Thanks for the tip - that saves me GAE debugging time - always welcomed. The Web2py guys take backward compatiblilty v. seriously so there must be a reasonable reason for this change. I've searched GoogleGroups but couldn't find past threads but the search isn't great and I turned nothing up.
On 12 Mar 2011, at 15:55, dlypka <[email protected]> wrote: > FYI:I found a *GOTCHA* issue when upgrading to 1.92.3 from 1.77.3 > Now you have to use .xml() on the URL() that you send into the GAE > API: > > upload_url = > blobstore.create_upload_url(URL(r=request,c='default',f='upbm2gig_gaehandler',args=None).xml()) > # This works > > upload_url = > blobstore.create_upload_url(URL(r=request,c='default',f='upbm2gig_gaehandler',args=None)) > # This crashes > > It crashes because between 1.77.3 and 1.92.3, a change was made in > html.py in the URL() class. > > Around html.py line 265, they added XML() around the return value. > > return XML(rewrite.url_out(r or _request, env, application, > controller, function, args, other, scheme, host, port)) > > In 1.77.3 it was formerly: > return rewrite.url_out(r or _request, env,....) > > So basically they have changed the signature of the URL() object. > Not very backward compatible, I would say... > > > On Mar 12, 12:48 am, Carl Roach <[email protected]> wrote: >> thanks howesc >> >> On 11 Mar 2011, at 23:29, howesc <[email protected]> wrote: >> >> >> >> >> >> >> >>> i use taskqueue extensively in my GAE apps. i have not wrapped it in a way >>> that it runs in non-gae environment. My usages of the taskqueue are for >>> things that i can't complete in a single 30 second execution time, so i >>> suppose i could put an 'if not GAE run all the processing in one request' >>> type statement. >> >>> my usual usage pattern (i have a few variations on this, but this is a >>> simple example): >> >>> def process_lots_of_rows(): >>> from google.appengine.api import taskqueue >> >>> last_timestamp = request.vars.last_timestamp or >>> datetime.datetime(2010,1,1) #reasonable default for my app >>> limit = 100 >>> #get records. use >= so i don't miss any, don't use ID as they are not >>> assigned in strictly increasing fashion >>> rows = db(db.record.created_time >= >>> last_timestamp).select(orderby=db.end_user.timestamp, >>> limitby=(0,limit)) >> >>> for r in rows: >>> r.update_record(bob='fred') >> >>> if len(rows) == limit: >>> #there are probably more to process >>> taskqueue.add(url=URL(r=request)) >> >>> return dict(message="did some work")
