Make budgets translatable

app/controllers/admin/budgets_controller.rb

@@ -1,4 +1,5 @@
 class Admin::BudgetsController < Admin::BaseController
+  include Translatable
   include FeatureFlags
   feature_flag :budgets
 
@@ -56,8 +57,8 @@ class Admin::BudgetsController < Admin::BaseController
 
     def budget_params
       descriptions = Budget::Phase::PHASE_KINDS.map{|p| "description_#{p}"}.map(&:to_sym)
-      valid_attributes = [:name, :phase, :currency_symbol] + descriptions
-      params.require(:budget).permit(*valid_attributes)
+      valid_attributes = [:phase, :currency_symbol] + descriptions
+      params.require(:budget).permit(*valid_attributes, translation_params(Budget))
     end
 
 end

app/models/budget.rb

@@ -3,9 +3,14 @@ class Budget < ActiveRecord::Base
   include Measurable
   include Sluggable
 
+  translates :name, touch: true
+  include Globalizable
+
   CURRENCY_SYMBOLS = %w(€ $ £ ¥).freeze
 
-  validates :name, presence: true, uniqueness: true
+  before_validation :assign_model_to_translations
+
+  validates_translation :name, presence: true
   validates :phase, inclusion: { in: Budget::Phase::PHASE_KINDS }
   validates :currency_symbol, presence: true
   validates :slug, presence: true, format: /\A[a-z0-9\-_]+\z/

app/models/budget/translation.rb

@@ -0,0 +1,11 @@
+class Budget::Translation < Globalize::ActiveRecord::Translation
+  validate :name_uniqueness_by_budget
+
+  def name_uniqueness_by_budget
+    if Budget.joins(:translations)
+             .where(name: name)
+             .where.not("budget_translations.budget_id": budget_id).any?
+      errors.add(:name, I18n.t("errors.messages.taken"))
+    end
+  end
+end

app/models/concerns/globalizable.rb

@@ -8,6 +8,10 @@ module Globalizable
     def locales_not_marked_for_destruction
       translations.reject(&:_destroy).map(&:locale)
     end
+
+    def assign_model_to_translations
+      translations.each { |translation| translation.globalized_model = self }
+    end
   end
 
   class_methods do

app/views/admin/budgets/_form.html.erb

@@ -1,7 +1,16 @@
-<%= form_for [:admin, @budget] do |f| %>
+<%= render "admin/shared/globalize_locales", resource: @budget %>
+
+<%= translatable_form_for [:admin, @budget] do |f| %>
+
+  <%= render 'shared/errors', resource: @budget %>
 
   <div class="small-12 medium-9 column">
-    <%= f.text_field :name, maxlength: Budget.title_max_length %>
+    <%= f.translatable_fields do |translations_form| %>
+    <%= translations_form.text_field :name,
+        label: t("activerecord.attributes.budget.name"),
+        maxlength: Budget.title_max_length,
+        placeholder: t("activerecord.attributes.budget.name") %>
+    <% end %>
   </div>
 
   <div class="margin-top">

db/dev_seeds/budgets.rb

@@ -26,14 +26,17 @@ end
 
 section "Creating Budgets" do
   Budget.create(
-    name: "#{I18n.t('seeds.budgets.budget')} #{Date.current.year - 1}",
-    currency_symbol: I18n.t('seeds.budgets.currency'),
-    phase: 'finished'
+    name_en: "#{I18n.t("seeds.budgets.budget", locale: :en)} #{Date.current.year - 1}",
+    name_es: "#{I18n.t("seeds.budgets.budget", locale: :es)} #{Date.current.year - 1}",
+    currency_symbol: I18n.t("seeds.budgets.currency"),
+    phase: "finished"
   )
+
   Budget.create(
-    name: "#{I18n.t('seeds.budgets.budget')} #{Date.current.year}",
-    currency_symbol: I18n.t('seeds.budgets.currency'),
-    phase: 'accepting'
+    name_en: "#{I18n.t("seeds.budgets.budget", locale: :en)} #{Date.current.year}",
+    name_es: "#{I18n.t("seeds.budgets.budget", locale: :es)} #{Date.current.year}",
+    currency_symbol: I18n.t("seeds.budgets.currency"),
+    phase: "accepting"
   )
 
