models, peeking to next record - maybe
Got an problem that I am struggling to solve.. I have: class Address(models.Model): name = models.CharField() event_date = models.DateTime() event1, 25/01/2015 event2, 27/01/2015 event3, 05/02/2015 and so on… what I am trying to figure out is, how to calculate the days between each event. so event2, would be 2 days, event3 would be 9 days etc. want to end up with something like this that is passed to the template event1, 25/01/2015 event2, 27/01/2015, 2 event3, 05/02/2015, 9 its the mechanics I am having trouble working out, my initial though was to have a def on the model that accepted a datetime object. Somehow in a loop i would get the diatomite from the next event and pass it in and calc days on self.event_date… cant think how to do it. has anyone else needed something like this? or am I thinking about it wrong.. Thanks -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/63b0691e-34b1-4634-bf29-640583f22bae%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
models, peeking to next record - maybe
I am working on a problem that I am trying to figure out, not having much luck so far... I have a model, basic for this example: class Event(models.Model): name = models.Charfield(max_length=10) event_date = models.DateTime() I am trying to workout how I can calculate the number of days between each event, the query set would be orders by event_date event1, 26/01/2015 event2, 29/01/2015 event3, 03/02/2015 so event 2 would be 3 days and event 3 would be 5 days and so on. my idea was to have a model def that accepted a datetime from the previous record which would calc the days against the self.event_date its the mechanics of peeking at the next / previous record in a queryset...i am struggling with, not sure how to proceed with this problem has anyone seen this before, or am I thinking about wrong ? Thanks -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/e70aaa9a-cc2d-41a3-9333-e82618a5a50f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
