The database isn't going to know about your property because that's all
on the python side (thus the error). Why do you need the formatted time
when looking in the database? I think Pedro is right, if this is only
for display, it'd be better to do it with a template tag/filter.
Casey
On 10/22/2011 06:18 PM, dr.phil wrote:
Thank you for the response. I added a function to the model to convert
a datetime field into the needed format (def convert_time). Then I set
new_time = property(convert_time). If I iterate over the queryset I
can access each.new_time BUT I need the value in the queryset
(Model.objects.filter().values('new_time')). Unfortunately Iget an
attribute error.
Thank you.
On Oct 22, 2:10 pm, Pedro Vasconcelos<pe...@pedrorafa.com> wrote:
Hello,
A possible solution is create a specific method in your model class to do
this calculation. Take a look
at:https://docs.djangoproject.com/en/1.3/topics/db/models/#model-methods
If you only want to do this calculations to show it in templates you may
consider creating a specific template custom tag/filters.
Regards,
On Sat, Oct 22, 2011 at 1:31 AM, dr.phil<dr.p...@allergyct.com> wrote:
Is this possible? I have a model that includes a datetime field. When
creating a queryset of this model, I want to include a calculated
field of the time difference (in hours:minutes compared to
datetime.now).
Currently, when creating a queryset the datetime is included. I can
iterate through the queryset to calculate the time difference and
replace the value. HOWEVER, when I act on this queryset, the original
(with datetime oject) is used, not the new dictionary I created.
Help is apppreciated.
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