Authorize creating requests for users, and add links for pennings to zeus requests

app/controllers/transactions_controller.rb

@@ -19,6 +19,7 @@ class TransactionsController < ApplicationController
       end
     else
       request = Request.new @transaction.info
+      authorize!(:create, request)
       if request.save
         render json: request, status: :created
       else

app/models/user.rb

@@ -47,7 +47,7 @@ class User < ActiveRecord::Base
   end
 
   def self.zeus
-    find_or_create_by name: 'Zeus'
+    @@zeus ||= find_or_create_by name: 'Zeus'
   end
 
 end

app/models/user_ability.rb

@@ -6,7 +6,7 @@ class UserAbility
 
     can :manage, :all if user.penning?
     can :read,   user, id: user.id
-    can :manage, Request,      user_id: user.id
+    can :manage, Request,      creditor_id: user.id
     can :manage, Notification, user_id: user.id
     can :create, Transaction do |t|
       t.debtor == user && t.amount <= Rails.application.config.maximum_amount

app/views/application/_menu.html.haml

@@ -7,6 +7,10 @@
         - if current_user.penning
           %li.pure-menu-item
             =link_to "Zeus", User.zeus, class: "pure-menu-link"
+          %li.pure-menu-item
+            = link_to "Requests (#{User.zeus.incoming_requests.size})", user_requests_path(User.zeus), class: 'pure-menu-link'
+          %li.pure-menu-item
+            = link_to "Notifications (#{User.zeus.notifications.size})", user_notifications_path(User.zeus), class: 'pure-menu-link'
         %li.pure-menu-item
           = link_to "Requests (#{current_user.incoming_requests.size})", user_requests_path(current_user), class: 'pure-menu-link'
         %li.pure-menu-item