Chris Tactic
55123c386d
cfr #121 Co-authored-by: Christophe Siraut <d@tobald.eu.org> Co-authored-by: bkfox <thomas bkfox net> Co-authored-by: Thomas Kairos <thomas@bkfox.net> Reviewed-on: #131 Co-authored-by: Chris Tactic <ctactic@noreply.git.radiocampus.be> Co-committed-by: Chris Tactic <ctactic@noreply.git.radiocampus.be>
97 lines
2.6 KiB
Python
97 lines
2.6 KiB
Python
from django.core.exceptions import ValidationError
|
|
from django.db import models
|
|
from django.db.models import F, Q
|
|
from django.utils.translation import gettext_lazy as _
|
|
|
|
from .program import Program
|
|
|
|
|
|
__all__ = (
|
|
"Rerun",
|
|
"RerunQuerySet",
|
|
)
|
|
|
|
|
|
class RerunQuerySet(models.QuerySet):
|
|
"""Queryset for Rerun (sub)classes."""
|
|
|
|
def station(self, station=None, id=None):
|
|
return self.filter(program__station=station) if id is None else self.filter(program__station__id=id)
|
|
|
|
def program(self, program=None, id=None):
|
|
return self.filter(program=program) if id is None else self.filter(program__id=id)
|
|
|
|
def rerun(self):
|
|
return self.filter(initial__isnull=False)
|
|
|
|
def initial(self):
|
|
return self.filter(initial__isnull=True)
|
|
|
|
|
|
class Rerun(models.Model):
|
|
"""Abstract model offering rerun facilities.
|
|
|
|
Assume `start` is a datetime field or attribute implemented by
|
|
subclass.
|
|
"""
|
|
|
|
program = models.ForeignKey(
|
|
Program,
|
|
models.CASCADE,
|
|
db_index=True,
|
|
verbose_name=_("related program"),
|
|
)
|
|
initial = models.ForeignKey(
|
|
"self",
|
|
models.SET_NULL,
|
|
related_name="rerun_set",
|
|
verbose_name=_("rerun of"),
|
|
limit_choices_to=Q(initial__isnull=True) & Q(program=F("program")),
|
|
blank=True,
|
|
null=True,
|
|
db_index=True,
|
|
)
|
|
|
|
objects = RerunQuerySet.as_manager()
|
|
|
|
class Meta:
|
|
abstract = True
|
|
|
|
@property
|
|
def is_initial(self):
|
|
return self.initial is None
|
|
|
|
@property
|
|
def is_rerun(self):
|
|
return self.initial is not None
|
|
|
|
def get_initial(self):
|
|
"""Return the initial schedule (self or initial)"""
|
|
return self if self.initial is None else self.initial.get_initial()
|
|
|
|
def clean(self):
|
|
super().clean()
|
|
if hasattr(self, "start") and self.initial is not None and self.initial.start >= self.start:
|
|
raise ValidationError({"initial": _("rerun must happen after original")})
|
|
|
|
def save_rerun(self):
|
|
if not self.program_id:
|
|
self.program = self.initial.program
|
|
if self.program != self.initial.program:
|
|
raise ValidationError("Program for the rerun should be the same")
|
|
|
|
def save_initial(self):
|
|
pass
|
|
|
|
def save(self, *args, **kwargs):
|
|
if self.initial is not None:
|
|
self.initial = self.initial.get_initial()
|
|
if self.initial == self:
|
|
self.initial = None
|
|
|
|
if self.is_rerun:
|
|
self.save_rerun()
|
|
else:
|
|
self.save_initial()
|
|
super().save(*args, **kwargs)
|