Toystore: Custom TextField Renderer - can this be applied to list values?

If you use a list value with a Binding Container and the Struts Validator it behaves similar to the discussion in the toystore notes (the original value is lost - resets to the model value). Can your same idea in toystore be used to fix it for list items, and if so, how? (I'm trying by applying a PickList renderer on numbers but not getting anything working).
Thanks for help!!

Hi,
If SharePoint were to enforce uniqueness on a column in a list where users are only allowed to see and edit list items that have created, then you could have a scenario where -
a. user1 tries to add a new item to the list which violates the uniqueness constraint
b. SharePoint reports an error
c. user1 gets to know that there is another item containing the same value in this list
d. this violates the security settings that you configured (each user should be allowed to only see the items that they have created). Now if you change the permissions settings to allow users to SEE all items, but only
edit items that they have created, this error disappears (obviously).
Now getting to the workaround you mentioned (creating a unique constraint on the SQL Server table). This is not going to be possible for numerous reasons -
a. Modifying (or for that matter, even performing SELECT operations on) the SQL Server tables is an unsupported operation and it will definetely break other things in SharePoint, not
to mention that you will lose all support options from Microsoft. However if you don't care about this, then it will still not be technically possible because...
1. SharePoint does not create a new SQL Server table for every list/library.
2. If you did get around to enforcing a unique constraint in the one single table that SharePoint uses for all lists, then you will be enforcing this constraint on each and every list in all the sites and in all the site
collections that are assigned to that content database.
Please "Mark as Answer" if a post has answered your question or "Vote as Helpful" if it was helpful in some way. Here's
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I HAVE ALSO POSTED THIS IN THE JAVA PROGRAMMING FORUM PLEASE DONT GET OFFENDED AS I AM EXPECTING AN URGENT RESPONSEWell, someone has probably already answered this question in the Java forum, so I won't waste my time and answer it again here.

Toystore: Custom TextField Renderer - can this be applied to list values?

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