return to previous page after DeviceUpdateView

devices/templates/devices/device_update.html

@@ -16,5 +16,11 @@
 </div>
 <br>
 <input type="submit" value="Save" class="btn btn-primary">
+<input type="hidden" id="previous_page" name="previous_page" value="/previous/page/url">
 </form>
+<script>
+    prev = document.getElementById("previous_page");
+    prev.value = document.referrer;
+</script>
+
 {% endblock %}

devices/views.py

@@ -99,7 +99,7 @@ class DeviceUpdateView(LoginRequiredMixin, UpdateView):
     template_name = 'devices/device_update.html'
 
     def get_success_url(self):
-        return reverse('device', args=(self.object.pk,))
+        return self.request.POST.get('previous_page')
 
 
 class DeviceDeleteView(LoginRequiredMixin, DeleteView):