Audit changes in investment translations

Note the user interface could certainly be improved, as it doesn't show
which languages have changed.

app/controllers/admin/budget_investment_audits_controller.rb

@@ -1,7 +1,7 @@
 class Admin::BudgetInvestmentAuditsController < Admin::BaseController
   def show
     investment = Budget::Investment.find(params[:budget_investment_id])
-    @audit = investment.audits.find(params[:id])
+    @audit = investment.own_and_associated_audits.find(params[:id])
 
     render "admin/audits/show"
   end

app/models/budget/investment.rb

@@ -33,6 +33,11 @@ class Budget
     include Globalizable
 
     audited on: [:update, :destroy]
+    has_associated_audits
+    translation_class.class_eval do
+      audited associated_with: :globalized_model,
+              only: Budget::Investment.translated_attribute_names
+    end
 
     belongs_to :author, -> { with_hidden }, class_name: "User", inverse_of: :budget_investments
     belongs_to :heading

app/views/admin/audits/_audits.html.erb

@@ -16,7 +16,7 @@
       </tr>
     </thead>
     <tbody>
-      <% resource.audits.order(:created_at).each do |audit| %>
+      <% resource.own_and_associated_audits.order(:created_at).each do |audit| %>
         <% audit.audited_changes.each do |field, (old_value, new_value)| %>
           <tr>
             <td class="text-center"><%= audit.id %></td>

config/initializers/routes_hierarchy.rb

@@ -14,7 +14,7 @@ module ActionDispatch::Routing::UrlFor
     when "ProgressBar"
       [*resource_hierarchy_for(resource.progressable), resource]
     when "Audit"
-      [*resource_hierarchy_for(resource.auditable), resource]
+      [*resource_hierarchy_for(resource.associated || resource.auditable), resource]
     when "Legislation::Annotation"
       [resource.draft_version.process, resource.draft_version, resource]
     when "Legislation::Proposal", "Legislation::Question", "Legislation::DraftVersion"

spec/features/admin/change_log_spec.rb

@@ -48,11 +48,9 @@ describe "Admin change log" do
       expect(page).to have_content(budget_investment.heading.name)
       expect(page).to have_content("There are not changes logged")
 
-      budget_investment.update!(title: "test")
-
-      visit admin_budget_budget_investments_path(budget_investment.budget)
-
-      click_link budget_investment.title
+      click_link "Edit"
+      fill_in "Title", with: "test"
+      click_button "Update"
 
       expect(page).not_to have_content("There are not changes logged")
       expect(page).to have_content("Change Log")