fix(sage_invoice): solve slug problem

sage_invoice/models/invoice.py

@@ -1,6 +1,7 @@
 from django.core.exceptions import ValidationError
 from django.db import models
 from django.utils.translation import gettext_lazy as _
+from django.urls import reverse
 from sage_tools.mixins.models import TitleSlugMixin
 
 from sage_invoice.helpers.choice import InvoiceStatus
@@ -101,6 +102,9 @@ def clean(self):
         if self.due_date < self.invoice_date:
             raise ValidationError(_("Due Date must be later than Invoice Date."))
 
+    def get_absolute_url(self):
+        return reverse('invoice_detail', kwargs={'slug': self.slug})
+
     class Meta:
         verbose_name = _("Invoice")
         verbose_name_plural = _("Invoices")

sage_invoice/urls.py

@@ -4,7 +4,7 @@
 
 urlpatterns = [
     path(
-        "invoice/<str:invoice_slug>/",
+        "invoice/<slug:slug>/",
         InvoiceDetailView.as_view(),
         name="invoice_detail",
     ),

sage_invoice/views/invoice.py

@@ -12,7 +12,7 @@ class InvoiceDetailView(TemplateView):
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
-        invoice_slug = self.kwargs.get("invoice_slug")
+        invoice_slug = self.kwargs.get("slug")
         invoice = Invoice.objects.filter(slug=invoice_slug)
         service = QuotationService()
         rendered_content = service.render_contax(invoice)