but I tried in a shell and it doesn't raise an exception if the record exists (and it gets correctly deleted too)
On Wednesday, November 7, 2012 1:59:48 PM UTC+1, Cliff Kachinske wrote: > > The record was there. > > That's the problem. The shortcut was erroneously reporting that it was > gone. > > On Tuesday, November 6, 2012 2:40:38 PM UTC-5, Niphlod wrote: >> >> del db.sometable[something] requires that the id == something exists. >> db(db.sometable.id == something).delete() instead returns the number of >> records deleted if there was any, otherwise it simply deletes nothing. >> >> On Tuesday, November 6, 2012 8:14:33 PM UTC+1, Cliff Kachinske wrote: >>> >>> This code works. Note the commented out line. >>> >>> for v in form.vars: >>> if v[:7] == 'remove_' and form.vars[v] == 'on': >>> # del db.class_users[v[7:]] >>> db(db.class_users.id==v[7:]).delete() >>> >>> >>> This code, which should be equivalent, raises the exception shown below. >>> >>> for v in form.vars: >>> if v[:7] == 'remove_' and form.vars[v] == 'on': >>> del db.class_users[v[7:]] >>> >>> >>> Traceback (most recent call last): >>> File "/home/cjk/w2p09/web2py/gluon/restricted.py", line 209, in restricted >>> exec ccode in environment >>> File >>> "/home/cjk/w2p09/web2py/applications/Training/controllers/class_users.py" >>> <http://localhost:8000/admin/default/edit/Training/controllers/class_users.py>, >>> line 371, in <module> >>> File "/home/cjk/w2p09/web2py/gluon/globals.py", line 186, in <lambda> >>> self._caller = lambda f: f() >>> File "/home/cjk/w2p09/web2py/gluon/tools.py", line 2809, in f >>> return action(*a, **b) >>> File >>> "/home/cjk/w2p09/web2py/applications/Training/controllers/class_users.py" >>> <http://localhost:8000/admin/default/edit/Training/controllers/class_users.py>, >>> line 165, in list_ >>> if form.process(onvalidation=do_updates).accepted: >>> File "/home/cjk/w2p09/web2py/gluon/html.py", line 2108, in process >>> self.validate(**kwargs) >>> File "/home/cjk/w2p09/web2py/gluon/html.py", line 2055, in validate >>> if self.accepts(**kwargs): >>> File "/home/cjk/w2p09/web2py/gluon/html.py", line 1969, in accepts >>> onvalidation(self) >>> File >>> "/home/cjk/w2p09/web2py/applications/Training/controllers/class_users.py" >>> <http://localhost:8000/admin/default/edit/Training/controllers/class_users.py>, >>> line 134, in do_updates >>> del db.class_users[v[7:]] >>> File "/home/cjk/w2p09/web2py/gluon/dal.py", line 7691, in __delitem__ >>> raise SyntaxError, 'No such record: %s' % key >>> SyntaxError: No such record: 7 >>> >>> --
