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24 lines
701 B
Python
24 lines
701 B
Python
from django import forms
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from django.core.exceptions import ValidationError
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from party.models import Party
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class PartyForm(forms.ModelForm):
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class Meta:
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model = Party
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fields = ["name", "invited_characters"]
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def clean_invited_characters(self):
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invited = self.cleaned_data["invited_characters"]
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if not self.instance:
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return invited
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members = self.instance.characters.all()
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for character in invited:
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if character in members:
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self.add_error(
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"invited_characters",
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ValidationError(f"{character} is already a group member."),
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)
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return invited
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