Add Customer.number field to schema

for those who want a proper integer key on the customer table

rattail/db/alembic/versions/195ceb6abeb3_add_customer_number.py

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+"""add customer number
+
+Revision ID: 195ceb6abeb3
+Revises: 6a1ec8b93637
+Create Date: 2017-05-11 11:29:13.525277
+
+"""
+
+from __future__ import unicode_literals
+
+# revision identifiers, used by Alembic.
+revision = '195ceb6abeb3'
+down_revision = u'6a1ec8b93637'
+branch_labels = None
+depends_on = None
+
+from alembic import op
+import sqlalchemy as sa
+import rattail.db.types
+from sqlalchemy.dialects import postgresql
+
+
+def upgrade():
+
+    # customer
+    op.add_column('customer', sa.Column('number', sa.Integer(), nullable=True))
+
+
+def downgrade():
+
+    # customer
+    op.drop_column('customer', 'number')

rattail/db/model/customers.py

@@ -47,7 +47,17 @@ class Customer(Base):
     __versioned__ = {}
 
     uuid = uuid_column()
-    id = sa.Column(sa.String(length=20))
+
+    id = sa.Column(sa.String(length=20), nullable=True, doc="""
+    String ID for the customer, if known/relevant.  This may or may not
+    correspond to the :attr:`number`, depending on your system.
+    """)
+
+    number = sa.Column(sa.Integer(), nullable=True, doc="""
+    Customer number, if known/relevant.  This may or may not correspond to the
+    :attr:`id`, depending on your system.
+    """)
+
     name = sa.Column(sa.String(length=255))
     email_preference = sa.Column(sa.Integer())