Add Alias.transfer_token col

app/models.py

@@ -1003,6 +1003,9 @@ class Alias(db.Model, ModelMixin):
     # alias is pinned on top
     pinned = db.Column(db.Boolean, nullable=False, default=False, server_default="0")
 
+    # used to transfer an alias to another user
+    transfer_token = db.Column(db.String(64), default=None, unique=True, nullable=True)
+
     user = db.relationship(User, foreign_keys=[user_id])
     mailbox = db.relationship("Mailbox", lazy="joined")
 

migrations/versions/2021_030618_51bd435bd5cc_.py

@@ -0,0 +1,31 @@
+"""empty message
+
+Revision ID: 51bd435bd5cc
+Revises: e831a883153a
+Create Date: 2021-03-06 18:05:34.252719
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '51bd435bd5cc'
+down_revision = 'e831a883153a'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('alias', sa.Column('transfer_token', sa.String(length=64), nullable=True))
+    op.create_unique_constraint(None, 'alias', ['transfer_token'])
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'alias', type_='unique')
+    op.drop_column('alias', 'transfer_token')
+    # ### end Alembic commands ###