如何在更新树视图的字段时更新查看字段的值？

Question

如何在更新树视图的字段时更新来自视图的字段的值？

我想在更新“location_qty”的值时更改“total_location_qty”的值。

这是我的OBJ

class Demo(models.TransientModel): 
    _name = 'demo.parent' 

    demo_lines_ids = fields.One2many('demo.lines', 'demo_id', 'demo Items') 
    total_location_qty = fields.Float(string='Total of location qty') 


class DemoLines(models.TransientModel): 
    _name = "demo.lines" 

    demo_id = fields.Many2one('demo.parent', 'Demo') 
    location_id = fields.Many2one('stock.location', 'Stock Location', readonly=True) 
    location_qty = fields.Float(string='Location Qty') 

    @api.onchange('location_qty') 
    def on_change_location_qty(self): 
     self.demo_id.total_location_qty = self.location_qty 

这是我的看法

<record id="view_demo_wizard" model="ir.ui.view"> 
    <field name="name">Demo</field> 
     <field name="model">demo.parent</field> 
     <field name="arch" type="xml"> 
      <form string="Demo Parent"> 
     <group string="Demo"> 
     <group colspan="4"> 
        <field name="total_location_qty" readonly="1"/> 
       </group> 
     <field name="demo_lines_ids" nolabel="1" > 
      <tree string="Demo Lines" editable="bottom" create="false" delete="false" > 
      <field name="location_qty"/> 
      </tree> 
       </field> 
      </group> 
     </form> 
     </field> 
</record> 

Answer 1

我解决了如下

参考：帐号/ account_invoice.py（会计 - >客户发票或客户退款或供应商退款）

class Demo(models.TransientModel): 
    _name = 'demo.parent' 

    @api.one 
    @api.depends('manual_pick_lines_ids.qty_pick_base_uom') 
    def _compute_total_amount(self): 
     self.total_amount = sum(line.line_total_amount for line in self.demo_lines_ids) 

    demo_lines_ids = fields.One2many('demo.lines', 'demo_id', 'demo Items') 
    total_amount = fields.Float(string='Total Amount', store=True, compute='_compute_total_amount') 


class DemoLines(models.TransientModel): 
    _name = "demo.lines" 

    @api.one 
    @api.depends('price', 'qty') 
    def _compute_amount(self): 
     self.line_total_amount = self.qty * self.price 

    demo_id = fields.Many2one('demo.parent', 'Demo') 
    location_id = fields.Many2one('stock.location', 'Stock Location', readonly=True) 
    qty = fields.Float(string='Qty') 
    price = fields.Float(string='Price') 
    line_total_amount = fields.Float(string='Location Qty', compute='_compute_amount', store=True)