Hi All,
I'm having a very very weird problem with some upload processing I'm
performing in web2py.
Firstly for context here is the code I am using:
Controller:
def validate_test():
form = SQLFORM.factory(
Field('csvfile', 'upload'), table_name="dataset_upload")
if form.validate():
logger.info("form validating")
candidate_file = request.vars.csvfile.file.read()
logger.info("{}".format(candidate_file))
elif form.process().accepted:
response.flash = 'form accepted'
elif form.errors:
response.flash = 'form has errors'
return dict(form=form)
And the View:
{{extend 'layout.html'}}
<div style="background: linear-gradient(240deg, lightgrey, whitesmoke)"
class="jumbotron">
<br><br>
{{=form}}
</div>
This is essentially as simple as it can be. The user should upload a csv
file, and I wish to run a suite of validators on that csv file before
returning to the user whether the validation was passed or where it failed
and on what.
Now this is the first step, just checking that the form csv is readable by
the server. And here is where I hit the problem:
Sometimes I get out (as expected) the contents of the csv file from logger.
info("{}".format(candidate_file))
Most of the time I just get out a blank string, even with the same input
file!
I feel like I'm going mad, doing the same thing twice and getting different
results. It smells to me like caching or race conditions but I just have no
idea what really is going on or why this might be happening.
Do you have any ideas?
Thanks!
--
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