When we create the product(real and virtual) and computes the stock value and quantity of product in stock and validate than the product(real and virtual) is also maintained in the stock and updated in warehouse and also returns the dictionary of values in stock.

Use this function given below

def productvalue(self, cr, uid, ids, field_names, arg, context=None):
        prod_id = context and context.get('product_id', False)
        if not prod_id:
            return dict([(i, {}.fromkeys(field_names, 0.0)) for i in ids])
        product_product_obj = self.pool.get('product.product')

        cr.execute('select distinct product_id, location_id from stock_move where location_id in %s', (tuple(ids), ))
        dict1 = cr.dictfetchall()
        cr.execute('select distinct product_id, location_dest_id as location_id from stock_move where location_dest_id in %s', (tuple(ids), ))
        dict2 = cr.dictfetchall()
        res_products_by_location = sorted(dict1+dict2, key=itemgetter('location_id'))
        products_by_location = dict((k, [v['product_id'] for v in itr]) for k, itr in groupby(res_products_by_location, itemgetter('location_id')))

        result = dict([(i, {}.fromkeys(field_names, 0.0)) for i in ids])
        result.update(dict([(i, {}.fromkeys(field_names, 0.0)) for i in list(set([aaa['location_id'] for aaa in res_products_by_location]))]))

        currency_id = self.pool.get('res.users').browse(cr, uid, uid).company_id.currency_id.id
        currency_obj = self.pool.get('res.currency')
        currency = currency_obj.browse(cr, uid, currency_id, context=context)
        for loc_id, product_ids in products_by_location.items():
            if prod_id:
                product_ids = [prod_id]
            c = (context or {}).copy()
            c['location'] = loc_id
            for prod in product_product_obj.browse(cr, uid, product_ids, context=c):
                for f in field_names:
                    if f == 'stock_real':
                        if loc_id not in result:
                            result[loc_id] = {}
                        result[loc_id][f] += prod.qty_available
                    elif f == 'stock_virtual':
                        result[loc_id][f] += prod.virtual_available
                    elif f == 'stock_real_value':
                        amount = prod.qty_available * prod.standard_price
                        amount = currency_obj.round(cr, uid, currency, amount)
                        result[loc_id][f] += amount
                    elif f == 'stock_virtual_value':
                        amount = prod.virtual_available * prod.standard_price
                        amount = currency_obj.round(cr, uid, currency, amount)
                        result[loc_id][f] += amount
        return result