On May 31, 2007, at 7:17 PM, aspineux wrote:
>
> This append in a Form definition, when a callable is passed to a
> validator used
> in the Form.validator
>
> Here is a short test case.
>
> from turbogears import validators, controllers, widgets
>
> def downcase(v):
> return v.lower()
>
> class MySchema(validators.Schema):
> foo = validators.Wrapper(to_python=downcase)
>
> class MyForm(widgets.TableForm):
> fields = [
> widgets.TextField('bar', label="Bar" ,
> validator=validators.String(not_empty=True))
> ]
> validator = MySchema()
>
> myform=MyForm()
>
> The problem is TG merge schema defined by MyForm.fields and
> MyForm.validator.
> A deepcopy of the second one generate an Exception.
>
> I found the problem trying to create my own FormValidator that wrap a
> function.
>
> Here is the Traceback
>
> Traceback (most recent call last):
> File "./bug_validator.py", line 19, in ?
> myform=MyForm()
> File "/usr/lib/python2.4/site-packages/TurboGears-1.0.1-py2.4.egg/
> turbogears/widgets/meta.py", line 168, in widget_init
> validator = generate_schema(self.validator, widgets)
> File "/usr/lib/python2.4/site-packages/TurboGears-1.0.1-py2.4.egg/
> turbogears/widgets/meta.py", line 265, in generate_schema
> schema = copy_schema(schema)
> File "/usr/lib/python2.4/site-packages/TurboGears-1.0.1-py2.4.egg/
> turbogears/widgets/meta.py", line 210, in copy_schema
> return copy.deepcopy(schema)
> File "/usr/lib/python2.4/copy.py", line 204, in deepcopy
> y = _reconstruct(x, rv, 1, memo)
> File "/usr/lib/python2.4/copy.py", line 351, in _reconstruct
> state = deepcopy(state, memo)
> File "/usr/lib/python2.4/copy.py", line 174, in deepcopy
> y = copier(x, memo)
> File "/usr/lib/python2.4/copy.py", line 268, in _deepcopy_dict
> y[deepcopy(key, memo)] = deepcopy(value, memo)
> File "/usr/lib/python2.4/copy.py", line 174, in deepcopy
> y = copier(x, memo)
> File "/usr/lib/python2.4/copy.py", line 268, in _deepcopy_dict
> y[deepcopy(key, memo)] = deepcopy(value, memo)
> File "/usr/lib/python2.4/copy.py", line 204, in deepcopy
> y = _reconstruct(x, rv, 1, memo)
> File "/usr/lib/python2.4/copy.py", line 351, in _reconstruct
> state = deepcopy(state, memo)
> File "/usr/lib/python2.4/copy.py", line 174, in deepcopy
> y = copier(x, memo)
> File "/usr/lib/python2.4/copy.py", line 268, in _deepcopy_dict
> y[deepcopy(key, memo)] = deepcopy(value, memo)
> File "/usr/lib/python2.4/copy.py", line 204, in deepcopy
> y = _reconstruct(x, rv, 1, memo)
> File "/usr/lib/python2.4/copy.py", line 336, in _reconstruct
> y = callable(*args)
> File "/usr/lib/python2.4/copy_reg.py", line 92, in __newobj__
> return cls.__new__(cls, *args)
> TypeError: function() takes at least 2 arguments (0 given)
What version of TG are you using? deepcopy is no longer used to copy
Schemas since rev. 2954 (post 1.0.1, pre 1.0.2)
Could you try that in 1.0.2.2 see if works?
Thanks,
Alberto
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