Commit d076553e authored by Sebastien Robin's avatar Sebastien Robin

override pt_render to allow empty strings

parent c821eb3b
......@@ -11,6 +11,7 @@ from AccessControl import getSecurityManager
from App.class_init import default__class_init__ as InitializeClass
from App.Common import package_home
from Products.PageTemplates.ZopePageTemplate import ZopePageTemplate
from Products.PageTemplates.PageTemplate import PageTemplate
from Products.PageTemplates.PageTemplateFile import PageTemplateFile
from BaseMailTemplate import BaseMailTemplate
......@@ -93,6 +94,12 @@ class MailTemplate(BaseMailTemplate,ZopePageTemplate):
def pt_render(self, source=False, extra_context={}):
# Override to support empty strings
result = PageTemplate.pt_render(self, source, extra_context) or u''
assert isinstance(result, unicode)
return result
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