why don't you use callbacks ? they are the most useful feature in DAL's in
my POV.
http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#before-and-after-callbacks
On Monday, October 7, 2013 8:55:29 PM UTC+2, James Thompson wrote:
>
> I thought default=request.now and update=request.net reflect changes in
> the record as a whole?
> I'm looking for something that only updates when the value of the status
> field changes.
>
> On Monday, October 7, 2013 3:31:33 AM UTC-10, 黄祥 wrote:
>>
>> i think you can achieve it with default.
>> e.g.
>> Field('f_status_change_dt', type='datetime',
>> label=T('Status Change Dt')*, default=request.now*)
>>
>> or if you set auth.signature or record_versioning, web2py automatically
>> do that for you.
>>
>> ref:
>>
>> http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#Record-versioning
>>
>> http://web2py.com/books/default/chapter/29/09/access-control#Record-versioning
>>
>> best regards,
>> stifan
>>
>
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