   Budget.all.each do |budget|

db/migrate/20190118135741_add_budget_translations.rb

@@ -0,0 +1,16 @@
+class AddBudgetTranslations < ActiveRecord::Migration
+
+  def self.up
+    Budget.create_translation_table!(
+      {
+        name: :string
+      },
+      { migrate_data: true }
+    )
+  end
+
+  def self.down
+    Budget.drop_translation_table!
+  end
+
+end

db/schema.rb

@@ -266,6 +266,17 @@ ActiveRecord::Schema.define(version: 20190205131722) do
     t.datetime "updated_at",    null: false
   end
 
+  create_table "budget_translations", force: :cascade do |t|
+    t.integer  "budget_id",  null: false
+    t.string   "locale",     null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.string   "name"
+  end
+
+  add_index "budget_translations", ["budget_id"], name: "index_budget_translations_on_budget_id", using: :btree
+  add_index "budget_translations", ["locale"], name: "index_budget_translations_on_locale", using: :btree
+
   create_table "budget_valuator_assignments", force: :cascade do |t|
     t.integer  "valuator_id"
     t.integer  "investment_id"

spec/features/admin/budgets_spec.rb

@@ -7,6 +7,11 @@ feature 'Admin budgets' do
     login_as(admin.user)
   end
 
+  it_behaves_like "translatable",
+                  "budget",
+                  "edit_admin_budget_path",
+                  %w[name]
+
   context 'Feature flag' do
 
     background do
@@ -95,7 +100,7 @@ feature 'Admin budgets' do
       visit admin_budgets_path
       click_link 'Create new budget'
 
-      fill_in 'budget_name', with: 'M30 - Summer campaign'
+      fill_in "Name", with: "M30 - Summer campaign"
       select 'Accepting projects', from: 'budget[phase]'
 
       click_button 'Create Budget'
@@ -112,6 +117,18 @@ feature 'Admin budgets' do
       expect(page).to have_css("label.error", text: "Name")
     end
 
+    scenario "Name should be unique" do
+      create(:budget, name: "Existing Name")
+
+      visit new_admin_budget_path
+      fill_in "Name", with: "Existing Name"
+      click_button "Create Budget"
+
+      expect(page).not_to have_content "New participatory budget created successfully!"
+      expect(page).to have_css("label.error", text: "Name")
+      expect(page).to have_css("small.error", text: "has already been taken")
+    end
+
   end
 
   context 'Destroy' do
@@ -174,6 +191,31 @@ feature 'Admin budgets' do
         end
       end
     end
+
+    scenario "Changing name for current locale will update the slug if budget is in draft phase", :js do
+      budget.update(phase: "drafting")
+      old_slug = budget.slug
+
+      visit edit_admin_budget_path(budget)
+
+      select "Español", from: "translation_locale"
+      fill_in "Name", with: "Spanish name"
+      click_button "Update Budget"
+
+      expect(page).to have_content "Participatory budget updated successfully"
+      expect(budget.reload.slug).to eq old_slug
+
+      visit edit_admin_budget_path(budget)
+
+      click_link "English"
+      fill_in "Name", with: "New English Name"
+      click_button "Update Budget"
+
+      expect(page).to have_content "Participatory budget updated successfully"
+      expect(budget.reload.slug).not_to eq old_slug
+      expect(budget.slug).to eq "new-english-name"
+    end
+
   end
 
   context 'Update' do
@@ -186,7 +228,7 @@ feature 'Admin budgets' do
       visit admin_budgets_path
       click_link 'Edit budget'
 
-      fill_in 'budget_name', with: 'More trees on the streets'
+      fill_in "Name", with: "More trees on the streets"
       click_button 'Update Budget'
 
       expect(page).to have_content('More trees on the streets')

spec/models/budget_spec.rb

@@ -8,11 +8,20 @@ describe Budget do
 
   describe "name" do
     before do
-      create(:budget, name: 'object name')
+      budget.update(name_en: "object name")
     end
 
-    it "is validated for uniqueness" do
-      expect(build(:budget, name: 'object name')).not_to be_valid
+    it "must not be repeated for a different budget and same locale" do
+      expect(build(:budget, name_en: "object name")).not_to be_valid
+    end
+
+    it "must not be repeated for a different budget and a different locale" do
+      expect(build(:budget, name_fr: "object name")).not_to be_valid
+    end
+
+    it "may be repeated for the same budget and a different locale" do
+      budget.update(name_fr: "object name")
+      expect(budget.translations.last).to be_valid
     end
   end
 

spec/shared/features/translatable.rb

@@ -329,6 +329,8 @@ def update_button_text
     "Update notification"
   when "Poll"
     "Update poll"
+  when "Budget"
+    "Update Budget"
   when "Poll::Question", "Poll::Question::Answer"
     "Save"
   when "SiteCustomization::Page"