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from django.db import models
from rest_framework import serializers
from backend_app.models.abstract.module import Module, ModuleSerializer, ModuleViewSet
from backend_app.models.university import University
from backend_app.permissions.moderation import ModerationLevels
def semester_error(semester_name):
raise serializers.ValidationError(
"Inconsistent {} semester dates".format(semester_name)
)
class UniversitySemestersDates(Module):
moderation_level = ModerationLevels.DEPENDING_ON_SITE_SETTINGS
university = models.OneToOneField(
University,
on_delete=models.PROTECT,
related_name="university_semesters_dates",
primary_key=True,
null=False,
)
spring_begin = models.DateField(null=True, blank=True)
spring_end = models.DateField(null=True, blank=True)
autumn_begin = models.DateField(null=True, blank=True)
autumn_end = models.DateField(null=True, blank=True)
class UniversitySemestersDatesSerializer(ModuleSerializer):
def validate(self, attrs):
attrs = super().validate(attrs)
s_b, s_e = attrs["spring_begin"], attrs["spring_end"]
a_b, a_e = attrs["autumn_begin"], attrs["autumn_end"]
def test(begin, end, name):
ok = (begin is None and end is None) or (
begin is not None and end is not None
)
if not ok:
semester_error(name)
if begin is not None and (begin > end):
semester_error(name)
test(s_b, s_e, "spring")
test(a_b, a_e, "autumn")
return attrs
class Meta:
model = UniversitySemestersDates
fields = ModuleSerializer.Meta.fields + (
"university",
"spring_begin",
"spring_end",
"autumn_begin",
"autumn_end",
)
class UniversitySemestersDatesViewSet(ModuleViewSet):
permission_classes = ModuleViewSet.permission_classes
queryset = UniversitySemestersDates.objects.all() # pylint: disable=E1101
serializer_class = UniversitySemestersDatesSerializer
end_point_route = "universitiesSemestersDates"
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