Dear Web2py Team,
in your web documentation for combining rows it says:
"You can do union of the records in two sets of rows:
>>> rows3 = rows1 & rows2"
This worked with PyDal 17.08 where method __and__ of Rows Class in
objects.py was defined as:
def __and__(self, other):
....
records = self.records + other.records
....
In PyDal 17.11 method __and__ of Rows Class in objects.py is defined as:
def __and__(self, other):
....
records = []
other_records = list(other.records)
for record in self.records:
if record in other_records:
records.append(record)
other_records.remove(record)
This will return no combination of two recordsets but a logical AND of two
recordsets which is always an empty list if there are no duplicate records
in the two sets.
Is this intended or is just a 'not' missing to do a real UNION of the
recordsets, removing duplicates?
In this case it would also remain a problem when 'self.records' is shorter
than 'other_records', because you would loose records of 'other_records'
Please let me know if this will be changed, or if there will be another
recommended way of combining rows.
Many thanks in advance,
Michael
--
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- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
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