Track account balance dynamically in AccountActivity

app/models/account_activity.rb

@@ -13,6 +13,9 @@ class AccountActivity < ApplicationRecord
   def update_balance
     account.balance += sum
     account.save
+
+    self.new_balance = account.balance
+    save
   end
 
   class << self

app/views/registrar/account_activities/index.html.erb

@@ -14,7 +14,7 @@
             <table class="table table-hover table-condensed">
                 <thead>
                 <tr>
-                    <th class="col-xs-5">
+                    <th class="col-xs-3">
                         <%= sort_link(@q, 'description') %>
                     </th>
                     <th class="col-xs-2">
@@ -26,6 +26,9 @@
                     <th class="col-xs-2">
                         <%= sort_link(@q, 'sum') %>
                     </th>
+                    <th class="col-xs-2">
+                        <%= sort_link(@q, 'new_balance', 'New balance') %>
+                    </th>
                 </tr>
                 </thead>
                 <tbody>
@@ -45,6 +48,9 @@
                         <td class="<%= c %>">
                             <%= s %>
                         </td>
+                        <td>
+                            <%= x.new_balance.present? ? "#{currency(x.new_balance)} EUR" : 'N/A' %>
+                        </td>
                     </tr>
                 <% end %>
                 </tbody>

db/migrate/20210215101019_add_new_balance_to_account_activity.rb

@@ -0,0 +1,5 @@
+class AddNewBalanceToAccountActivity < ActiveRecord::Migration[6.0]
+  def change
+    add_column :account_activities, :new_balance, :decimal, precision: 10, scale: 2, null: true
+  end
+end

db/structure.sql

@@ -226,7 +226,8 @@ CREATE TABLE public.account_activities (
     creator_str character varying,
     updator_str character varying,
     activity_type character varying,
-    price_id integer
+    price_id integer,
+    new_balance numeric(10,2)
 );
 
 
@@ -4959,6 +4960,7 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20200908131554'),
 ('20200910085157'),
 ('20200910102028'),
-('20200916125326');
+('20200916125326'),
+('20210215101019');