Wow! I've rediscovered a bug from 2001! And they say I'm living in the past...
Well at least I'm not alone back there. Massimo is back there with me! https://groups.google.com/d/msg/web2py/XF0LbfNl9ag/j2DbOtR1mf0J On Thursday, May 30, 2013 9:51:05 AM UTC-7, Derek wrote: > > You ran into a bug (imho) that has existed in python since 2001 (at least). > > http://bugs.python.org/issue444913 > > Now it's preserved for backwards compatibility. > > > > On Thursday, May 30, 2013 2:06:20 AM UTC-7, Joe Barnhart wrote: >> >> I've had the most awful time trying to get the actual filename of an >> uploaded file to appear in my database. I've gone over and over the >> advice, but it has never worked for me. I was beginning to suspect evil >> spirits in my code when I ran across the problem... >> >> cgi.FieldStorage does NOT behave like other Python variables in that it >> doesn't resolve to True if the object contains data. It resolves to False >> ALL THE TIME, whether it has data or not. >> >> I was dutifully following advice and had code that looked like: >> >> >> if request.vars.upload: >> form.vars.filename = request.vars.upload.filename >> >> >> But guess what? The code inside "if" NEVER RUNS. >> >> For now I've worked around it by using the method "has_key()" on the >> cgi.FieldStorage object: >> >> >> if request.vars.has_key('upload'): >> form.vars.filename = request.vars.upload.filename >> >> >> >> And this works. >> >> The "proper" fix is probably to modify cgi.FieldStorage so that is >> resolves to True if it has data and False if empty, like all other Python >> objects. But I thought I'd pass along my epiphany in case others are >> wondering if their code is inhabited by evil spirits. > > -- --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
