I'm not sure I understand. Do you want the value of the "count" field in
the Activity model? In that case, you could use values:
activity_counts = i.activities.all().values('id', 'count') #Will give
you something like [{'id': 1, 'count': 3}, {'id': 2, 'count': 5}, ...]
_Nik
On 11/13/2012 3:09 PM, luke lukes wrote:
> Hi. I don't need a total counter for all related activities. I need a
> counter for each related Activity:
> Invoice instance:
> activity A -> counter: 3
> activity B -> counter: 5
> ...
> ...
>
> is this possible?
> thanks,
> Luke
>
>
> Il giorno martedě 13 novembre 2012 23:25:28 UTC+1, Nikolas
> Stevenson-Molnar ha scritto:
>
> With an Invoice instance, you can easily get the number of related
> Activity objects:
>
> i = Invoice.objects.get(pk=1)
> num_activities = i.activities.all().count()
>
> _Nik
>
> On 11/13/2012 12:49 PM, luke lukes wrote:
>> Hi everyone. hi have these models:
>>
>> #models.py
>>
>> class Subject(models.Model):
>> name = models.CharField("Name",max_length=50, blank=True)
>> ...
>> ...
>>
>> class Activity(models.Model):
>> label = models.CharField("Act. name",max_length=150)
>> price = models.DecimalField("price", max_digits=10,
>> decimal_places=2,default=0)
>> count = models.IntegerField("Count", default=0)
>>
>> def __unicode__(self):
>> return u"%s" % (self.label)
>> class Meta:
>> verbose_name_plural = "Activities"
>>
>>
>> class Invoice(models.Model):
>> subject = models.ForeignKey(Subject)
>> date = models.DateField(default=date.today())
>> activities = models.ManyToManyField(Activity)
>> ....
>> ....
>>
>>
>> while creating a new Invoice instance on admin, i can select the
>> many to many fields 'activities', but i'd like to have an
>> additional counter (eg. an IntegerField) as an Invoice field to
>> count and save the quantity of each activity added to my Invoice
>> instance. Is this possible?
>>
>> I mean: for each 'Activity' added to an Invoice instance, i need
>> to count the amount of that activity.
>>
>>
>> thanks,
>>
>> LuKe
>>
>>
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