Display detail about a passage

apps/participation/models.py

@@ -340,6 +340,13 @@ class Passage(models.Model):
         default="Non indiqué",
     )
 
+    solution_number = models.PositiveSmallIntegerField(
+        verbose_name=_("defended solution"),
+        choices=[
+            (i, format_lazy(_("Problem #{problem}"), problem=i)) for i in range(1, settings.PROBLEM_COUNT + 1)
+        ],
+    )
+
     defender = models.ForeignKey(
         Participation,
         on_delete=models.PROTECT,
@@ -361,6 +368,16 @@ class Passage(models.Model):
         related_name="+",
     )
 
+    @property
+    def defended_solution(self) -> "Solution":
+        return Solution.objects.get(
+            participation=self.defender,
+            problem=self.solution_number,
+            final_solution=self.pool.tournament.final)
+
+    def get_absolute_url(self):
+        return reverse_lazy("participation:passage_detail", args=(self.pk,))
+
     def clean(self):
         if self.defender not in self.pool.participations.all():
             raise ValidationError(_("Team {trigram} is not registered in the pool.")
@@ -373,6 +390,10 @@ class Passage(models.Model):
                                   .format(trigram=self.reporter.team.trigram))
         return super().clean()
 
+    def __str__(self):
+        return _("Passage of {defender} for problem {problem}")\
+            .format(defender=self.defender.team, problem=self.solution_number)
+
     class Meta:
         verbose_name = _("passage")
         verbose_name_plural = _("passages")