[FIX] sale_order_product_availability_online: Display the quantity for templates + fix for variants

Display correctly the quantity even if product template has been displayed instead of variant.

Don't add the quantity if the product name is used in line description
since odoo/odoo@c84b67e

Author: rousseldenis

sale_order_product_availability_inline/models/__init__.py

@@ -1,3 +1,4 @@
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
 from . import product_product
+from . import product_template
 from . import sale

sale_order_product_availability_inline/models/product_template.py

@@ -0,0 +1,32 @@
+# Copyright 2020 Tecnativa - Ernesto Tejeda
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import models
+
+
+class ProductTemplate(models.Model):
+    _inherit = "product.template"
+
+    def _compute_display_name(self):
+        res = super()._compute_display_name()
+        if self.env.context.get("so_product_stock_inline"):
+            self = self.with_context(warehouse=self.env.context.get("warehouse"))
+            availability = {
+                r.id: [
+                    sum(p.free_qty for p in r.product_variant_ids),
+                    r.uom_id.display_name,
+                ]
+                for r in self
+            }
+            precision = self.env["decimal.precision"].precision_get(
+                "Product Unit of Measure"
+            )
+            for record in self:
+                name = "{} ({:.{}f} {})".format(
+                    record.display_name,
+                    availability[record.id][0],
+                    precision,
+                    availability[record.id][1],
+                )
+                record.display_name = name
+        return res

sale_order_product_availability_inline/models/sale.py

@@ -12,3 +12,8 @@ def _compute_name(self):
         if self.env.context.get("so_product_stock_inline"):
             self = self.with_context(so_product_stock_inline=False)
         return super()._compute_name()
+
+    def _compute_translated_product_name(self):
+        if self.env.context.get("so_product_stock_inline"):
+            self = self.with_context(so_product_stock_inline=False)
+        return super()._compute_translated_product_name()

sale_order_product_availability_inline/views/sale_views.xml

@@ -15,6 +15,16 @@
                     "warehouse": parent.warehouse_id}
                 </attribute>
             </xpath>
+
+            <xpath
+                expr="//field[@name='order_line']/list//field[@name='product_template_id']"
+                position="attributes"
+            >
+                <attribute name="context" operation="update">
+                    {"so_product_stock_inline": True,
+                    "warehouse": parent.warehouse_id}
+                </attribute>
+            </xpath>
             <xpath
                 expr="//field[@name='order_line']/form//field[@name='product_id']"
                 position="attributes"