adds document counter to signature sheet

app/views/admin/signature_sheets/show.html.erb

@@ -8,6 +8,11 @@
   <strong><%= @signature_sheet.author.name %></strong>
 </div>
 
+<h3 id="document_count" class="block">
+  <%= t("admin.signature_sheets.show.document_count") %>
+  <%= @signature_sheet.signatures.count %>
+</h3>
+
 <div class="callout margin-top">
   <p><strong><%= t("admin.signature_sheets.show.documents") %></strong></p>
   <%= simple_format @signature_sheet.document_numbers %>

config/locales/admin.en.yml

@@ -312,6 +312,7 @@ en:
         created_at: Created
         author: Author
         documents: Documents
+        document_count: "Number of documents:"
         verified:
           one: "There is %{count} valid signature"
           other: "There are %{count} valid signatures"

config/locales/admin.es.yml

@@ -310,6 +310,7 @@ es:
         created_at: Creado
         author: Autor
         documents: Documentos
+        document_count: "Número de documentos:"
         verified:
           one: "Hay %{count} firma válida"
           other: "Hay %{count} firmas válidas"

spec/features/admin/signature_sheets_spec.rb

@@ -59,6 +59,10 @@ feature 'Signature sheets' do
     expect(page).to have_content signature_sheet.created_at.strftime("%d %b %H:%M")
     expect(page).to have_content user.name
 
+    within("#document_count") do
+      expect(page).to have_content 3
+    end
+
     within("#verified_signatures") do
       expect(page).to have_content 1
     end