Re: [Archetypes-users] Prevent duplicate filename creation

[Bastien G. <GBa...@co...>]

To avoid the object being created (or copied from portal_factory), maybe =
you should write a validator for the field 'Title ' in your form...  As =
long as the form is not saved, the object is not created in your context =
(when using portal_factory...).  I think it should not be difficult to =
place the code of your Title() method in a validator...

Create your validator class in your AT file that will implement =
Ivalidator (__implements__ =3D (IValidator, )) and use =
validation.register(MyValidator('isMyValidator')) to register it...

BASTIEN Gauthier
Service Informatique - Administration Communale de Sambreville
071/260.247
http://www.sambreville.be

-----Message d'origine-----
De : arc...@li... =
[mailto:arc...@li...] De la part de =
Sin=E9ad Reynolds
Envoy=E9 : mercredi 16 ao=FBt 2006 11:31
=C0 : arc...@li...
Objet : [Archetypes-users] Prevent duplicate filename creation

Hi,

I am trying to prevent duplicate form creation from an archetype. I have =
the following script, which works fine for this, but it also prevents =
the form being edited after creation, as if it is a new form being =
created.

_at_rename_after_creation =3D True

     #rename the title field to the user's name and the date & prevent =
duplicates
     def Title(self, check_auto_id=3DFalse):
         target_title =3D self.Creator() + ' ' + =
DateTime().strftime("%Y")=20
+ ': Role Profile'
         target_id =3D self.plone_utils.normalizeString(target_title)
         parent =3D self.aq_inner.aq_parent
         if target_id in parent.objectIds():
             raise Exception, "Your form for this year already exists - =
please edit the existing form instead."
         else:
             return target_title


I have looked at
http://plone.org/documentation/tutorial/richdocument/controlling-creation=

and
http://plone.org/documentation/how-to/addContentProgrammatically

Any ideas on how I can allow the form to be edited after creation and=20
prevent duplicates?

Many thanks for all assistance!
Sin=E9ad


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