Use a different controller for investment audits

The same way we do for milestones. We also make the code more consistent
since the view was already in a separate folder.

app/controllers/admin/budget_investment_audits_controller.rb

@@ -0,0 +1,8 @@
+class Admin::BudgetInvestmentAuditsController < Admin::BaseController
+  def show
+    investment = Budget::Investment.find(params[:budget_investment_id])
+    @audit = investment.audits.find(params[:id])
+
+    render "admin/audits/show"
+  end
+end

app/controllers/admin/budget_investments_controller.rb

@@ -9,7 +9,7 @@ class Admin::BudgetInvestmentsController < Admin::BaseController
   has_orders %w[oldest], only: [:show, :edit]
   has_filters %w[all], only: [:index, :toggle_selection]
 
-  before_action :load_budget, except: :audit
+  before_action :load_budget
   before_action :load_investment, only: [:show, :edit, :update, :toggle_selection]
   before_action :load_ballot, only: [:show, :index]
   before_action :parse_valuation_filters
@@ -60,11 +60,6 @@ class Admin::BudgetInvestmentsController < Admin::BaseController
     load_investments
   end
 
-  def audit
-    @audit = Audited::Audit.find(params[:id])
-    render "admin/audits/show"
-  end
-
   private
 
     def load_comments

app/models/audit.rb

@@ -0,0 +1,2 @@
+class Audit < Audited::Audit
+end

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

@@ -35,7 +35,7 @@
             </td>
             <td>
               <%= link_to t("shared.show"),
-                admin_audit_path(audit),
+                polymorphic_path([:admin, *resource_hierarchy_for(audit)]),
                 class: "button hollow primary" %>
             </td>
           </tr>

config/initializers/audited.rb

@@ -0,0 +1,3 @@
+Audited.config do |config|
+  config.audit_class = ::Audit
+end

config/initializers/routes_hierarchy.rb

@@ -13,6 +13,8 @@ module ActionDispatch::Routing::UrlFor
       [*resource_hierarchy_for(resource.milestoneable), resource]
     when "ProgressBar"
       [*resource_hierarchy_for(resource.progressable), resource]
+    when "Audit"
+      [*resource_hierarchy_for(resource.auditable), resource]
     when "Legislation::Annotation"
       [resource.draft_version.process, resource.draft_version, resource]
     when "Legislation::Proposal", "Legislation::Question", "Legislation::DraftVersion"

config/routes/admin.rb

@@ -63,6 +63,7 @@ namespace :admin do
     resources :budget_investments, only: [:index, :show, :edit, :update] do
       member { patch :toggle_selection }
 
+      resources :audits, only: :show, controller: "budget_investment_audits"
       resources :milestones, controller: "budget_investment_milestones"
       resources :progress_bars, except: :show, controller: "budget_investment_progress_bars"
     end
@@ -250,8 +251,6 @@ namespace :admin do
   get "download_settings/:resource", to: "download_settings#edit", as: "edit_download_settings"
   put "download_settings/:resource", to: "download_settings#update", as: "update_download_settings"
 
-  get "/admin/audits/:id", to: "budget_investments#audit", as: "audit"
-
   resources :local_census_records
   namespace :local_census_records do
     resources :imports, only: [:new, :create, :show]