admin.py 文件源码

def generate_pairings_view(self, request, object_id):
        round_ = get_object_or_404(Round, pk=object_id)
        if not request.user.has_perm('tournament.generate_pairings', round_.season.league):
            raise PermissionDenied

        if request.method == 'POST':
            form = forms.GeneratePairingsForm(request.POST)
            if form.is_valid():
                try:
                    if form.cleaned_data['run_in_background']:
                        signals.do_generate_pairings.send(sender=self.__class__, round_id=round_.pk, overwrite=form.cleaned_data['overwrite_existing'])
                        self.message_user(request, 'Generating pairings in background.', messages.INFO)
                        return redirect('admin:review_pairings', object_id)
                    else:
                        pairinggen.generate_pairings(round_, overwrite=form.cleaned_data['overwrite_existing'])
                        with reversion.create_revision():
                            reversion.set_user(request.user)
                            reversion.set_comment('Generated pairings.')
                            round_.publish_pairings = False
                            round_.save()

                        self.message_user(request, 'Pairings generated.', messages.INFO)
                        return redirect('admin:review_pairings', object_id)
                except pairinggen.PairingsExistException:
                    if not round_.publish_pairings:
                        self.message_user(request, 'Unpublished pairings already exist.', messages.WARNING)
                        return redirect('admin:review_pairings', object_id)
                    self.message_user(request, 'Pairings already exist for the selected round.', messages.ERROR)
                except pairinggen.PairingHasResultException:
                    self.message_user(request, 'Pairings with results can\'t be overwritten.', messages.ERROR)
                except pairinggen.PairingGenerationException as e:
                    self.message_user(request, 'Error generating pairings. %s' % e.message, messages.ERROR)
                return redirect('admin:generate_pairings', object_id=round_.pk)
        else:
            form = forms.GeneratePairingsForm()

        context = {
            'has_permission': True,
            'opts': self.model._meta,
            'site_url': '/',
            'original': round_,
            'title': 'Generate pairings',
            'form': form
        }

        return render(request, 'tournament/admin/generate_pairings.html', context)