I'm trying to be too clever with my python again. Maybe someone
will see an easier way to do this.
I've got a set of DB classes with very similar structure, and I
want to write a single CRUD controller that will handle them
all. The only things that need to be different for the different
classes are (1) the db class, (2) the display/edit forms, and
(3) a display text label. (1) and (3) are easy, but (2) is
giving me some trouble, because the "normal" pattern is to
reference the form in an @validate decorator.
What I'm trying to do is something like:
class CRUD(Controller):
def __init__(self, dbclass, form, label):
....
self.__class__.save =
expose()(validate(form=self.editform)(error_handler(self.__class__.edit)(self.__class__.save)))
@expose(.templates.editform)
def edit(self, id, tg_errors=None, **formdata):
....
formdata = dbclass.get(id)
....
return dict(form=self.editform, formdata=formdata,
label=self.label)
def save(self, id, label=None):
....
class AccountsController(CRUD): pass
class EntriesController(CRUD): pass
class Root(RootController):
accounts = Accounts(Account, accountform, 'Account')
entries = EntriesController(Entry, entryform, 'Entry')
The overly tricky bit should be obvious, in the init method. This works
great except for the fact that the error_handler isn't getting recognized.
When there's a validation error I get the following traceback:
File
"/var/www/finance.bitdance.com/moneytracker/lib/python2.4/TurboGears-1.0.1-py2.4.egg/turbogears/errorhandling.py",
line 110, in run_with_errors raise NotImplementedError("Method %s.%s()
has no applicable "
NotImplementedError: Method FlowTypeController.add() has no applicable
error handler.
I presume I can work around this by defining the save method in the
subclass and decorating it, but I hate to have to write the redundant
code :). Is there some way to set the error handler (and the
validator, for that matter) other than the decorator?
--David
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"TurboGears" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/turbogears?hl=en
-~----------~----~----~----~------~----~------~--~---
