Nagarjuna G. wrote:
Hello,
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:
http://plone.org/documentation/manual/archetypes-developer-manual/fields/fields-reference
is a good place to start.
JJ
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