Django _set.all filter not working in template

问题

I'm trying to filter a list of objects in my database but I can't get it to work on the template using _set.all. The strange thing is it's something I've done in two other places in my project but I cant see why it isnt working this time.

view.py:

class GolfMonthlyView(generic.ListView):
    template_name="monthly_view/golf-monthly-view.html"
    context_object_name='golf_monthly_view'
    queryset = GolfMonthlyView.objects.all()

    def get_context_data(self, **kwargs):
        context = super(GolfMonthlyView, self).get_context_data(**kwargs)
        context['golftour'] = golf_models.Tour.objects.all()
        context['golftournament'] = golf_models.Tournament.objects.all()

models:

class Tour(models.Model):
    name = models.CharField(max_length=100)

class Tournament(models.Model):
    tour = models.ForeignKey('Tour', on_delete=models.CASCADE)
    name = models.CharField(max_length=100)

template html:

{% for info in golf_monthly_view %}
 {% for competition in golftour %}
    {% for golftournament in golftour.golftournament_set.all %}
      <ul>
        <li>{{golftournament.name}}</li>
      </ul>
   {% endfor %}
 {% endfor %}
{% endfor %}

The good news out of all this is in trying to work out my problem its forced me to use the Django Shell for the first time properly. So I know the relationship is there and functional, it just isnt displaying in the template.

Edit: The working thing:

class RugbyMonthlyView(generic.ListView):
    template_name="monthly_view/rugby-monthly-view.html"
    context_object_name='rugby_monthly_view'
    queryset = RugbyMonthlyView.objects.all()

    def get_context_data(self, **kwargs):
       context = super(RugbyMonthlyView, self).get_context_data(**kwargs)
       context['competition'] = rugby_models.Competition.objects.all()
       context['match'] = rugby_models.Match.objects.all()
       return context

model.py:

class Competition(models.Model):
name = models.CharField(max_length=200)

class Match(models.Model):
    competition = models.ForeignKey('Competition', on_delete=models.CASCADE)

html template:

{% for match_info in rugby_monthly_view %}
 {% for competition in competition %}
  *code*
  {% for match in competition.match_set.all %}
   *code*
  {% endfor %}
 {% endfor %}
{% endfor %}

回答1:

You have golftour.golftournament_set.all nested in a loop on the context list golf_monthly_view (not sure why you're doing this), which I think is empty because the ListView QuerySet is wrong:

queryset = GolfMonthlyView.objects.all()
#          ^^^^ ?? This is not a model

If you yank off the outer for loop for example, the inner loops should proceed if the QuerySets are not empty:

{% for competition in golftour %}
    {% for golftournament in golftour.tournament_set.all %}
      <ul>
        <li>{{golftournament.name}}</li>
      </ul>
    {% endfor %}
{% endfor %}

来源：https://stackoverflow.com/questions/47399586/django-set-all-filter-not-working-in-template