This logic is a bit wrong here. There's no need for default `fb_connect_id` if community has its own facebook ids.

So:

```
community = Maybe(@current_community)

(APP_CONFIG.fb_connect_id || community.facebook_connect_id.get_or_else(false)) && !@facebook_merge && community.facebook_connect_enabled?.get_or_else(false)
```

(I don't know what is facebook_merge, but maybe it is important?)