first commit

core/views.py

@@ -0,0 +1,43 @@
+from django.shortcuts import redirect
+from django.urls import reverse
+
+class SlugRedirectMixin:
+    """
+    Mixin that handles redirects for old slugs.
+    Requires the model to inherit from SluggedModel.
+    """
+    def get(self, request, *args, **kwargs):
+        # Get the object using current or historical slug
+        try:
+            self.object = self.get_object()
+            # Check if we used an old slug
+            current_slug = kwargs.get(self.slug_url_kwarg)
+            if current_slug != self.object.slug:
+                # Get the URL pattern name from the view
+                url_pattern = self.get_redirect_url_pattern()
+                # Build kwargs for reverse()
+                reverse_kwargs = self.get_redirect_url_kwargs()
+                # Redirect to the current slug URL
+                return redirect(
+                    reverse(url_pattern, kwargs=reverse_kwargs),
+                    permanent=True
+                )
+            return super().get(request, *args, **kwargs)
+        except self.model.DoesNotExist:
+            return super().get(request, *args, **kwargs)
+
+    def get_redirect_url_pattern(self):
+        """
+        Get the URL pattern name for redirects.
+        Should be overridden by subclasses.
+        """
+        raise NotImplementedError(
+            "Subclasses must implement get_redirect_url_pattern()"
+        )
+
+    def get_redirect_url_kwargs(self):
+        """
+        Get the kwargs for reverse() when redirecting.
+        Should be overridden by subclasses if they need custom kwargs.
+        """
+        return {self.slug_url_kwarg: self.object.slug}