Upgrades to cost calculation methods

alembic/versions/83b06f3f4869_updated_discount_table.py

@@ -0,0 +1,30 @@
+"""updated discount table
+
+Revision ID: 83b06f3f4869
+Revises: cc9672a505f5
+Create Date: 2023-04-27 13:04:35.886294
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import sqlite
+
+# revision identifiers, used by Alembic.
+revision = '83b06f3f4869'
+down_revision = 'cc9672a505f5'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('_discounts', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('name', sa.String(length=128), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('_discounts', schema=None) as batch_op:
+        batch_op.drop_column('name')
+    # ### end Alembic commands ###