switch to using a filefield to save the invoice pdf

shop/management/commands/invoice-worker.py

@@ -43,8 +43,8 @@ class Command(BaseCommand):
                     self.stdout.write('ERROR: Unable to generate PDF file for invoice #%s' % invoice.pk)
                     continue
 
-                # update invoice object
-                invoice.pdf_generated=True
+                # update invoice object with the file
+                invoice.pdf.save(invoice.filename, File(pdffile))
                 invoice.save()
 
             ### check if we need to send out any invoices

shop/models.py

@@ -255,7 +255,7 @@ class EpayPayment(CreatedUpdatedModel, UUIDModel):
 
 class Invoice(CreatedUpdatedModel):
     order = models.OneToOneField('shop.Order')
-    pdf_generated = models.BooleanField(default=False)
+    pdf = models.FileField(null=True, blank=True)
     sent_to_customer = models.BooleanField(default=False)
 
     def __str__(self):