Nil safe humanizing

app/views/users/show.html.erb

@@ -63,7 +63,7 @@
 
       <%= summary_list.row do |row|
             row.key { "Role" }
-            row.value { @user.role.humanize }
+            row.value { @user.role&.humanize }
             if can_edit_roles?(@user, current_user)
               row.action(
                 visually_hidden_text: "role",

spec/requests/users_controller_spec.rb

@@ -164,6 +164,19 @@ RSpec.describe UsersController, type: :request do
         end
       end
 
+      context "when the user does not have a role because they are a data protection officer only" do
+        let(:user) { FactoryBot.create(:user, role: nil) }
+
+        before do
+          sign_in user
+          get "/users/#{user.id}", headers:, params: {}
+        end
+
+        it "shows their details" do
+          expect(response).to have_http_status(:ok)
+        end
+      end
+
       context "when the current user does not match the user ID" do
         before do
           sign_in user