sorted() method of MultilinkHTMLProperty is broken?

Dear Users,

I am using Roundup 2.1.0, and I cannot get the sorted() method of
MultilinkHTMLProperty to work in the web interface.

In schema.py, the class "issue" has the following definition:

issue = IssueClass(db, "issue",
...
                   documents=Multilink("doc", rev_multilink="owner"),
...
)

The multilinked "doc" class has the following definition:

doc = FileClass(db, "doc",
...
                d_feltoltes=Date(),    # this is d_upload in Hungarian
...
)

When I try to list the documents of an issue, according to the Roundup
documentation, I am trying to do this in issue.item.html:

<tr tal:repeat="i python:context.documents.sorted('d_feltoltes', reverse=True)">

And this leads to "KeyError: 'd_feltoltes'", induced by the command 

prop = self._db.getclass(self._classname).getprops()[property]

in cgi/templating.py/MultilinkHTMLProperty/sorted().

After replacing self._classname to self._prop.classname in that codeline,
it seems to work as expected.

Am I completely oversee something, or this sorted() method is broken,
but nobody uses it?

As I see, this is not patched in Roundup 2.2.0 either.

Regards,
Gábor

PS. I have not fixed the previous mySQL issue yet, I will report the result here.


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