1 files changed, 19 insertions, 0 deletions
diff --git a/models.py b/models.py
index de14b43..d78e12b 100644
--- a/models.py
+++ b/models.py
@@ -176,3 +176,22 @@ class Course(models.Model):
     class Meta:
         verbose_name = "cours"
         verbose_name_plural = "cours"
+
+
+class CourseDelta(models.Model):
+    ADDED = 0
+    DELETED = 1
+    OPERATION_CHOICE = (
+        (ADDED, "Ajouté"),
+        (DELETED, "Supprimé"),
+    )
+
+    course = models.ForeignKey(Course, verbose_name="cours")
+    update = models.ForeignKey(LastUpdate, verbose_name="mise à jour")
+    operation = models.IntegerField(choices=OPERATION_CHOICE, default=ADDED, verbose_name="type de modification")
+
+
+    class Meta:
+        unique_together = ("course", "update",)
+        verbose_name = "modification de cours"
+        verbose_name_plural = "modifications de cours"