RATIONALE
Channel model is a mail.thread enabled model behaving strangely with followers,
notifications and discuss. Its code should however be simplified to be more
self contained and avoid unwanted side effects on other models.
SPECIFICATIONS
Remove ``channel_id`` field from ``mail.invite.wizard``. As we removed
support of (un)subscribing channel-based followers there is no need anymore
to have a field to add them in invite wizard. We can now safely remove this
field as it has no use anymore.
LINKS
Task ID-2070632 (main task)
Task ID-2419762 (followup task)
COM PR odoo/odoo#62859
ENT PR odoo/enterprise#15172
UPG PR odoo/upgrade#2005
Before this fix, the attachments are don't save to the record and are
remove with the wizard. We can't add the attachments to mail.message
(like 'mail.compose.message') because it's auto_delete/unlink and the
attachments are removed before the recipient can read it.
Use case: I can create a Channel on a chatter, for example on a task
If I choose create and edit, there's another window coming where I
can set up the Channel. In this situation I can't add any members.
But then as the channel is empty and I (as the creator) am not by default
in that channel, I can't find it in my Channels in Discuss...
The wizard is the same object, but to add channel as follower, some fields was not required. Via the 'mail_invite_follower_channel_only' context key, the unrelevant fields are hidden.
Followers can now be partners or channels. Partners following a document
will receive needaction, as previously. However people can follow documents
through channels. Members of a channel are able to listen to a stream
of messages using the channel. Those messages do not create needaction
messages. It is therefore possible to follow documents without receiving
too much notifications. For interesting documents subscribing with its
partner will create notification.
message_follower_ids fields is udpated. It is now a many2many to
mail.followers, not to res.partner anymore. A subscription can be either
a partner (partner_id) or a channel (channel_id).
Some access rules have been updated accordingly.
Thibault Delavallée