add tax rate to example checkout session (#7)

* run linter

* add Linter action

* add tax rate to example checkout session

djstripe_example/urls.py

@@ -27,5 +27,5 @@
         name="checkout_redirect",
     ),
     path("checkout/create/", create_checkout_session, name="create_checkout_session"),
-    path("stripe/", include("djstripe.urls", namespace="djstripe")),
+    path("djstripe/", include("djstripe.urls", namespace="djstripe")),
 ]

djstripe_example/views.py

@@ -4,7 +4,7 @@
 from django.urls import reverse
 from django.views.generic import RedirectView, TemplateView
 from djstripe.enums import APIKeyType
-from djstripe.models import APIKey, Price, Product
+from djstripe.models import APIKey, Price, Product, TaxRate
 
 stripe.api_key = settings.STRIPE_TEST_SECRET_KEY
 
@@ -33,6 +33,22 @@ def get_or_create_starter_price():
         return Price.sync_from_stripe_data(stripe_price)
 
 
+def get_or_create_tax_rate():
+    try:
+        tax_rate = TaxRate.objects.get(metadata__djstripe_example="example_tax_rate")
+    except TaxRate.DoesNotExist:
+        print("Could not find a tax rate to use. Will create one for you.")
+        stripe_tax_rate = stripe.TaxRate.create(
+            display_name="VAT",
+            description="VAT",
+            inclusive=False,
+            percentage=20,
+            metadata={"djstripe_example": "example_tax_rate"},
+        )
+        tax_rate = TaxRate.sync_from_stripe_data(stripe_tax_rate)
+    return tax_rate
+
+
 class CheckoutRedirectView(TemplateView):
     template_name = "checkout_redirect.html"
 
@@ -68,12 +84,13 @@ class CreateCheckoutSession(RedirectView):
 
     def get_redirect_url(self, *args, **kwargs):
         price = get_or_create_starter_price()
+        tax_rate = get_or_create_tax_rate()
 
         checkout_session = stripe.checkout.Session.create(
             success_url="http://localhost:8000/checkout/success/?session_id={CHECKOUT_SESSION_ID}",
             cancel_url="http://localhost:8000/checkout/canceled/",
             mode="subscription",
-            line_items=[{"price": price.id, "quantity": 1}],
+            line_items=[{"price": price.id, "quantity": 1, "tax_rates": [tax_rate.id]}],
             payment_method_types=["card"],
         )