From 9f45f1ee719c8d51f3d2fe89e982b3b5e36625b4 Mon Sep 17 00:00:00 2001
From: Emmanuel Viennet <emmanuel.viennet@gmail.com>
Date: Wed, 15 Mar 2023 19:13:45 +0100
Subject: [PATCH] Fix cascade sur modimpl/abs

---
 app/models/absences.py                        |  4 +-
 .../6520faf67508_fix_cascade_abs_mod.py       | 43 +++++++++++++++++++
 2 files changed, 44 insertions(+), 3 deletions(-)
 create mode 100644 migrations/versions/6520faf67508_fix_cascade_abs_mod.py

diff --git a/app/models/absences.py b/app/models/absences.py
index e4bbd823d0..d31d9e270e 100644
--- a/app/models/absences.py
+++ b/app/models/absences.py
@@ -24,10 +24,8 @@ class Absence(db.Model):
     # moduleimpid concerne (optionnel):
     moduleimpl_id = db.Column(
         db.Integer,
-        db.ForeignKey("notes_moduleimpl.id"),
+        db.ForeignKey("notes_moduleimpl.id", ondelete="SET NULL"),
     )
-    # XXX TODO: contrainte ajoutée: vérifier suppression du module
-    # (mettre à NULL sans supprimer)
 
     def to_dict(self):
         data = {
diff --git a/migrations/versions/6520faf67508_fix_cascade_abs_mod.py b/migrations/versions/6520faf67508_fix_cascade_abs_mod.py
new file mode 100644
index 0000000000..9611eb76c2
--- /dev/null
+++ b/migrations/versions/6520faf67508_fix_cascade_abs_mod.py
@@ -0,0 +1,43 @@
+"""fix_cascade_abs_mod
+
+Revision ID: 6520faf67508
+Revises: 19a608ebc9b7
+Create Date: 2023-03-15 19:07:15.152610
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "6520faf67508"
+down_revision = "19a608ebc9b7"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint("absences_moduleimpl_id_fkey", "absences", type_="foreignkey")
+    op.create_foreign_key(
+        "absences_moduleimpl_id_fkey",
+        "absences",
+        "notes_moduleimpl",
+        ["moduleimpl_id"],
+        ["id"],
+        ondelete="SET NULL",
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint("absences_moduleimpl_id_fkey", "absences", type_="foreignkey")
+    op.create_foreign_key(
+        "absences_moduleimpl_id_fkey",
+        "absences",
+        "notes_moduleimpl",
+        ["moduleimpl_id"],
+        ["id"],
+    )
+    # ### end Alembic commands ###