Question

I have a model with many-to-many fields and I need to get an ID selected from a many to many field. I decorated a get_absolute_url method with permaling decorator. And it doesn’t work. So I understand that I need to reverse the relation, it is obvious from the trace, but I do not really understand what should I do?

Model:

class MenuItems(models.Model):
    reference_value = models.CharField(max_length=255)
    filter_ids = models.ManyToManyField(Filter, blank = True)

    def __unicode__(self):
        return u'%s' % self.reference_value

    @models.permalink
    def get_absolute_url(self): 
        return ('homepage_ids', None, {'ids': self.filter_ids })

I tried to do with the reverse(), but I have the behavior of the method didn’t changed.

    @models.permalink
    def get_absolute_url(self): 
        return reverse('homepage_ids', kwargs={'ids': self.filter_ids })

Answer 1

without seeing the url pattern.

self.filter_ids does not return a list of ids, something like.

self.filter_ids.all().values_list('id', flat=True)

would return [1,2,3]