Source code for oioioi.problemsharing.models

from django.contrib.auth.models import User
from django.db import models
from django.utils.translation import gettext_lazy as _

from oioioi.base.utils.deps import check_django_app_dependencies

check_django_app_dependencies(__name__, ['oioioi.teachers'])


class Friendship(models.Model):
    """Represents a friendship between task creators

    Friends can access user uploaded problems. Friendship is one-sided.
    """

    # "creator" created the friendship (want's their problems to be shared)
    creator = models.ForeignKey(
        User,
        on_delete=models.CASCADE,
        verbose_name=_("creator"),
        related_name='friendships_created',
    )
    # "receiver" gets access to problems of "creator"
    receiver = models.ForeignKey(
        User,
        on_delete=models.CASCADE,
        verbose_name=_("receiver"),
        related_name='friendships_received',
    )

    class Meta:
        unique_together = ('creator', 'receiver')