Re: [Zope3-Users] Re: Default value for an interface attribute
How about checking whether the value of 'default' is a
callable and if so call it to obtain the default value.
Yup... but evaluation of this is done internally by Zope schema
package in Field class I think. Seems for me that there is no way
to define 'default' as callable.
Right. This is an unsupported use case. I bet if someone writes up a
proposal and brings it up to discussion on zope3-dev@zope.org we'll find
a common solution to this.
Please also notice that we're moving to using launchpad more heavily. So
if you write a proposal in the wiki, please also submit it as a feature
request (blue print) in launchpad for the Zope 3 product.
I was playing a bit more with this issue and I realized that formlib
fields have 'get_rendered' method which is called to get default
values for a field. It is described at 'Computing default values'
section in formlib/form.txt.
Example from form.txt:
class MyAddForm(form.AddFormBase):
... actions = ()
...
... def now(self):
... return datetime.datetime(2002, 12, 2, 12, 30)
...
... form_fields = form.Fields(
... form.Fields(IOrder).omit('now'),
... form.Field(IOrder['now'], get_rendered=now),
... )
...
... def setUpWidgets(self, ignore_request=True):
... super(MyAddForm, self).setUpWidgets(ignore_request)
--
Maciej Wisniowski
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Re: [Zope3-Users] Re: Default value for an interface attribute
--- Raphael Ritz [EMAIL PROTECTED] wrote:
How about checking whether the value of 'default' is a
callable and if so call it to obtain the default value.
That way
defautl=date.today
(without the ())should do what Douglas expects (maybe
this is even the case already?).
I tried this way, but raises this Exception:
ConfigurationError: ('Invalid value for', 'interface', (built-in method today
of type object at 0xb79465c0, type 'datetime.date'))
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Re: [Zope3-Users] Re: Default value for an interface attribute
How about checking whether the value of 'default' is a callable and if so call it to obtain the default value. Yup... but evaluation of this is done internally by Zope schema package in Field class I think. Seems for me that there is no way to define 'default' as callable. -- Maciej Wisniowski ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Re: Default value for an interface attribute
Hi, Am Donnerstag, den 01.03.2007, 16:54 +0100 schrieb Maciej Wisniowski: How about checking whether the value of 'default' is a callable and if so call it to obtain the default value. Yup... but evaluation of this is done internally by Zope schema package in Field class I think. Seems for me that there is no way to define 'default' as callable. Right. This is an unsupported use case. I bet if someone writes up a proposal and brings it up to discussion on zope3-dev@zope.org we'll find a common solution to this. Please also notice that we're moving to using launchpad more heavily. So if you write a proposal in the wiki, please also submit it as a feature request (blue print) in launchpad for the Zope 3 product. Christian -- gocept gmbh co. kg - forsterstraße 29 - 06112 halle/saale - germany www.gocept.com - [EMAIL PROTECTED] - phone +49 345 122 9889 7 - fax +49 345 122 9889 1 - zope and plone consulting and development signature.asc Description: Dies ist ein digital signierter Nachrichtenteil ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
