Initial import from Docker volume

modules/product_month/product.py

@@ -0,0 +1,30 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from trytond.model import fields
+from trytond.pool import Pool, PoolMeta
+from trytond.pyson import Bool, Eval, Id
+from trytond.model import (ModelSQL, ModelView)
+
+class Template(metaclass=PoolMeta):
+    __name__ = 'product.template'
+
+    month = fields.One2Many('product.product.month', 'product', 
+        "Period")
+
+class Product(metaclass=PoolMeta):
+    __name__ = 'product.product'
+
+class Month(ModelView, ModelSQL):
+    "Month"
+    __name__ = 'product.month'
+    _rec_name = 'month_name'
+    month_name = fields.Char("Month")
+    is_cotation = fields.Boolean("Cotation month")
+    beg_date = fields.Date("Date from")
+    end_date = fields.Date("Date end")
+
+class ProductMonth(ModelView, ModelSQL):
+    "Product month"
+    __name__ = 'product.product.month'
+    product = fields.Many2One('product.product',"Product")
+    month = fields.Many2One('product.month',"Month")