backup for restore later

backup-api-standard-v1/backend/igny8_core/auth/migrations/0009_fix_admin_log_user_fk.py

@@ -0,0 +1,88 @@
+from django.db import migrations
+
+
+def forward_fix_admin_log_fk(apps, schema_editor):
+    if schema_editor.connection.vendor != "postgresql":
+        return
+    schema_editor.execute(
+        """
+        ALTER TABLE django_admin_log
+        DROP CONSTRAINT IF EXISTS django_admin_log_user_id_c564eba6_fk_auth_user_id;
+        """
+    )
+    schema_editor.execute(
+        """
+        UPDATE django_admin_log
+        SET user_id = sub.new_user_id
+        FROM (
+            SELECT id AS new_user_id
+            FROM igny8_users
+            ORDER BY id
+            LIMIT 1
+        ) AS sub
+        WHERE django_admin_log.user_id NOT IN (
+            SELECT id FROM igny8_users
+        );
+        """
+    )
+    schema_editor.execute(
+        """
+        DO $$
+        BEGIN
+            IF NOT EXISTS (
+                SELECT 1 FROM pg_constraint 
+                WHERE conname = 'django_admin_log_user_id_c564eba6_fk_igny8_users_id'
+            ) THEN
+                ALTER TABLE django_admin_log
+                ADD CONSTRAINT django_admin_log_user_id_c564eba6_fk_igny8_users_id
+                FOREIGN KEY (user_id) REFERENCES igny8_users(id) DEFERRABLE INITIALLY DEFERRED;
+            END IF;
+        END $$;
+        """
+    )
+
+
+def reverse_fix_admin_log_fk(apps, schema_editor):
+    if schema_editor.connection.vendor != "postgresql":
+        return
+    schema_editor.execute(
+        """
+        ALTER TABLE django_admin_log
+        DROP CONSTRAINT IF EXISTS django_admin_log_user_id_c564eba6_fk_igny8_users_id;
+        """
+    )
+    schema_editor.execute(
+        """
+        UPDATE django_admin_log
+        SET user_id = sub.old_user_id
+        FROM (
+            SELECT id AS old_user_id
+            FROM auth_user
+            ORDER BY id
+            LIMIT 1
+        ) AS sub
+        WHERE django_admin_log.user_id NOT IN (
+            SELECT id FROM auth_user
+        );
+        """
+    )
+    schema_editor.execute(
+        """
+        ALTER TABLE django_admin_log
+        ADD CONSTRAINT django_admin_log_user_id_c564eba6_fk_auth_user_id
+        FOREIGN KEY (user_id) REFERENCES auth_user(id) DEFERRABLE INITIALLY DEFERRED;
+        """
+    )
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("igny8_core_auth", "0008_passwordresettoken_alter_industry_options_and_more"),
+    ]
+
+    operations = [
+        migrations.RunPython(forward_fix_admin_log_fk, reverse_fix_admin_log_fk),
+    ]
+
+