djommon: add a UserInTracebackMiddleware

This middleware class add information on the currently logged in user to
request.META effectively logging them in the traceback.

entrouvert/djommon/middleware.py

@@ -12,3 +12,43 @@ class VersionMiddleware:
             return HttpResponse(json.dumps(packages_version),
                     content_type='application/json')
         return None
+
+# copied from http://stackoverflow.com/questions/9294043/include-django-logged-user-in-django-traceback-error
+
+class UserInTracebackMiddleware(object):
+"""
+    Adds user details to request context during request processing, so that they
+    show up in the error emails. Add to settings.MIDDLEWARE_CLASSES and keep it
+    outermost(i.e. on top if possible). This allows it to catch exceptions in
+    other middlewares as well.
+"""
+
+    def process_exception(self, request, exception):
+        """
+        Process the request to add some variables to it.
+        """
+
+        # Add other details about the user to the META CGI variables.
+        try:
+            if not request.user.is_authenticated():
+                return
+            if request.user.is_anonymous():
+                request.META['AUTH_NAME'] = "Anonymous User"
+                request.META['AUTH_USER'] = "Anonymous User"
+                request.META['AUTH_USER_EMAIL'] = ""
+                request.META['AUTH_USER_ID'] = 0
+                request.META['AUTH_USER_IS_ACTIVE'] = False
+                request.META['AUTH_USER_IS_SUPERUSER'] = False
+                request.META['AUTH_USER_IS_STAFF'] = False
+                request.META['AUTH_USER_LAST_LOGIN'] = ""
+            else:
+                request.META['AUTH_USER_ID'] = str(request.user.id)
+                request.META['AUTH_NAME'] = str(request.user.first_name) + " " + str(request.user.last_name)
+                request.META['AUTH_USER'] = str(request.user.username)
+                request.META['AUTH_USER_EMAIL'] = str(request.user.email)
+                request.META['AUTH_USER_IS_ACTIVE'] = str(request.user.is_active)
+                request.META['AUTH_USER_IS_SUPERUSER'] = str(request.user.is_superuser)
+                request.META['AUTH_USER_IS_STAFF'] = str(request.user.is_staff)
+                request.META['AUTH_USER_LAST_LOGIN'] = str(request.user.last_login)
+        except:
+            pass