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# Copyright 2004-2010 OpenERP SA (<http://www.openerp.com>)
# Copyright 2011-2015 Serpent Consulting Services Pvt. Ltd.
# Copyright 2017 Tecnativa - Vicent Cubells
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
import base64
from odoo import _, models, fields
class MailThread(models.AbstractModel):
_inherit = "mail.thread"
def _track_signature(self, values, field):
""" This method allows to track creation and deletion of signature
field. You must call this method in order to display a message
in the chatter with information of the changes in the signature.
:param values: a dict with the values being written
:param field: name of the field that must be tracked
"""
if field in values:
attachments = []
messages = []
if values.get(field):
content = base64.b64decode(values.get(field))
attachments = [('signature', content)]
messages.append(_('Signature has been created.'))
messages.append(
_('Signature date: %s' % fields.Datetime.now()))
else:
messages.append(_('Signature has been deleted.'))
messages.append(_('Deletion date: %s' % fields.Datetime.now()))
msg_body = '<ul>'
for message in messages:
msg_body += '<li>'
msg_body += message
msg_body += '</li>'
msg_body += '</ul>'
self.message_post(body=msg_body, attachments=attachments)