Django: Order AdminModel by Custom Property -


i have model property i'd have adminmodel ordered by. 

class storeadmin(admin.modeladmin):     list_display = ('user', 'total',)  admin.site.register(store, storeadmin)

model:

class store(models.model):     user = models.foreignkey(user, related_name="store")      @property     def total(self):         num = 0         x in coins.objects.all():             num += x.value         return num

how order modeladmin total since property? in advance help!

give link shot, may have answer. https://stackoverflow.com/a/8478586/1011998

in short, since property you're trying order doesn't exist in sql, sql has return results , order them property in python instead. can imagine, slower.

i'd suggest looking storing field "total" field in database denormalized field (int) , update whenever user object updated overriding save() method. way benefit both speed of not having , dynamically recalculate totals on fly (that'll become sql later when working medium-big data), , speed of mysql indexing (always consider "where" , "order by" clauses are).


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