- feat: Sales estimates APIs.

- feat: Sales invoices APIs.
- feat: Sales receipts APIs.
- WIP: Sales payment receipts.
- WIP: Purchases bills.
- WIP: Purchases payments made.

server/src/models/SaleInvoice.js

@@ -0,0 +1,46 @@
+import { Model, mixin } from 'objection';
+import moment from 'moment';
+import TenantModel from '@/models/TenantModel';
+import CachableQueryBuilder from '@/lib/Cachable/CachableQueryBuilder';
+import CachableModel from '@/lib/Cachable/CachableModel';
+
+export default class SaleInvoice extends mixin(TenantModel, [CachableModel]) {
+  /**
+   * Table name
+   */
+  static get tableName() {
+    return 'sales_invoices';
+  }
+
+  /**
+   * Timestamps columns.
+   */
+  get timestamps() {
+    return ['created_at', 'updated_at'];
+  }
+
+  /**
+   * Extend query builder model.
+   */
+  static get QueryBuilder() {
+    return CachableQueryBuilder;
+  }
+
+  /**
+   * Relationship mapping.
+   */
+  static get relationMappings() {
+    const SaleInvoiceEntry = require('@/models/SaleInvoiceEntry');
+
+    return {
+      entries: {
+        relation: Model.HasManyRelation,
+        modelClass: this.relationBindKnex(SaleInvoiceEntry.default),
+        join: {
+          from: 'sales_invoices.id',
+          to: 'sales_invoices_entries.sale_invoice_id',
+        },
+      },
+    };
+  }
+}