Ported:

Change (Reprint bill)

Chore:
  Refactored save voucher so that the save function can be reused in change voucher route

Fix:
  Show voucher sent modifiers in a wrong format
  Inventory schema used rate instead of price

bookie/src/app/sales/bills/voucher.service.ts

@@ -69,11 +69,24 @@ export class VoucherService {
       );
   }
 
+  change(voucher: Bill, printType: PrintType, guest_book_id: string, updateTable: boolean): Observable<boolean> {
+  const options = {params: new HttpParams().set('u', updateTable.toString())};
+  if (guest_book_id !== null) {
+    options.params = options.params.set('g', guest_book_id);
+  }
+    return <Observable<boolean>>this.http.put<boolean>(`${url}/change/${voucher.id}`, voucher, options)
+      .pipe(
+        catchError(this.log.handleError(serviceName, 'change'))
+      );
+  }
+
   saveOrUpdate(voucher: Bill, printType: PrintType, guest_book_id: string, updateTable: boolean): Observable<boolean> {
     if (!voucher.id) {
       return this.save(voucher, printType, guest_book_id, updateTable);
-    } else {
+    } else if (voucher.voucherType === PrintType.Kot) {
       return this.update(voucher, printType, guest_book_id, updateTable);
+    } else {
+      return this.change(voucher, printType, guest_book_id, updateTable);
     }
   }