Użytkownik Ed Leafe napisał:
>
> Actually, isAnyChanged() should return False: new, unchanged records
> can be safely ignored when determining if the buffer is dirty.
>
> Where does isAnyChanged() come into play?
>
>
I'm so sorry, you are absolutely right.
But your code still doesn't work.
This is why (excerpt from dCursorMixin.cancel method):
{{{
if self._newRecords:
recs = list(recs)
delrecs_ids = self._newRecords.keys()
delrecs_idx = []
for rec_id in delrecs_ids:
# Remove any memento associated with the canceled
new record, and
# append to the list of indexes to delete.
row, rec = self._getRecordByPk(rec_id)
self._clearMemento(row)
delrecs_idx.append(self._records._index(rec))
delrecs_idx.sort(reverse=True)
for idx in delrecs_idx:
del recs[idx]
self._newRecords = {}
recs = dDataSet(recs)
if self.RowNumber >= self.RowCount:
self.RowNumber = self.RowCount - 1
for rec_pk, mem in self._mementos.items():
row, rec = self._getRecordByPk(rec_pk)
for fld, val in mem.items():
self._records[row][fld] = val
self._mementos = {}
else:
row = self.RowNumber
rec = self._records[row]
recKey = self.pkExpression(rec)
if recKey in self._newRecords:
# We simply need to remove the row, and clear the
memento and newrec flag.
self._clearMemento(row)
self._clearNewRecord(row)
recs = list(self._records)
del recs[recs.index(rec)]
self._records = dDataSet(recs)
if self.RowNumber >= self.RowCount:
self.RowNumber = self.RowCount - 1
return
}}}
When Paul's code is invoked, self._newRecords is empty list, so code
after "else" is executed.
Within your code, self._newRecords is filled, so condition is true, but
in this section,
content of "recs" dictionary is not propagated to self._records, like in
code below,
that is why dataset, de facto remains unchanged.
--
Regards
Jacek Kałucki
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