Create Linked CB Gallery Media Items

is there another trigger that we can use for the activity of the item being created so that I can pass the activity id and the asset together?

Can you be more specific the chain of things? I assume you're doing: Auto Action > Create Media > Auto Action > Create Activity? So your activity is being created from gallery_onAfterCreateItem trigger? or are you just using the included system action? Where are you wanting to pass the activity id and asset?

Right now we are only using the gallery_onAfterCreateItem event when a CB Gallery Item is created then we send that item via REST passing the photos id, url and caption. We don't have a corresponding activity action that sends the activity via REST. So what I guess I need reading from your response is an event for the activity and then another one for the photo. We have the photo action please can I have a trigger for the activity action so that I can add that as well.

Please see the below tutorial for a list of available triggers.

www.joomlapolis.com/documentation/279-community-builder/tutorials/18358-using-cb-triggers

You'll probably have to use the below given the activity is created directly through API.

activity_onAfterUpdateActivity
activity_onAfterCreateActivity

Basically same as the gallery trigger where var1 is the activity object. You'd get its id with [var1_id].

Everything seems to be working with the exception of linking the files externally. for example [site_url]/images/comprofiler/plug_cbgallery/[user]/photos/4a7bffee57272d5158945558599e357c.jpg is the location of a photo but I cannot show this photo in my browser and hence the other application can't pick it up.

CB Gallery files cannot be accessed directly. They have to be accessed through PHP. This is because they're secured by various access controls. Notice the CB Gallery directory is htaccess protected. To have it rebuild a media entries gallery and render it inline use the below URL structure.

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This has worked. The challenge we are now facing is transmitting the accompanying activity. We use activity_onAfterCreateActivity and activiity_onAfterUpdateActivity to send via request action which works except the substitution of the params of the activity. [var1_params] is empty but all the other substitutions ([var1_date], [var1_description] etc.) work. What could be the issue? We really need the params because without them we can't link the activity to its media.