支持供应商简称维护和订单PDF下载命名

po_app/migrations.py

@@ -14,7 +14,7 @@ def upgrade_database(path):
         if 'orders' not in tables:
             return
         version = con.execute('PRAGMA user_version').fetchone()[0]
-        if version >= 4:
+        if version >= 5:
             return
         duplicates = con.execute('SELECT order_no, COUNT(*) FROM orders GROUP BY order_no HAVING COUNT(*) > 1').fetchall()
         if duplicates:
@@ -28,8 +28,13 @@ def upgrade_database(path):
                 upgrade_fixed_amounts(con)
             if version < 3:
                 merge_approval(con, tables)
-            add_tracking(con)
-            con.execute('PRAGMA user_version=4')
+            if version < 4:
+                add_tracking(con)
+            if 'suppliers' in tables:
+                columns = {row[1] for row in con.execute('PRAGMA table_info(suppliers)')}
+                if 'short_name' not in columns:
+                    con.execute("ALTER TABLE suppliers ADD COLUMN short_name VARCHAR(60) NOT NULL DEFAULT ''")
+            con.execute('PRAGMA user_version=5')
             con.commit()
         except Exception:
             con.rollback()