Display description, but non-updatable data block

Question

To display my Item_Description, I've created a post-query trigger to lookup Item_Description based on Item_Num, which works fine, except if the user does not have update priveledge. By default the data block is non-updatable. If the user has update, then the block is set updatable at run-time.
Problem is, for a non-update priveledge user, the form errors when the trigger attempts to set the description field. [Even though the field is set updatable by default.]
What am I missing? Thanks.

Answer 1

I'm confused. You say:
"By default the data block is non-updatable."
but then you say:
"...the field is set updatable by default."
If the data block is not updateable, then you can't make the item updateable.
Assuming the default is non-updateable, and a user does not have update privilege, then the error message you are getting is correct because the trigger is trying to do an update when the item is non-updateable.
If you need the trigger to do an update, then you need to make the item updateable. If you don't want the trigger to do an update for this user, then first check if the item is updateable (use the get_item_property), and if it is updateable, then let the trigger do the update.
Message was edited by:
Mark Roberts