Add problem volunteer

judge/models/volunteer.py

@@ -0,0 +1,28 @@
+from django.db import models
+from django.db.models import CASCADE
+from django.utils.translation import gettext_lazy as _
+
+from judge.models import Profile, Problem, ProblemType
+
+__all__ = ['VolunteerProblemVote']
+
+class VolunteerProblemVote(models.Model):
+    voter = models.ForeignKey(Profile, related_name='volunteer_problem_votes', on_delete=CASCADE)
+    problem = models.ForeignKey(Problem, related_name='volunteer_user_votes', on_delete=CASCADE)
+    time = models.DateTimeField(auto_now_add=True)
+    knowledge_points = models.PositiveIntegerField(verbose_name=_('knowledge points'),
+                                                   help_text=_('Points awarded by knowledge difficulty'))
+    thinking_points = models.PositiveIntegerField(verbose_name=_('thinking points'),
+                                                  help_text=_('Points awarded by thinking difficulty'))
+    types = models.ManyToManyField(ProblemType, verbose_name=_('problem types'),
+                                   help_text=_('The type of problem, '
+                                               "as shown on the problem's page."))
+    feedback = models.TextField(verbose_name=_('feedback'), blank=True)
+
+    class Meta:
+        verbose_name = _('volunteer vote')
+        verbose_name_plural = _('volunteer votes')
+        unique_together = ['voter', 'problem']
+
+    def __str__(self):
+        return f'{self.voter} for {self.problem.code}'