Django: 'long' object is not iterable

Question

I have a model

class tournaments(models.Model):
    # ....
    total_rounds = models.IntegerField(max_length=11, blank=True, null=True)
    # ....

    def get_total_rounds_count(self):
        return self.total_rounds

views.py:

def tourney_view(request, offset):
    # .....
    if (offset):
        selected_tournament =  tournaments.objects.get(id=offset)
    return render_to_response('tournament.html', {'tournament': selected_tournament})

In 'tournament.html' template i trying to loop over total_rounds:
```
{% for q in tournament.get_total_rounds_count%}
{% endfor %}
```

And got error: 'long' object is not iterable Why? My field is IntegerField, and i am simply trying to loop over integer values, but get "not iterable"

For future posts: [How do I format my code blocks?](http://meta.stackexchange.com/q/22186) — Martijn Pieters, Jul 08 '12 at 13:02
And what does `tournament.get_total_rounds_count` return? (As I suspect Otto is right here...) — Jon Clements, Jul 08 '12 at 13:02
@Rusty: 'long' is python's unbounded integer format; it is basically the same. What Jon was trying to say is that the error message is expected. — Martijn Pieters, Jul 08 '12 at 13:05
See [Numeric for loop in Django templates](http://stackoverflow.com/questions/1107737/numeric-for-loop-in-django-templates). — interjay, Jul 08 '12 at 13:05

score 3 · Accepted Answer · answered Jul 08 '12 at 13:02

3

You can either use this snippet: http://djangosnippets.org/snippets/1357/

Or define Tournament.get_total_rounds which returns range(get_total_rounds_count)

answered Jul 08 '12 at 13:02

Otto Allmendinger

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when i trying to use "range" i get error from django parser:Could not parse the remainder: '(tournament.get_total_rounds_count)' from 'range(tournament.get_total_rounds_count)' – Rusty Jul 08 '12 at 13:04

score 2 · Answer 2 · answered Jul 08 '12 at 13:11

Yeah, Otto's way is best, just update your function to return the range.

 class tournaments(models.Model):
     # ....
     total_rounds = models.IntegerField(max_length=11, blank=True, null=True)
     # ....

     def get_total_rounds_count(self):
         return range(self.total_rounds)

score 0 · Answer 3 · answered Jul 08 '12 at 13:00

0

That's because you can't use for construction with numbers

answered Jul 08 '12 at 13:00

Daniil Ryzhkov

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And what should i do if i want to loop over "total_rounds " ? – Rusty Jul 08 '12 at 13:02
@Rusty: You can't loop over numbers; you *can* create a loop that iterates a "total_rounds" number of times, but that's a different concept.. – Martijn Pieters Jul 08 '12 at 13:03
Is there some way to use "range(tournament.get_total_rounds_count)" or something equal in django template? – Rusty Jul 08 '12 at 13:06

Django: 'long' object is not iterable

3 Answers3