[Product-Developers] Re: unique title
joshjohnson.cpc at gmail.com
Tue Jul 1 12:20:41 UTC 2008
Nagarjuna G. wrote:
> The product I am developing (Archetypes product) requires each content
> object to have a site wide unique id, where the id is based on the
> user supplied title string.
> The statement " _at_rename_after_creation = True" takes care of
> creating unique ids. However when the user supplies same title next
> time the object still gets created with 'supliedtitle-1',
> suppliedtitle-2 etc. I want to inform Plone that title is unique. I
> looked at the documentation, but could find any clue. Can some one
> give me a direction. It will be very nice if the schema definition
> allows an option like "unique=1". Is this possible?
The best way I can think of is to set up a custom validator for that
field, then do the check yourself.
I haven't done this yet myself, but the entry for 'validators' in the
common field attribute list here:
is a good place to start.
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