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# -*- coding: utf-8 -*-
from odoo import models, fields, _
from odoo.exceptions import UserError
class IrAttachment(models.Model):
_inherit = 'ir.attachment'
def unlink(self):
# OVERRIDE
linked_edi_documents = self.env['account.edi.document'].search([('attachment_id', 'in', self.ids)])
linked_edi_formats_ws = linked_edi_documents.edi_format_id.filtered(lambda edi_format: edi_format._needs_web_services())
if linked_edi_formats_ws:
raise UserError(_("You can't unlink an attachment being an EDI document sent to the government."))
return super().unlink()
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