Hello guys!

I really have problem with domain for one2many field.

In the res.company form, I select some partners for the field line_of_business_ids. I save this and it works.

In the view view_partner_property_form (see below) the field line_business_ids of the partner should only offer the values available in the field line_of_business_ids of his own and only company_id. Every partner has a company_id field. And any company has a line_of_business_ids field (in my case). 

I'm not able to write this domain myself.

Could you help me?

Thanks to help

I actually have this code :

In Python

class Partner(models.Model):
_inherit = "res.partner"
     related_business_id = fields.Many2one('res.partner', string='Related business line')
     line_business_ids = fields.One2many(comodel_name='res.partner', inverse_name='related_business_id')

class res_company(models.Model):
    _inherit = "res.company"
     line_of_business_ids = fields.Many2many(comodel_name='res.partner')

In the xml view

<record id="view_partner_property_form" model="ir.ui.view">
    <field name="name">base.view.partner.form.inherit.vtm2</field>
     <field name="model">res.partner</field>
     <field name="inherit_id" ref="base.view_partner_form" />
     <field name="arch" type="xml">
         <field name="category_id" position="after">
            <field name="line_business_ids" widget="many2many_tags" 
                attrs="{'invisible': [('is_company','=', False)]}" 
                options="{'no_create_edit': True}" 
                domain="[('id', 'in', 'company_id.line_of_business_ids.ids')]" />
        </field>
    </field>
</record>

See image of the situation

Edit #1

I have tried all this domains. No success...

domain="[('company_id.line_of_business_ids', 'in', id )]"

domain="[('id', 'in', company_id.line_of_business_ids)]

domain="[ ( 'company_id.line_of_business_ids', '=', [ (6, [0], [id]) ] ) ]

domain="[('company_id.line_of_business_ids.id', 'in', company_id.line_of_business_ids )]"

domain="[('company_id.line_of_business_ids', '=', company_id.line_of_business_ids.ids )]"

domain="[('company_id.line_of_business_ids', '=', company_id.line_of_business_ids.id )]"

domain="[('company_id.line_of_business_ids', '=', company_id.line_of_business_ids.partner_id.id )]"

domain="[('company_id.line_of_business_ids', 'in', company_id.line_of_business_ids )]"

domain="[('company_id.line_of_business_ids', 'in', company_id.line_of_business_ids[0][2] )]"