Problem is solved, see end of posting.

Hi there,

i try to build a total price in product.product, depending on sub products defined in model bundle.product. Adding or changing a sub product i want to calculate and refresh the total price. I didn't know how to trigger the event to recalculate the total price. There is a one2Many relation between product.product and bundle.product

Thank you in advance,

Kind regards, Franz

This is my code:

from odoo import models, fields, api

class productProduct(models.Model):
    _inherit = 'product.product'
    bundle_product = fields.Boolean(string="Is Bundle Product ?")
    bundle_product_ids = fields.One2many('bundle.product', 'prod_id', string="Bundle Products")
    
    @api.depends('bundle_product_ids.tm_sum')
    def _change_lst_price(self):
        lst_price = 0.0
        for line in self.bundle_product_ids:
            lst_price += line.tm_sum

class bundleProduct(models.Model):
    _name = "bundle.product"
    name = fields.Many2one('product.product', string="Name")
    prod_id = fields.Many2one('product.product', string="Product Id")
    quantity = fields.Integer(string="Quantity", default="0")
    unit_id = fields.Many2one('product.uom', 'Unit of Measure ')
    tm_price = fields.Float(string="Preis")
    tm_sum = fields.Float(string="Summe")

    @api.model
    def create(self, vals):
        if vals.get('name'):
            prod_obj = self.env['product.product'].browse(vals.get('name'))
            vals.update({'unit_id': prod_obj.uom_id.id})
        return super(bundleProduct, self).create(vals)

    @api.onchange('name')
    def _onchange_name(self):
        product = self.name
        if not self.name:
            self.tm_price = 0.0
            return
        else:
            self.tm_price = product.list_price
            self.unit_id = product.uom_id
            print('Test: Preis wurde gesetzt!')
            return

    @api.onchange('quantity', 'tm_price')
    def _onchange_quantity(self):
        self.tm_sum = self.tm_price * self.quantity
        print('Test: Menge/ Preis wurde geändert!')
        return

class bundleProductTask(models.Model):
    _inherit = "project.task"
    bundle_product_id = fields.Many2one('bundle.product')

    @api.onchange('sale_line_id')
    def onchange_sale_line_id(self):
        bundle_product_ids = self.env['bundle.product'].search([('prod_id', '=', self.sale_line_id.product_id.id)])
        return {'domain': {'bundle_product_id': [('id', 'in', bundle_product_ids.ids)]}}

and this my view for sub product

<record model="ir.ui.view" id="product_product_inherit_form">
   <field name="name">product_product_inherit</field>
   <field name="model">product.product</field>
   <field name="inherit_id" ref="product.product_normal_form_view" />
   <field name="arch" type="xml">

      <xpath expr="//field[@name='sale_ok']" position="before">
         <field name="bundle_product" />
         <label for="bundle_product" />
         <br></br>
      </xpath>

      <xpath expr="//field[@name='lst_price']" position="replace">
         <field name="lst_price" readonly="True" widget="monetary" />
      </xpath>

      <xpath expr="//form/sheet/notebook" position="inside">
         <page string="Bundle Product" attrs="{'invisible': [('bundle_product', '=', False)]}">
            <field name="bundle_product_ids" nolabel="1" colspan="1">
               <tree string="Bundle" editable="bottom">
                  <field name="name" required="True"/>
                  <field name="quantity" required="True"/>
                  <field name="unit_id" readonly="True" invisible="0"/>
                  <field name="tm_price" widget="monetary"/>
                  <field name="tm_sum"  widget="monetary"/>
               </tree>
            </field>
            <group>
               <field name="lst_price" colspan="1"/>
            </group>
         </page>
      </xpath>
   </field>
</record>

#This function did the job for me:
@api.onchange('bundle_product_ids')
def _calculate_total(self):
    bundle = self.bundle_product_ids
    self.lst_price = 0.0
    
    for each in bundle:
        self.lst_price += each.tm_sum

instead of:
    @api.depends('bundle_product_ids.tm_sum')
    def _change_lst_price(self):
        lst_price = 0.0
        for line in self.bundle_product_ids:
            lst_price += line.tm_sum