fixed codeclimate errors

app/controllers/admin/accounts_controller.rb

@@ -5,7 +5,7 @@ module Admin
     def index
       @q = Account.includes(:registrar).search(params[:q])
       @accounts = @q.result.page(params[:page])
-      @accounts = @accounts.per(params[:results_per_page]) if params[:results_per_page].to_i.positive?
+      @accounts = @accounts.per(params[:results_per_page]) if paginate?
 
       render_by_format('admin/accounts/index', 'accounts')
     end

app/models/account_activity.rb

@@ -5,10 +5,10 @@ class AccountActivity < ApplicationRecord
   belongs_to :invoice
   belongs_to :price, class_name: 'Billing::Price'
 
-  CREATE = 'create'
-  RENEW = 'renew'
-  ADD_CREDIT = 'add_credit'
-  UPDATE_CREDIT = 'update_credit'
+  CREATE = 'create'.freeze
+  RENEW = 'renew'.freeze
+  ADD_CREDIT = 'add_credit'.freeze
+  UPDATE_CREDIT = 'update_credit'.freeze
 
   after_create :update_balance
   def update_balance

app/views/admin/accounts/index.html.erb

@@ -18,7 +18,7 @@
                 </thead>
 
                 <tbody>
-                <%= render @accounts %>
+                    <%= render partial: 'account', collection: @accounts %>
                 </tbody>
             </table>
         </div>