migration script

migrations/versions/2020_091211_b0e9a389939a_.py

@@ -0,0 +1,31 @@
+"""empty message
+
+Revision ID: b0e9a389939a
+Revises: 84471852b610
+Create Date: 2020-09-12 11:18:40.262432
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'b0e9a389939a'
+down_revision = '84471852b610'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('users', sa.Column('newsletter_alias_id', sa.Integer(), nullable=True))
+    op.create_foreign_key(None, 'users', 'alias', ['newsletter_alias_id'], ['id'], ondelete='SET NULL')
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'users', type_='foreignkey')
+    op.drop_column('users', 'newsletter_alias_id')
+    # ### end Alembic commands ###