Re: faking an append-only field

[Dirk Bergstrom]

On 8/1/2002 11:27 AM, Mike Hoolehan expounded at length upon:
> With the gnats 4 beta, I'm attempting to mimic the audit trail behavior I'm
> used to in bugzilla (basically an append-only field).  Here's my attempt,
> that works mostly:
> field "Add-To-Audit-Trail" {
[snip]
> }   
> Then I just made the original Audit-Trail field 'read-only'.   

man, that's pretty slick!

> This strategy works correctly except after the PR has just been created 
> and the PR is edited the first time.  Even if the user doesn't change the 
> "Add-To-Audit-Trail" field on the gnatsweb interface, the on-change 
> stuff is being run.  I've experimented with conditional 'on-change' using
> regexes, but nothing seemed to help.  

i'm pretty sure that the problem arises because add-to-audit-trail is
not actually in the PR after it's created (ie. it's not an initial-entry
field).  this means that after the first edit, the value in the field
has "changed", because it's gone from the empty string to a single
newline (or something like that).

you might be able to fix this by setting a default value of " " for the
field, or whatever value gnatsweb seems to be sticking in there.  adding
it to the initial-entry list might also solve the problem, but that's an
ugly fix.

hope this helps.

-- 
Dirk Bergstrom                   address@hidden
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