add Coupon.is_giveaway column

app/models.py

@@ -1917,6 +1917,10 @@ class Coupon(db.Model, ModelMixin):
         db.ForeignKey(User.id, ondelete="cascade"), nullable=True
     )
 
+    is_giveaway = db.Column(
+        db.Boolean, default=False, nullable=False, server_default="0"
+    )
+
 
 class Directory(db.Model, ModelMixin):
     user_id = db.Column(db.ForeignKey(User.id, ondelete="cascade"), nullable=False)

migrations/versions/2021_090715_916a5257d18c_.py

@@ -0,0 +1,29 @@
+"""empty message
+
+Revision ID: 916a5257d18c
+Revises: 424808e1fe49
+Create Date: 2021-09-07 15:35:35.430202
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '916a5257d18c'
+down_revision = '424808e1fe49'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('coupon', sa.Column('is_giveaway', sa.Boolean(), server_default='0', nullable=False))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('coupon', 'is_giveaway')
+    # ### end Alembic commands ###