Make Budget::Investment::Milestone class Documentable.

Add fields to the milestone form so that the admin can attach 0, 1 or multiple documents.
Add column to milestone list with a link to documents (if there is any).
Make documents accessible from the milestone view for users.

app/assets/stylesheets/participation.scss

@@ -334,7 +334,8 @@
 .draft-panels,
 .debate-questions,
 .communities-show,
-.topic-show {
+.topic-show,
+.milestone-content {
 
   p {
     word-wrap: break-word;

app/controllers/admin/budget_investment_milestones_controller.rb

@@ -41,7 +41,8 @@ class Admin::BudgetInvestmentMilestonesController < Admin::BaseController
   def milestone_params
     params.require(:budget_investment_milestone)
           .permit(:title, :description, :budget_investment_id,
-                  image_attributes: [:id, :title, :attachment, :cached_attachment, :user_id, :_destroy])
+                  image_attributes: [:id, :title, :attachment, :cached_attachment, :user_id, :_destroy],
+                  documents_attributes: [:id, :title, :attachment, :cached_attachment, :user_id, :_destroy])
   end
 
   def load_budget_investment

app/models/budget/investment/milestone.rb

@@ -2,6 +2,10 @@ class Budget
   class Investment
     class Milestone < ActiveRecord::Base
       include Imageable
+      include Documentable
+      documentable max_documents_allowed: 3,
+                   max_file_size: 3.megabytes,
+                   accepted_content_types: [ "application/pdf" ]
 
       belongs_to :investment
 

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

@@ -4,5 +4,10 @@
   <%= f.text_area :description, rows: 5 %>
   <%= render 'images/admin_image', imageable: @milestone, f: f %>
 
+  <hr>
+  <div class="documents">
+    <%= render 'documents/nested_documents', documentable: @milestone, f: f %>
+  </div>
+
   <%= f.submit nil, class: "button success" %>
 <% end %>

app/views/admin/budget_investments/_milestones.html.erb

@@ -6,6 +6,7 @@
         <th><%= t("admin.milestones.index.table_title") %></th>
         <th><%= t("admin.milestones.index.table_description") %></th>
         <th><%= t("admin.milestones.index.image") %></th>
+        <th><%= t("admin.milestones.index.documents") %></th>
         <th><%= t("admin.milestones.index.table_actions") %></th>
       </tr>
     </thead>
@@ -24,6 +25,16 @@
           <td class="small">
             <%= link_to t("admin.milestones.index.show_image"), milestone.image_url(:large), target: :_blank if milestone.image.present? %>
           </td>
+          <td class="small">
+            <% if milestone.documents.present? %>
+              <% milestone.documents.each do |document| %>
+                <%= link_to document.title,
+                              document.attachment.url,
+                              target: "_blank",
+                              rel: "nofollow" %><br>
+              <% end %>
+            <% end %>
+          </td>
           <td>
             <%= link_to t("admin.milestones.index.delete"), admin_budget_budget_investment_budget_investment_milestone_path(@investment.budget, @investment, milestone),
                         method: :delete,

app/views/budgets/investments/_milestones.html.erb

@@ -17,6 +17,20 @@
                 </span>
                 <%= image_tag(milestone.image_url(:large), {alt: milestone.image.title, class: "margin", id: "image_#{milestone.id}"}) if milestone.image.present? %>
                 <p><%= milestone.description %></p>
+                <% if milestone.documents.present? %>
+                  <div class="document-link text-center">
+                    <p>
+                      <span class="icon-document"></span>&nbsp;
+                      <strong><%= t('proposals.show.title_external_url') %></strong>
+                    </p>
+                    <% milestone.documents.each do |document| %>
+                      <%= link_to document.title,
+                              document.attachment.url,
+                              target: "_blank",
+                              rel: "nofollow" %><br>
+                    <% end %>
+                  </div>
+                <% end %>
               </div>
             </li>
           <% end %>

config/locales/en/admin.yml

@@ -198,6 +198,7 @@ en:
         no_milestones: "Don't have defined milestones"
         image: "Image"
         show_image: "Show image"
+        documents: "Documents"
       new:
         creating: Create milestone
       edit:

config/locales/es/admin.yml

@@ -198,6 +198,7 @@ es:
         no_milestones: "No hay hitos definidos"
         image: "Imagen"
         show_image: "Ver imagen"
+        documents: "Documentos"
       new:
         creating: Crear hito
       edit: