Choice Filter: Exclude Used Choices

speisenkarte
Sun, 17 Mar 2024 19:28:56 +0000
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Hello! I’ve found similar threads related to filtering choices but I haven’t been able to find one that translates to my use case.

I have a collection which when added to, presents the user with a choice dropdown. The visibility settings are arranged to only present the user with items specific to their dropdown choice for submission. My issue is that once the dropdown choice they’ve selected is submitted, the same choice should not still be available in the choice dropdown (ie each choice should only be submitted once per screen).

I’ve tried a relation to a collection-specific unique ID (allowing multiples) followed by a lookup which gives me an index of all the used choices for that screen. I can effectively generate a list of choices to exclude, but the filter settings on the choice component doesn’t recognize the calculated lookup column.

How can I exclude used choices from future collection additions?

Attached is an example where North, South, and East are already submitted so the user should only see “West” available as a choice.

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