def editPost(self, postid, username, password, struct, publish):
"""See IMetaWeblogAPI.
"""
struct = CaselessDict(struct)
entry = IUIDManager(self.context).getByUID(postid)
entry = IWeblogEntry(entry)
body = struct.get('description')
excerpt, text = self.extractExcerptFromBody(body)
title = struct.get('title')
topics = struct.get('categories')
entry.edit(title, excerpt, text, topics)
if publish:
IWorkflowedWeblogEntry(entry).publish()
return True
