From 42f2065920c806c214f93f87a6da0b34b14e55b5 Mon Sep 17 00:00:00 2001
From: Rebecca Law <rebecca.law@digital.cabinet-office.gov.uk>
Date: Thu, 25 Feb 2016 15:16:00 +0000
Subject: [PATCH] Migration file to add unique constraint on user_to_service.

---
 .../versions/0024_uix_user_to_service.py      | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 migrations/versions/0024_uix_user_to_service.py

diff --git a/migrations/versions/0024_uix_user_to_service.py b/migrations/versions/0024_uix_user_to_service.py
new file mode 100644
index 000000000..63b131c68
--- /dev/null
+++ b/migrations/versions/0024_uix_user_to_service.py
@@ -0,0 +1,26 @@
+"""empty message
+
+Revision ID: 0024_uix_user_to_service
+Revises: 0023_drop_token
+Create Date: 2016-02-25 11:15:06.088508
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '0024_uix_user_to_service'
+down_revision = '0023_drop_token'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    ### commands auto generated by Alembic - please adjust! ###
+    op.create_unique_constraint('uix_user_to_service', 'user_to_service', ['user_id', 'service_id'])
+    ### end Alembic commands ###
+
+
+def downgrade():
+    ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint('uix_user_to_service', 'user_to_service', type_='unique')
+    ### end Alembic commands ###