Odoo13: How to assign followers to a record via Controller - odoo

Question

In my webform controller, I am attempting to assign email addresses entered in a webform to a given record. This is the snippet of code in my controller responsible for that
if 'followers' in request.params:
raw_emails = request.httprequest.form.get('followers').split(',')
emails = [user.strip() for user in raw_emails]
#emails = ['foo#bar.com', 'foo2#bar.com',..]
for email in emails:
follower = request.env['res.users'].search(
[('email', '=', email)])
if bool(follower):
reg = {
'res_id': new_ticket.id,
'res_model': 'helpdesk.ticket',
'partner_id': follower.id
}
request.env['mail.followers'].create(reg)
else:
message = "TO DO: Add {} to the system and make the user a follower of this ticket".format(
email)
new_ticket.message_post(body=message)
With this I get strange results i.e after entering "user A" as a follower on the webform, "user B" gets added as a follower. I'm thinking the problem might be from the wrong user record being loaded into the follower variable but I'm not seeing why. Any feedback would be really appreciated.

Answer 1

You can use the message_subscribe method to add followers to a record set.
def message_subscribe(self, partner_ids=None, channel_ids=None, subtype_ids=None):
    """ Main public API to add followers to a record set. Its main purpose is
    to perform access rights checks before calling _message_subscribe. """
You have already an example in the account move, in message_new method that add a list of partners.
# Assign followers.
all_followers_ids = set(partner.id for partner in followers + senders + partners if is_internal_partner(partner))
move.message_subscribe(list(all_followers_ids))