Is it possible to use detect_record_change while submitting an edit with
SQLFORM.grid. I'm talking the remotely possible but still possible case
where two users choose to edit the same record simultaneously. Just the
first one to submit her/his change should be successful. The second one
should fail because the record has changed between record retrieval to
populate edit form and the submission of changes. The Book gives code
snippet to use SQLFORM (not .grid) but I do not know how to put a flash
message where it says "# do something HERE FROM INSIDE A SQLFORM.grid?"
because this code is managed by SQLFORM.grid, not by me as the case the
Book shows.
def edit_dog():
dog = db.dog(request.args(0)) or redirect(URL('error'))
form=SQLFORM(db.dog,dog)
form.process(detect_record_change=True)
if form.record_changed:
# do something HERE FROM INSIDE A SQLFORM.grid?
elif form.accepted:
# do something else
else:
# do nothing
return dict(form=form)
--
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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