Hi Avash,

Please try this,

class Repair(models.Model):

    _inherit = 'repair.order'

    sale_order_name = fields.Char(related='your_custom_field.name',

                                  copy=False, readonly=True, store=True)

class RepairFee(models.Model):

    _inherit = 'repair.fee'

       so_name = fields.Char(related='repair_id.sale_order_name',readonly=True,store=True)

Added dependency in manifest file for 'repair' module and update the module.

Thanks

Regards,

Email:      odoo@aktivsoftware.com  

Skype: kalpeshmaheshwari

Hello Jainesh, thanks for reply

Dependency is already on manifest, but still shows same error.   weird cuz if I define another related field to existing repair standar field no error for those fields. so it looks like errors only with custom fields defined in repair model.

for example these 3 related fields works just fine.

class RepairFee(models.Model):
    _inherit = 'repair.fee'
    currency_id = fields.Many2one(related='repair_id.pricelist_id.currency_id',readonly=True,store=True)
    user_id = fields.Many2one(related='repair_id.user_id',readonly=True,store=True)
    date_repair = fields.Datetime(related='repair_id.date_repair',readonly=True,store=True)