Tell us what you are trying to do?
I have a form select field in a view that is populated with data from a post relationship. I want to only display options in the select field that have been connected. The reason is because if an option is selected that isn't connected yet there will be no results displayed.
Is there any documentation that you are following? no
Is there a similar example that we can see?
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What is the link to your site?
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If you head to the View's Custom Search Settings > Let me choose individual settings manually > Which options to display in the form inputs > Show only available options for each input > Hide/Disable, does that not do what you expect?
(Not to show "inexistent" options)
This is producing only the "existing" connections on my local tests.
That did work! Thank you!