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Can't seem to figure out how to add members via Channel Form to a VMG Chosen Member field.

Members need to be able to sign up for a session of their choosing on the front-end and be associated with that particular session in the CP.

There isn't any documentation on the vmg_chosen_member git page other than how to format/style the field if you're using {field:session-attendees}.

Ideally, I would pass the logged in member_id via a text input field like so:

{exp:channel:form channel="sessions" entry_id="{last_segment}" id="session-registration" class="session-form" return="url/success"}

<input name="session-attendees" type="text" value="{member_id}" />

<input type="submit" value="Register for this session" />

{/exp:channel:form}

But that doesn't work.

I don't want to use {field:session-attendees} because the member signing up for a session does not need to see the other members signed up.

What's the proper way to add members to a chosen member field via Channel Form?

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If you're wanting to pass in a member_id to a VMG Chosen Member field, you'll need to pass it in as an array with a single member_id. The following should work for you, but let me know if you still have issues!

{exp:channel:form channel="sessions" entry_id="{last_segment}" id="session-registration" class="session-form" return="url/success"}

<input name="field_id_1[]" type="text" value="{member_id}" />

<input type="submit" value="Register for this session" />

{/exp:channel:form}

(replace field_id_1[] with the ID of your VMG Chosen Member field)

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  • Thank you! I didn't include this in the original question, but I also needed to maintain the previous users who were registered for the session, and implementing your method (which worked) removed the previous registrants. To get around this, I added additional hidden fields with the previous member_ids to the form (input via stash variable), so when a new member signs up, it's like they're all signing up again. There's probably a more efficient way to do this, but it works as there is a limit of 6 registrants per session. Thanks, again.
    – Chris Bain
    Commented Mar 9, 2016 at 20:04

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