Render GPG subkeys on index page

app/assets/stylesheets/pages/profile.scss

@@ -108,6 +108,15 @@
   }
 }
+.subkeys-list {
+  @include basic-list;
+
+  li {
+    padding: 3px 0;
+    border: none;
+  }
+}
+
 .key-list-item {
   .key-list-item-info {
     @media (min-width: $screen-sm-min) {

app/controllers/profiles/gpg_keys_controller.rb

@@ -2,7 +2,7 @@ class Profiles::GpgKeysController < Profiles::ApplicationController
   before_action :set_gpg_key, only: [:destroy, :revoke]
   def index
-    @gpg_keys = current_user.gpg_keys
+    @gpg_keys = current_user.gpg_keys.with_subkeys
     @gpg_key = GpgKey.new
   end

app/models/gpg_key.rb

@@ -12,6 +12,8 @@ class GpgKey < ActiveRecord::Base
   has_many :gpg_signatures
   has_many :subkeys, class_name: 'GpgKeySubkey'
+  scope :with_subkeys, -> { includes(:subkeys) }
+
   validates :user, presence: true
   validates :key,

app/views/profiles/gpg_keys/_key.html.haml

@@ -7,6 +7,13 @@
     .description
       %code= key.fingerprint
+    - if key.subkeys.present?
+      .subkeys
+        %span.bold Subkeys:
+        %ul.subkeys-list
+          - key.subkeys.each do |subkey|
+            %li
+              %code= subkey.fingerprint
   .pull-right
     %span.key-created-at
       created #{time_ago_with_tooltip(key.created_at)}