Thanks, the best bet is the raw query, because I actually need the Sum of the method result for all the instances in the query...
2014-11-24 3:52 GMT-05:00 monoBOT <[email protected]>: > You can create a model method (with no parameter) that can solve that, so > you can call it from the templates. > > something like: > > class MyObject(models.Model): > a = models.IntegerField() > b = models.Integerfield() > > def miOperation(self): > return self.a + self.b > > def miOtherOpertion(self): > return self.a * self.b > > > > 2014-11-24 4:21 GMT+00:00 Ethan Blackburn <[email protected]>: > >> related: https://groups.google.com/forum/#!topic/django-users/s9qgXC4TNrA >> >> Short answer: you can't. A raw query would be your best bet(i.e. "SELECT >> SUM(a + b) AS sum FROM app_X") >> >> >> On Sunday, November 23, 2014 4:42:48 PM UTC-6, Jorge Andrés Vergara >> Ebratt wrote: >>> >>> Hello everyone, >>> >>> Well, the tittle says it all: >>> >>> I have a model X >>> >>> class X(models.Model) >>> a = models.IntegerField() >>> b = models.IntegerField() >>> >>> def getC(self): >>> return a + b >>> >>> >>> So, when I'm inside a template I can call {{x.getC}} and it gets the >>> method for the current instance it's in, but how can I get the Sum, or Avg >>> of that method? I tried doing Sum('getC') but I get the error because getC >>> isn't callable in the query... >>> >>> Thanks in advance for the help >>> >>> -- >>> *Jorge Andres Vergara Ebratt* >>> *#SoftwareDeveloper (Or at least trying to be)* >>> *@javebratt* >>> *facebook.com/javebratt <http://facebook.com/javebratt>* >>> >> -- >> 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 [email protected]. >> To post to this group, send email to [email protected]. >> 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/b5350447-264f-4145-be9d-8ea709673918%40googlegroups.com >> <https://groups.google.com/d/msgid/django-users/b5350447-264f-4145-be9d-8ea709673918%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > *monoBOT* > Visite mi sitio(Visit my site): monobotsoft.es/blog/ > > -- > 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 [email protected]. > To post to this group, send email to [email protected]. > 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/CA%2BxOsGBZFBmfcqJDMuRppms8CVp8yc0-nnWpymkomUUQ07_fbQ%40mail.gmail.com > <https://groups.google.com/d/msgid/django-users/CA%2BxOsGBZFBmfcqJDMuRppms8CVp8yc0-nnWpymkomUUQ07_fbQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- *Jorge Andres Vergara Ebratt* *#SoftwareDeveloper (Or at least trying to be)* *@javebratt* *facebook.com/javebratt <http://facebook.com/javebratt>* -- 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 [email protected]. To post to this group, send email to [email protected]. 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/CAAeX05Fj7zX%2B_4fyW9d8c20rg6ggRxvm1PavmRA4ymrNTSDkbQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
