new auto action

Can I set up a new auto action trigger that sends out an email if someone does a comment on a photo in CB Gallery?

What I now already:
table: #_comprofiler_plugin_activity_comments
type: gallery photo
item: ID of the photo

Is s possible to set up new triggers?
And could a mail like this?
"XX did a comment on photo [thumbnail] in the community."

There's the activity_onPushComments trigger, but no that's not really doable right now. The problem is the owner of that gallery entry is who you'd need to send the notification to and that information isn't available to CB Auto Actions as the trigger doesn't contain enough information. This is being fixed in CB Activity 4.0.0 where I'll be improving the API and the triggers significantly.

I understand.

But is it currently be possible to use this trigger and put a short feed in the CB Activity list? It is then an information for all members.
Would be an alternative.

The issue comes full circle back to you being unable to substitute in the owner of the photos information. This means you've no way of linking it to the owner of the photo. So no that's probably not very doable either. Once the Asset column is implemented it'll include more targeted information such as the following.

gallery.profile.PROFILE_ID.photos.PHOTO_ID

This usage will be replacing Type, Subtype, Parent, and Item columns entirely. It contains the owner of the entry and the entry id, which should allow triggers to send emails or PMs for example based off that profile id. The above is just an example though as I don't know yet how I'm going to format the assets for various plugin activity nor how it's going to migrate properly on install.

Ideally it should format it as follows.

gallery.GALLERY_ASSET.ITEM_TYPE.ITEM_ID

So lets say I upload a photo to my profile gallery then it becomes the following for example.

gallery.profile.42.photos.12

This is predictably parseable so CB Activity theoretically should be able to rebuild the objects. For albums you'd just have the following.

gallery.profile.42.album.9

Looking further into the future for GJ you'd have the following.

groupjive.global.group.3

The default asset for GJ will be "global" which is independent from the owner and user_id of the activity entry it self would just be the group owner most likely.

This is all a bit confusing right now I'm sure, but I haven't even started on this API so I can't really be any more clear than what is to come until I've started implementing it. There probably needs to be a way for CB Gallery to extend CB Activity and rebuild the gallery object so you'd have access to the gallery object and the photo object through CB Gallery, but I don't know yet.

Thanks Kyle for your detailed answer, although it is quite complex for me as a non-programmer. But I get the context, so I will check out the next release.