Add support for max_qty in purchase_suggest

purchase_suggest_min_qty_on_product/product.py

@@ -20,8 +20,10 @@
 #
 ##############################################################################
 
-from openerp import models, fields
+from openerp import models, fields, api, _
 import openerp.addons.decimal_precision as dp
+from openerp.tools import float_compare, float_is_zero
+from openerp.exceptions import ValidationError
 
 
 class ProductProduct(models.Model):
@@ -34,3 +36,28 @@ class ProductProduct(models.Model):
         help="If the forecast quantity is lower than the value of this field, "
         "Odoo will suggest to re-order this product. This field is in the "
         "unit of measure of the product.")
+    max_qty = fields.Float(
+        string=u'Maximum Quantity', track_visibility='onchange',
+        digits=dp.get_precision('Product Unit of Measure'),
+        company_dependent=True,
+        help="If the forecast quantity is lower than the value of the minimum "
+        " quantity, Odoo will suggest to re-order this product to go up to "
+        "the maximum quantity. This field is in the unit of measure of the "
+        "product.")
+
+    @api.constrains('min_qty', 'max_qty')
+    def check_min_max_qty(self):
+        precision = self.env['decimal.precision'].precision_get(
+            'Product Unit of Measure')
+        for product in self:
+            if (
+                    not float_is_zero(
+                        product.max_qty, precision_digits=precision) and
+                    float_compare(
+                        product.max_qty, product.min_qty,
+                        precision_digits=precision) != 1):
+                raise ValidationError(_(
+                    "On product '%s', the maximum quantity (%s) is lower "
+                    "than the minimum quantity (%s).") % (
+                    product.name_get()[0][1],
+                    product.max_qty, product.min_qty))

purchase_suggest_min_qty_on_product/product_view.xml

@@ -29,6 +29,7 @@
         <field name="virtual_available" position="after">
             <separator name="min_qty" colspan="2"/>
             <field name="min_qty"/>
+            <field name="max_qty"/>
         </field>
     </field>
 </record>

purchase_suggest_min_qty_on_product/wizard/purchase_suggest.py

@@ -44,7 +44,8 @@ class PurchaseSuggestionGenerate(models.TransientModel):
 
     @api.model
     def generate_products_dict(self):
-        '''inherit the native method to use min_qty on product.product'''
+        '''inherit the native method to use min_qty/max_qty on
+        product.product'''
         ppo = self.env['product.product']
         products = {}
         product_domain = self._prepare_product_domain()
@@ -56,6 +57,7 @@ class PurchaseSuggestionGenerate(models.TransientModel):
             # So we remove "if product.z_stock_min > 0"
             products[product.id] = {
                 'min_qty': product.min_qty,
+                'max_qty': product.max_qty,
                 'draft_po_qty': 0.0,  # This value is set later on
                 'orderpoint': False,
                 'product': product,