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Hi,

I am writing a custom module and models.

My model inherits from res.partner and I am getting the following error.

TypeError: Many2many fields newmodule.partner.channel_ids and res.partner.channel_ids use the same table and columns

 

class Partner(models.Model):
_name = 'newmodel.partner'
_inherit = 'res.partner'

id = fields.Many2one('newmodel.cat',
string="Cat")


class Cat(models.Model):
_name = 'newmodel.cat'
_description = ' '

name = fields.Char(string="Name", required=True)
description = fields.Text()
partner_id = fields.One2many('newmodel.partner', 'id', string="Partners")





How can I fix it? 



Avatar
Buang
Jawaban Terbai

Just add a relation attribute for the channel_ids field in your custom  model  "newmodule.partner" and provide a different string for the same. like below 

channel_ids = fields.Many2many('mail.channel', relation="relation_newmodule_partner_m2m", string='Channels')

Avatar
Buang
Jawaban Terbai

Hi,

You might haven't specified the relation table for the many2many fields, that's why you get this error.


Suppose if you define the new many2many field like this:

partner_ids = fields.Many2many('res.partner')


Change it as follows:

partner_ids = fields.Many2many('res.partner', 'relation_m2m_table', 'rel_1', 'rel_2', string='Partners')

For detailed understanding of the working of many2many field, see: https://www.youtube.com/watch?v=i5gMQke4-Pk


Thanks

Avatar
Buang
Penulis

Hello, thank you.
I tried doing what you said but iit still gives me the same error.

you need to create a new model ot add fields to exising model ?

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