Merge branch 'feature/versionining-extra-code-tasks' of github.com:adam-murray/djangocms-snippet into feature/versionining-extra-code-tasks

Author: adam-murray

djangocms_snippet/views.py

@@ -9,6 +9,10 @@ class SnippetPreviewView(TemplateView):
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
+        snippet_id = kwargs.get("snippet_id", None)
+        
+        if not snippet_id:
+            Http404("snippet_id must be provided.")
 
         try:
             snippet = Snippet._base_manager.get(pk=self.kwargs.get("snippet_id"))