Is there a simple way to find entries that do not have a relationship with another channel? I see similar questions here and here, but neither seem to work in this context (or I don't know how to adapt their answers).
I have 3 channels, 'accounts', 'clubs' and 'subscriptions'. Every 'subscription' has a required entries field (limit 1) for 'account' and 'club'. In this case, I'm trying to find 'accounts' that are not associated with a club (i.e. do not have a 'subscription'). Sounds like it should be easy, but not finding an answer.
Looking for something like {% set params = params | merge({ not relatedTo : subscriptions }) %}
, which obviously doesn't work. I'm using merge because there may be other criteria as well (such as account status, etc).
Any ideas? Thanks.