Change Invoice::Item price scale to 3 places

app/models/invoice.rb

@@ -82,7 +82,7 @@ class Invoice < ApplicationRecord
   end
 
   def vat_amount
-    subtotal * vat_rate / 100
+    (subtotal * vat_rate / 100)
   end
 
   def total
@@ -118,9 +118,8 @@ class Invoice < ApplicationRecord
 
     vat = VatRateCalculator.new(registrar: registrar_user).calculate
     wo_vat = (transaction.sum / (1 + (vat / 100)))
-
     registrar_user.issue_prepayment_invoice(wo_vat, 'Direct top-up via bank transfer',
-                                            payable: false, total: transaction.sum)
+                                            payable: false)
   end
 
   private
@@ -130,6 +129,6 @@ class Invoice < ApplicationRecord
   end
 
   def calculate_total
-    self.total = subtotal + vat_amount
+    self.total = (subtotal + vat_amount).round(3)
   end
 end

app/models/invoice_item.rb

@@ -5,7 +5,7 @@ class InvoiceItem < ApplicationRecord
   delegate :vat_rate, to: :invoice
 
   def item_sum_without_vat
-    (price * quantity).round(2)
+    (price * quantity).round(3)
   end
   alias_method :subtotal, :item_sum_without_vat
 
@@ -14,6 +14,6 @@ class InvoiceItem < ApplicationRecord
   end
 
   def total
-    subtotal + vat_amount
+    (subtotal + vat_amount)
   end
 end

app/models/registrar.rb

@@ -54,7 +54,7 @@ class Registrar < ApplicationRecord
     end
   end
 
-  def issue_prepayment_invoice(amount, description = nil, payable: true, total: nil)
+  def issue_prepayment_invoice(amount, description = nil, payable: true)
     vat_rate = ::Invoice::VatRateCalculator.new(registrar: self).calculate
 
     invoice = invoices.create!(
@@ -90,7 +90,6 @@ class Registrar < ApplicationRecord
       buyer_email: email,
       reference_no: reference_no,
       vat_rate: vat_rate,
-      total: total,
       items_attributes: [
         {
           description: 'prepayment',

db/migrate/20200910085157_change_invoice_item_price_scale_to_three_places.rb

@@ -0,0 +1,5 @@
+class ChangeInvoiceItemPriceScaleToThreePlaces < ActiveRecord::Migration[6.0]
+  def change
+    change_column :invoice_items, :price, :decimal, precision: 10, scale: 3
+  end
+end

db/structure.sql

@@ -1,7 +1,3 @@
----
---- PostgreSQL database dump
----
-
 SET statement_timeout = 0;
 SET lock_timeout = 0;
 SET client_encoding = 'UTF8';
@@ -371,7 +367,6 @@ CREATE TABLE public.bank_statements (
     id integer NOT NULL,
     bank_code character varying,
     iban character varying,
-    import_file_path character varying,
     queried_at timestamp without time zone,
     created_at timestamp without time zone,
     updated_at timestamp without time zone,
@@ -963,7 +958,7 @@ CREATE TABLE public.invoice_items (
     description character varying NOT NULL,
     unit character varying NOT NULL,
     quantity integer NOT NULL,
-    price numeric(10,2) NOT NULL,
+    price numeric(10,3) NOT NULL,
     created_at timestamp without time zone,
     updated_at timestamp without time zone,
     creator_str character varying,
@@ -4850,4 +4845,8 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20200807110611'),
 ('20200811074839'),
 ('20200812090409'),
-('20200812125810');
+('20200812125810'),
+('20200908131554'),
+('20200910085157');
+
+