Catch render() call, to allow overriding. (#530)

* Added overridable render method in admin.py

* Added missing self argument.

* Make indirect_render used in both cases.

* Rename indirect_render to render_history_view

* PEP8

* Update render_history_view signature to unfold args.

Co-Authored-By: Ross Mechanic <[email protected]>

* Fix argument forwarding

Author: Skeen

simple_history/admin.py

@@ -93,7 +93,9 @@ def history_view(self, request, object_id, extra_context=None):
         context.update(self.admin_site.each_context(request))
         context.update(extra_context or {})
         extra_kwargs = {}
-        return render(request, self.object_history_template, context, **extra_kwargs)
+        return self.render_history_view(
+            request, self.object_history_template, context, **extra_kwargs
+        )
 
     def response_change(self, request, obj):
         if "_change_history" in request.POST and SIMPLE_HISTORY_EDIT:
@@ -196,10 +198,14 @@ def history_form_view(self, request, object_id, version_id, extra_context=None):
         context.update(self.admin_site.each_context(request))
         context.update(extra_context or {})
         extra_kwargs = {}
-        return render(
+        return self.render_history_view(
             request, self.object_history_form_template, context, **extra_kwargs
         )
 
+    def render_history_view(self, request, template, context, **kwargs):
+        """Catch call to render, to allow overriding."""
+        return render(request, template, context, **kwargs)
+
     def save_model(self, request, obj, form, change):
         """Set special model attribute to user for reference after save"""
         obj._history_user = request.user