select  :country, priority: [ "Australia", "New Zealand", "United Kingdom" ] %>

It still just displays the country code instead of the country name. I'm stuck.

ANOTHER ATTEMPT

I found this post: Rails Simple_Form: How to show long name of the country

The answer in this post suggests defining country_name as:

  def country_name
    country = ISO3166::Country[country_code]
    country.translations[I18n.locale.to_s] || country.name
  end

This is slightly different to my previous attempts, however, when I try this, I get this error:

undefined local variable or method `country_code' for #<Address:0x007fbae5bfb290>

I tried changing the method to:

  def country_name
    self.country = ISO3166::Country[country_code]
    country.translations[I18n.locale.to_s] || country.name
  end

This gives the same error as the formulation that does not use 'self'. I think these attempts don't work because the attribute in my address table is called 'country'.

When i change the method to:

  def country_name
    self.country = ISO3166::Country[country]
    country.translations[I18n.locale.to_s] || country.name
  end

I get the error with the word 'translations'. When I delete '.translations' from the method, I get an error with the word 'name'.

I'm losing my marbles trying to figure this out.

ANOTHER ATTEMPT

I tried adding the countries gem to my gem file (above country_select).

Nothing changes when I bundle this gem. Same problem.

ANOTHER ATTEMPT

Trying again (as I originally had the method defined), but with countries gem installed (above country_select gem):

  def country_name
    self.country = ISO3166::Country[country]
    country.translations[I18n.locale.to_s] || country.name
  end

I get this error: undefined method `translations' for "Cayman Islands":String

This is the same problem that I originally started with, so I don't think that adding the countries gem has helped advance toward a solution.

Answer 1

This code work well for me. I had country column in my User table. On my model :-

   def country_name
    country = self.country
    ISO3166::Country[country]
   end

in the form :-

    <%= form_for @user do |f| %>
       <%= country_select("user", "country") %>
    <% end %>