2 files changed, 24 insertions(+), 1 deletions(-)

A metasrht/alembic/versions/2d417400aa37_add_unique_constraint_to_user_auth_.py
M metasrht/types/factors.py

@@ 0,0 1,23 @@
+"""Add unique constraint to user_auth_factor
+
+Revision ID: 2d417400aa37
+Revises: 0972ddb8d4f8
+Create Date: 2020-10-05 14:17:00.638364
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '2d417400aa37'
+down_revision = '0972ddb8d4f8'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    op.create_unique_constraint('uq_user_auth_factor_user_id',
+            'user_auth_factor', ['user_id'])
+
+
+def downgrade():
+    op.drop_constraint('uq_user_auth_factor_user_id', 'user_auth_factor')

@@ 11,7 11,7 @@ class FactorType(Enum):
 class UserAuthFactor(Base):
     __tablename__ = 'user_auth_factor'
     id = sa.Column(sa.Integer, primary_key=True)
-    user_id = sa.Column(sa.Integer, sa.ForeignKey("user.id"))
+    user_id = sa.Column(sa.Integer, sa.ForeignKey("user.id"), unique=True)
     user = sa.orm.relationship('User', backref=sa.orm.backref('auth_factors'))
     created = sa.Column(sa.DateTime, nullable=False)
     updated = sa.Column(sa.DateTime, nullable=False)