Group by location and group in template - django

Question

I try to display data from db and place them under correct title.
models.py
class Game(models.Model):
location= models.ForeignKey('location', on_delete=models.CASCADE')
group = models.IntegerField()
firstname = models.CharField()
surname = models.CharField()
views.py
class group(generic.CreateView):
template_name = 'group.html'
def get(self, request, *args, **kwargs):
game = Game.objects.filter(location__type__pk=kwargs['pk']).order_by('location__pk', 'group')
context = {
'game': game,
}
return render(request, self.template_name, context)
Lets say that the 'group' can be like A, B, C etc.
In the template I want to display it like
Location Foo
Group A
Jonas Andersson
Lisa Silverspoon
Group B
Sven Bohlin
Göran Lantz
Location Bar
Group A
Mia Milakovic
Lars Larsson
Group B
Anna Annasdotter
I have tried with so many variants of for-loops without any success.
Is it possible? Can you do this?

Answer 1

You can use template filter regroup, as in,
{% regroup games by location as games_list %}
{% for location, games in country_list %}
{{ location }}
{% for game in games %}
{{ game.group }}
...
{% endfor %}
{% endfor %}
Note: games here is a list, which is why you need to loop over it again.
Hope this helps!

Answer 2

The builtin regroup tag should enable you to do this, but you'll need to use it twice in order to achieve the nested grouping that you're looking for.
{% regroup game by location as games_loc %} <!-- Group by "location" -->
{% for location, l_games in games_loc %}
<div>{{ location }}</div>
{% regroup l_games by group as games_grp %} <!-- Group by "group" -->
{% for group, g_games in games_grp %}
<div>{{ group }}</div>
{% for g in g_games %} <!-- Display games in group -->
<div>{{ g }}</div>
{% endfor %}
{% endfor %}
{% endfor %}