[FIX] mrp: open component quantity for kit

The 'On Hand' button triggers action_open_quants on product model. It
do not explode the kit into its component

closes odoo/odoo#62390

X-original-commit: 49b965eb1ec6a7ec6c07fa643cc6ae35ee8b5d91
Signed-off-by: William Henrotin <Whenrow@users.noreply.github.com>

addons/mrp/models/product.py

@@ -205,3 +205,18 @@ class ProductProduct(models.Model):
         action = self.product_tmpl_id.action_view_mos()
         action['domain'] = [('state', '=', 'done'), ('product_id', 'in', self.ids)]
         return action
+
+    def action_open_quants(self):
+        bom_kits = {}
+        for product in self:
+            bom = self.env['mrp.bom']._bom_find(product=product, bom_type='phantom')
+            if bom:
+                bom_kits[product] = bom
+        components = self - self.env['product.product'].concat(*list(bom_kits.keys()))
+        for product in bom_kits:
+            boms, bom_sub_lines = bom_kits[product].explode(product, 1)
+            components |= self.env['product.product'].concat(*[l[0].product_id for l in bom_sub_lines])
+        res = super(ProductProduct, components).action_open_quants()
+        if bom_kits:
+            res['context']['single_product'] = False
+        return res

addons/stock/models/product.py

@@ -484,7 +484,7 @@ class Product(models.Model):
                 single_product=True
             )
         else:
-            self = self.with_context(product_tmpl_id=self.product_tmpl_id.id)
+            self = self.with_context(product_tmpl_ids=self.product_tmpl_id.ids)
         action = self.env['stock.quant']._get_quants_action(domain)
         action["name"] = _('Update Quantity')
         return action

addons/stock/models/stock_quant.py

@@ -45,8 +45,9 @@ class StockQuant(models.Model):
         if not self._is_inventory_mode():
             return
         domain = [('type', '=', 'product')]
-        if self.env.context.get('product_tmpl_id'):
-            domain = expression.AND([domain, [('product_tmpl_id', '=', self.env.context['product_tmpl_id'])]])
+        if self.env.context.get('product_tmpl_ids') or self.env.context.get('product_tmpl_id'):
+            products = self.env.context.get('product_tmpl_id', []) + [self.env.context.get('product_tmpl_id', 0)]
+            domain = expression.AND([domain, [('product_tmpl_id', 'in', products)]])
         return domain
 
     product_id = fields.Many2one(