forked from rc/aircox
f7a61fe6c0
- Add configuration files for packaging - Precommit now uses ruff Co-authored-by: bkfox <thomas bkfox net> Reviewed-on: rc/aircox#127
93 lines
2.3 KiB
Python
93 lines
2.3 KiB
Python
from django.core.exceptions import ValidationError
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from django.db import models
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from django.utils.translation import gettext_lazy as _
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from .program import Program
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__all__ = (
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"Rerun",
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"RerunQuerySet",
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)
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class RerunQuerySet(models.QuerySet):
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"""Queryset for Rerun (sub)classes."""
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def station(self, station=None, id=None):
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return self.filter(program__station=station) if id is None else self.filter(program__station__id=id)
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def program(self, program=None, id=None):
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return self.filter(program=program) if id is None else self.filter(program__id=id)
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def rerun(self):
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return self.filter(initial__isnull=False)
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def initial(self):
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return self.filter(initial__isnull=True)
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class Rerun(models.Model):
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"""Abstract model offering rerun facilities.
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Assume `start` is a datetime field or attribute implemented by
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subclass.
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"""
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program = models.ForeignKey(
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Program,
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models.CASCADE,
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db_index=True,
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verbose_name=_("related program"),
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)
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initial = models.ForeignKey(
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"self",
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models.SET_NULL,
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related_name="rerun_set",
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verbose_name=_("rerun of"),
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limit_choices_to={"initial__isnull": True},
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blank=True,
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null=True,
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db_index=True,
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)
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objects = RerunQuerySet.as_manager()
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class Meta:
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abstract = True
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@property
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def is_initial(self):
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return self.initial is None
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@property
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def is_rerun(self):
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return self.initial is not None
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def get_initial(self):
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"""Return the initial schedule (self or initial)"""
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return self if self.initial is None else self.initial.get_initial()
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def clean(self):
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super().clean()
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if hasattr(self, "start") and self.initial is not None and self.initial.start >= self.start:
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raise ValidationError({"initial": _("rerun must happen after original")})
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def save_rerun(self):
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self.program = self.initial.program
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def save_initial(self):
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pass
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def save(self, *args, **kwargs):
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if self.initial is not None:
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self.initial = self.initial.get_initial()
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if self.initial == self:
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self.initial = None
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if self.is_rerun:
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self.save_rerun()
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else:
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self.save_initial()
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super().save(*args, **kwargs)
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