70 lines
2.2 KiB
Python
70 lines
2.2 KiB
Python
import datetime
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from django.db import models
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from django.utils import timezone
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from django.utils.translation import gettext_lazy as _
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from wagtail.models import Page
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from vbv_lernwelt.core.models import User
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from vbv_lernwelt.course.models import CourseSession
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class DueDate(models.Model):
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start = models.DateTimeField(null=True, db_index=True)
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end = models.DateTimeField(db_index=True, null=True)
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title = models.CharField(default=_('Termin'), max_length=1024)
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url = models.URLField(null=True, blank=True, max_length=1024)
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course_session = models.ForeignKey(
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'course.CourseSession',
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on_delete=models.CASCADE,
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related_name='events',
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null=True,
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blank=True,
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)
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page = models.ForeignKey(Page, on_delete=models.SET_NULL, null=True, blank=True)
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def Meta(self):
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ordering = ['start', 'end']
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verbose_name = _("Termin")
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def __str__(self):
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start_str = self.start.strftime('%Y-%m-%d %H:%M') if self.start else ''
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end_str = self.end.strftime('%Y-%m-%d %H:%M') if self.end else ''
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return f"DueDate: {self.title} {start_str} to {end_str}"
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@property
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def unset(self):
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return self.end is None
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@property
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def duration(self):
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if self.start is None:
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return datetime.timedelta(0)
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return self.end - self.start
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@classmethod
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def get_users_next_events_qs(cls, user: User, course_session: CourseSession = None, limit=10):
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"""
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Returns a queryset of all duedates that are relevant for the given user. Ordered nearest start date first.
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If course_session is given, only duedates for that course_session are returned.
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The user is determined by via a course session user of a course_assignment.
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"""
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qs = cls.get_next_duedates_qs()
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if course_session:
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qs = qs.filter(course_session=course_session, course_session__course_assignment__user=user)
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else:
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qs = qs.filter(course_session__course_assignment__user=user)
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qs = qs.order_by('start')[:limit]
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return qs
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@classmethod
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def get_next_duedates_qs(cls):
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now = timezone.now()
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qs = cls.objects.filter(end__gte=now)
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return qs
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