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from django import forms
from django.db.models import Q
from symposion.schedule.models import Presentation
class SlotEditForm(forms.Form):
presentation = forms.ModelChoiceField(queryset=Presentation.objects.none())
def __init__(self, *args, **kwargs):
content = kwargs.pop("content", None)
if content:
kwargs.setdefault("initial", {})["presentation"] = content
super(SlotEditForm, self).__init__(*args, **kwargs)
queryset = Presentation.objects.exclude(cancelled=True).order_by("proposal_base__pk")
if content:
queryset = queryset.filter(Q(slot=None) | Q(
self.fields["presentation"].required = False
queryset = queryset.filter(slot=None)
self.fields["presentation"].required = True
self.fields["presentation"].queryset = queryset
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