# Find the changeset and check it is valid
changeset = Changeset.find(id)
- raise OSM::APIChangesetNotYetClosedError, changeset if changeset.is_open?
raise OSM::APIChangesetAlreadySubscribedError, changeset if changeset.subscribers.exists?(current_user.id)
# Add the subscriber
# Find the changeset and check it is valid
changeset = Changeset.find(id)
- raise OSM::APIChangesetNotYetClosedError, changeset if changeset.is_open?
raise OSM::APIChangesetNotSubscribedError, changeset unless changeset.subscribers.exists?(current_user.id)
# Remove the subscriber