From 54b3139e047d20c500d0a1335b4512b120631161 Mon Sep 17 00:00:00 2001
From: Daian Gan <67585810+daiangan@users.noreply.github.com>
Date: Mon, 15 Aug 2022 14:51:57 -0400
Subject: [PATCH] Use .get() to find correct kwargs field and avoid KeyError

In the "Creating custom mixins" documentation, the code example recommends using
```python
if self.kwargs[field]
```
However, if the correct field is not present in kwargs, a KeyError arises.
A more secure option is tu use .get() to validate that the field is contained in the kwargs dictionary:
```python
if self.kwargs.get(field)
```
---
 docs/api-guide/generic-views.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/api-guide/generic-views.md b/docs/api-guide/generic-views.md
index fbafec93a..3dec17c1a 100644
--- a/docs/api-guide/generic-views.md
+++ b/docs/api-guide/generic-views.md
@@ -335,7 +335,7 @@ For example, if you need to lookup objects based on multiple fields in the URL c
             queryset = self.filter_queryset(queryset)  # Apply any filter backends
             filter = {}
             for field in self.lookup_fields:
-                if self.kwargs[field]: # Ignore empty fields.
+                if self.kwargs.get(field): # Ignore empty fields.
                     filter[field] = self.kwargs[field]
             obj = get_object_or_404(queryset, **filter)  # Lookup the object
             self.check_object_permissions(self.request, obj)
@@ -395,4 +395,4 @@ The following third party packages provide additional generic view implementatio
 [UpdateModelMixin]: #updatemodelmixin
 [DestroyModelMixin]: #destroymodelmixin
 [django-rest-multiple-models]: https://github.com/MattBroach/DjangoRestMultipleModels
-[django-docs-select-related]: https://docs.djangoproject.com/en/3.1/ref/models/querysets/#django.db.models.query.QuerySet.select_related
\ No newline at end of file
+[django-docs-select-related]: https://docs.djangoproject.com/en/3.1/ref/models/querysets/#django.db.models.query.QuerySet.select_related