How to make field ir.attachment (Required/Mandatory) based on condition

Question

Below code doesn't Work:

py:

is_other_attachment = fields.Boolean(string='Other Attachment',default=False)

other_attachment = fields.Many2many(comodel_name="ir.attachment",
                                                relation="m2m_ir_attachment_rel",
                                                column1="m2m_id",
                                                column2="attachment_id",
                                                string="Other Attachment")

xml:

<field name="is_other_attachment"/>
<field name="other_attachment" widget="many2many_binary" attrs="{'required':[('is_other_attachment', '=', True)]}"/>

HIREN DANGAR · Accepted Answer

Hello Yezeed,
If you are wanna use specific condition on *ir.attachment* object my suggestion is use *@api.constrains *for that field.
Like here we set mandatory to add *attachment* based on *state,*
*@api.one
* *@api.constrains('other_attachment', 'state')
* *def check_ir_attachment(self):
**    for rec in self:
**        if rec.state == 'confirm':
**            raise ValidationError("Please upload document for this record to move to '%s' stage." % rec.state)**
* This can help you a lot.(Y)
Tha

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