Currently, it's possible to add supporting documents on the chatter of
the time off. But it's not easy to use and doesn't make really sense.
So we will add the possibility to add it more easily.
So in this commit,
- Added 'Supporting Document' on Time Off type to support the
attachment based on types.
- On new Time Off, if the Time Off type has a support document then allow
uploading the supporting document in form view.
- The File is recorded on the chatter of the Time Off request.
- There will be synchronization between chatter and form attahcments.
PS: added non-stored m2m field to display the attachment view(m2m_binary)
in the form view as o2m does not support it.
TaskID: 2431478
Barad Mahendra
51399445a3