On Aug 13, 3:17 pm, Michael Bayer <mike...@zzzcomputing.com> wrote: > On Aug 13, 2010, at 10:01 AM, Dan wrote: > > > I have created a custom type in order to store denormalized PKs in a > > TEXT field. The idea is that the text is converted back and forth from > > a set of integers: > > >http://paste.pocoo.org/show/249784/ > > this is unrelated, but the code is incorrect there, should be > > def process(value): > if value is not None: > items = [str(item).strip() for item in value] > value = self.separator.join(item for item in items if item) > > otherwise, you must implement copy_value() on your type. Here, the value > isn't being copied so there's nothing to compare to. >
Yes, sorry for the typo. Realized myself once I'd posted. > Usually you're supposed to mixin MutableType which will raise notimplemented > for copy_value(). I guess still more docs are needed since you were misled > by the is_mutable() method. > I've tried the same thing with the MutableType mixin with the same result, i.e: class DenormalizedText(types.TypeDecorator, types.MutableType): -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalch...@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
