85 lines
2.7 KiB
Python
85 lines
2.7 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, blank=True)
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end = models.DateTimeField(null=True, blank=True, db_index=True)
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title = models.CharField(default="", max_length=1024)
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learning_content_description = models.CharField(
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default="", blank=True, max_length=1024
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)
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description = models.CharField(default="", blank=True, max_length=1024)
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url = models.CharField(default="", 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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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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help = "The start date is mandatory. You can set the end date if you want to have a deadline with a duration."
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def __str__(self):
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if self.is_undefined:
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return f"DueDate: {self.title} undefined"
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start_str = self.start.strftime("%Y-%m-%d %H:%M") if self.start else "-"
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result = f"DueDate: {self.title} {start_str}"
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if self.end:
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end_str = self.end.strftime("%Y-%m-%d %H:%M") if self.end else "-"
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result += f" - {end_str}"
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return result
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@property
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def is_undefined(self):
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return self.start is None
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@property
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def duration(self):
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if self.end 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(
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cls, user: User, course_session: CourseSession = None, limit=10
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):
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"""
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Returns a queryset of all due dates that are relevant for the given user.
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If course_session is given, only due dates 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_due_dates_qs()
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if course_session:
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qs = qs.filter(
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course_session=course_session,
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course_session__course_assignment__user=user,
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)
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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_due_dates_qs(cls):
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now = timezone.now()
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qs = cls.objects.filter(start__gte=now)
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return qs
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