# Part of Odoo. See LICENSE file for full copyright and licensing details. import os from odoo import api, fields, models, _ from odoo.exceptions import UserError from odoo.tools.mimetypes import guess_mimetype from odoo.tools.misc import format_date class IrAttachment(models.Model): _inherit = 'ir.attachment' @api.ondelete(at_uninstall=True) def _except_audit_trail(self): audit_trail_attachments = self.filtered(lambda attachment: attachment.res_model == 'account.move' and attachment.res_id and attachment.raw and guess_mimetype(attachment.raw) in ( 'application/pdf', 'application/xml', ) ) moves = self.env['account.move'].browse(audit_trail_attachments.mapped('res_id')).exists() id2move = {move.id: move for move in moves} for attachment in audit_trail_attachments: move = id2move.get(attachment.res_id) if move and move.posted_before and move.country_code == 'DE': ue = UserError(_("You cannot remove parts of the audit trail.")) ue._audit_trail = True raise ue def write(self, vals): if vals.keys() & {'res_id', 'res_model', 'raw', 'datas', 'store_fname', 'db_datas', 'company_id'}: try: self._except_audit_trail() except UserError as e: if ( not hasattr(e, '_audit_trail') or vals.get('res_model') != 'documents.document' or vals.keys() & {'raw', 'datas', 'store_fname', 'db_datas'} ): raise # do not raise if trying to version the attachment through a document vals.pop('res_model', None) vals.pop('res_id', None) return super().write(vals) def unlink(self): invoice_pdf_attachments = self.filtered(lambda attachment: attachment.res_model == 'account.move' and attachment.res_id and attachment.res_field in ('invoice_pdf_report_file', 'ubl_cii_xml_file') and attachment.company_id.account_fiscal_country_id.code == 'DE' ) if invoice_pdf_attachments: # only detach the document from the field, but keep it in the database for the audit trail # it shouldn't be an issue as there aren't any security group on the fields as it is the public report invoice_pdf_attachments.res_field = False today = format_date(self.env, fields.Date.context_today(self)) for attachment in invoice_pdf_attachments: attachment_name, attachment_extension = os.path.splitext(attachment.name) attachment.name = _( '%(attachment_name)s (detached by %(user)s on %(date)s)%(attachment_extension)s', attachment_name=attachment_name, attachment_extension=attachment_extension, user=self.env.user.name, date=today, ) return super(IrAttachment, self - invoice_pdf_attachments).unlink()