I do not think we ever said URL returns a string. We did this change in a way that did not break any example in the book. I will look more carefully at your example and treat it as a web2py bug. I am sure we can make it work. Can you post the complete traceback?
Massimo On Mar 12, 11:12 am, Carl Roach <[email protected]> wrote: > 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_gaehandle > > r',args=None).xml()) > > # This works > > > upload_url = > > blobstore.create_upload_url(URL(r=request,c='default',f='upbm2gig_gaehandle > > r',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")

