feat: Re-compute the given items cost job.

feat: Optimize the architecture.

server/src/database/knex.js

@@ -4,9 +4,9 @@ import knexfile from '@/../config/systemKnexfile';
 
 const config = knexfile[process.env.NODE_ENV];
 
-const knex = Knex({
-  ...config,
-  ...knexSnakeCaseMappers({ upperCase: true }),
-});
-
-export default knex;
+export default () => {
+  return Knex({
+    ...config,
+    ...knexSnakeCaseMappers({ upperCase: true }),
+  });
+};

server/src/database/migrations/20200722164251_create_inventory_transactions_table.js

@@ -6,9 +6,9 @@ exports.up = function(knex) {
 
     table.string('direction');
 
-    table.integer('item_id');
-    table.integer('quantity');
-    table.decimal('rate', 13, 3);
+    table.integer('item_id').unsigned();
+    table.integer('quantity').unsigned();
+    table.decimal('rate', 13, 3).unsigned();
  
     table.string('transaction_type');
     table.integer('transaction_id');

server/src/database/migrations/20200810121807_create_inventory_cost_lot_tracker_table.js

@@ -6,9 +6,11 @@ exports.up = function(knex) {
 
     table.string('direction');
 
-    table.integer('item_id');
+    table.integer('item_id').unsigned();
+    table.integer('quantity').unsigned();
     table.decimal('rate', 13, 3);
     table.integer('remaining');
+    table.string('lot_number');
 
     table.string('transaction_type');
     table.integer('transaction_id');

server/src/database/objection.js

@@ -1,7 +1,8 @@
 import { Model } from 'objection';
-import knex from '@/database/knex';
 
 // Bind all Models to a knex instance. If you only have one database in
 // your server this is all you have to do. For multi database systems, see
 // the Model.bindKnex() method.
-Model.knex(knex);
+export default ({ knex }) => {
+  Model.knex(knex);
+};

server/src/database/seeds/seed_resources.js

@@ -7,7 +7,6 @@ exports.seed = (knex) => {
       return knex('resources').insert([
         { id: 1, name: 'accounts' },
         { id: 8, name: 'accounts_types' },
-
         { id: 2, name: 'items' },
         { id: 3, name: 'expenses' },
         { id: 4, name: 'manual_journals' },