I'm encountering an error when uploading a CSV file when dates are involved
in a computed field. Using sqlite, web2py version:
2.8.2-stable+timestamp.2013.11.28.13.54.07 (also tested on
2.9.5-stable+timestamp.2014.03.16.02.35.39).
E.g., consider the following table definition in a model:
db.define_table('POC2',
Field('poc_date', 'date', required=True),
Field('ten_days_before_poc_date', 'date', compute = lambda
r: r['poc_date'] - datetime.timedelta(10))
)
Now, use appadmin to manage the POC2 table and insert a new record. This
works as expected.
Now, try uploading the following CSV file and importing it into the table:
POC2.id,POC2.poc_date
1,2014-05-30
The following error appears:
unable to parse csv file
unsupported operand type(s) for -: 'str' and 'datetime.timedelta'
It appears that r['poc_date'] is passed to the lambda as a string when
uploading via CSV, but as a date when going through appadmin. Is this the
designed behavior, and is it documented anywhere?
I can always test the datatype of r['poc_date'] and convert it to a
datetime explicitly, but I don't want to make my code any messier than
needed if I'm missing something regarding computed fields and CSV imports.
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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