Hi Alberto,
Thanks for such an overwhelming response and support!
But, with my terrible ignorance on python and TG internals, I could not
succeed trying your example. Got this error:
Traceback (most recent call last):
File "./start-ierr.py", line 26, in ?
from ierr.controllers import Root
File "/Data/LearnTG/ierr/ierr/controllers.py", line 14, in ?
class Root(controllers.RootController):
File "/Data/LearnTG/ierr/ierr/controllers.py", line 30, in Root
@errorhandling.dispatch_error.when("isinstance(tg_exceptions,
IntegrityError)")
File
"/usr/lib/python2.4/site-packages/TurboGears-0.9a7-py2.4.egg/turbogears/genericfunctions.py",
line 20, in when
return self._decorate(cond, "primary%d" % order)
File
"/usr/lib/python2.4/site-packages/RuleDispatch-0.5a0.dev_r2115-py2.4-linux-i686.egg/dispatch/functions.py",
line 577, in _decorate
cond = self.parseRule(cond,frame=frame) or cond
File "<string>", line 10, in parseRule
File
"/usr/lib/python2.4/site-packages/RuleDispatch-0.5a0.dev_r2115-py2.4-linux-i686.egg/dispatch/functions.py",
line 440, in parseRule
return self.parse(rule, frame.f_locals, frame.f_globals)
File
"/usr/lib/python2.4/site-packages/RuleDispatch-0.5a0.dev_r2115-py2.4-linux-i686.egg/dispatch/functions.py",
line 326, in parse
return parse_expr(expr_string,builder)
File
"/usr/lib/python2.4/site-packages/RuleDispatch-0.5a0.dev_r2115-py2.4-linux-i686.egg/dispatch/ast_builder.py",
line 383, in parse_expr
return build(builder, parser.expr(expr).totuple(1)[1])
File
"/usr/lib/python2.4/site-packages/RuleDispatch-0.5a0.dev_r2115-py2.4-linux-i686.egg/dispatch/ast_builder.py",
line 378, in build
return production[nodelist[0]](builder,nodelist)
File
"/usr/lib/python2.4/site-packages/RuleDispatch-0.5a0.dev_r2115-py2.4-linux-i686.egg/dispatch/ast_builder.py",
line 178, in power
return com_call_function(builder,nodelist,node[2])
File
"/usr/lib/python2.4/site-packages/RuleDispatch-0.5a0.dev_r2115-py2.4-linux-i686.egg/dispatch/ast_builder.py",
line 284, in com_call_function
return builder.CallFunc(primaryNode, args, kw, star_node,
dstar_node)
File "build/bdist.linux-i686/egg/dispatch/predicates.py", line 545,
in method
File "build/bdist.linux-i686/egg/dispatch/predicates.py", line 170,
in CallFunc
File
"/usr/lib/python2.4/site-packages/RuleDispatch-0.5a0.dev_r2115-py2.4-linux-i686.egg/dispatch/ast_builder.py",
line 378, in build
return production[nodelist[0]](builder,nodelist)
File
"/usr/lib/python2.4/site-packages/RuleDispatch-0.5a0.dev_r2115-py2.4-linux-i686.egg/dispatch/ast_builder.py",
line 10, in <lambda>
_name = lambda builder,nodelist: builder.Name(nodelist[1])
File "build/bdist.linux-i686/egg/dispatch/predicates.py", line 58, in
Name
NameError: IntegrityError
Then, trying to diagnose the error by simplification, I tried this
code:
@errorhandling.dispatch_error.when("True")
def handle_IE(controller, tg_source, tg_errors, tg_exceptions,
*args, **kw):
log.debug("An IntegrityError (%s) ocurred in method %r of
controller %r" %
tg_exceptions, tg_source, controller)
turbogears.flash("An integrity error ocurred")
But, then got this error while execution:
500 Internal error
The server encountered an unexpected condition which prevented it from
fulfilling the request.
Page handler: <bound method Root.createsanjay of <ierr.controllers.Root
object at 0xb767cc0c>>
Traceback (most recent call last):
File
"/usr/lib/python2.4/site-packages/CherryPy-2.2.1-py2.4.egg/cherrypy/_cphttptools.py",
line 105, in _run
self.main()
File
"/usr/lib/python2.4/site-packages/CherryPy-2.2.1-py2.4.egg/cherrypy/_cphttptools.py",
line 254, in main
body = page_handler(*virtual_path, **self.params)
File "<string>", line 3, in createsanjay
File
"/usr/lib/python2.4/site-packages/TurboGears-0.9a7-py2.4.egg/turbogears/controllers.py",
line 331, in expose
output = database.run_with_transaction(
File "<string>", line 5, in run_with_transaction
File
"/usr/lib/python2.4/site-packages/TurboGears-0.9a7-py2.4.egg/turbogears/database.py",
line 282, in sa_rwt
errorhandling.dispatch_error(controller, real_func, None, e, *args,
**kw)
File "<string>", line 5, in dispatch_error
File "/Data/LearnTG/ierr/ierr/controllers.py", line 32, in handle_IE
log.debug("An IntegrityError (%s) ocurred in method %r of
controller %r" %
TypeError: not enough arguments for format string
Not able to diagnose. I am using 9a7.
Another point concerning me -
The pattern I think to use is someting like this:
@expose(template="tm.templates.form")
def edit_person(self, tg_errors=None, tg_exceptions=None):
if tg_errors:
flash("Problem validating! Please correct")
if tg_exceptions:
flash("Problem saving! Please correct")
.
.
.
@expose()
@turbogears.validate(form=person_form)
@turbogears.error_handler(edit_person)
@turbogears.exception_handler(edit_person)
def save(self, name):
u = User(name=name)
u.flush()
I guess this is the most easy way to handle errors and exceptions while
data entry by user. Need guidence on the way to achieve this pattern
with the patch.
Thanks a lot
Sanjay
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