38 lines
1.7 KiB
Python
38 lines
1.7 KiB
Python
from odoo import models, fields, _, api
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class DocumentRevision(models.Model):
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_name = "documents.revision"
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_description = "Document Revision"
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_sql_constraints = [
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('name_document_id_unique', 'unique (name,document_id)',
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'The revision name must be unique for each document.')]
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name = fields.Char()
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document_id = fields.Many2one('documents.document', required=True)
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attachment_id = fields.Many2one('ir.attachment', required=True)
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previous_revision_id = fields.Many2one('documents.revision', 'Previous Revision')
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next_revision_id = fields.One2many('documents.revision', 'previous_revision_id')
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@api.model_create_multi
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def create(self, vals_list):
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"""
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Creates one or more new document revisions. Each revision created replaces the
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ir.attachment tied to the document with the one provided in this revision. It
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also supersedes the previous revision, updating the document's
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current_revision_id and carrying a link to the previous revision in
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previous_revision_id.
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:param vals_list: Dictionary or list of dictionaries
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:return:
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"""
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res = super().create(vals_list)
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for rec in res:
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# When we create a new revision, we need to replace the attachment linked
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# to the document to keep it on the latest version.
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rec.document_id.attachment_id = rec.attachment_id
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# Then we update the current revision to this new revision and link
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# back to the previous revisions
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rec.previous_revision_id = rec.document_id.current_revision_id
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rec.document_id.current_revision_id = rec
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return res
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