Add Mailchimp interest choice to Ninja Forms

Here is a code snippet example for setting a tag per form:
https://github.com/ibericode/mc4wp-snippets/blob/master/integrations/ninja-forms/different-tag-per-form.php

This can also be adapted to support interest groups instead of tags by using

$subscriber->interests[ “interest-id” ] = true;

instead of $subscriber->tags[] = ‘NL’;

Hope that helps. If you have any questions, please let me know!

Hi there,

thank you for your quick reply. I tried the solution in the code snippet but I come across a problem.

My interest field looks like this in the form:

<input type="hidden" name="INTERESTS[761fe95add]" value="Summer project">

And the snippet like this:

add_filter( 'mc4wp_integration_ninja-forms_subscriber_data', function(MC4WP_MailChimp_Subscriber $subscriber, $form_id) {
    if ($form_id == 3) {
        $subscriber->interests['761fe95add'] = true;
    } 
    return $subscriber;
}, 10, 2);

When I tried to subscribe from the form I receive this error:

[2021-06-09 15:37:39] ERROR: Ninja Forms > Mailchimp API Error: Bad Request. Invalid Resource. Invalid interest ID: '761fe95add'.
Request:
POST https://us6.api.mailchimp.com/3.0/lists/**********/members
{"status":"pending","email_address":"name.***+TEST@gm***.com","interests":{"761fe95add":true},"merge_fields":{"MMERGE1":"Name"},"email_type":"html","ip_signup":"95.90.***.***","tags":[]}
Response:
400 Bad Request
{"type":"https://mailchimp.com/developer/marketing/docs/errors/","title":"Invalid Resource","status":400,"detail":"Invalid interest ID: '761fe95add'.","instance":"722e0f6f-31b0-****-94cd-************"}

Am I using the wrong ID? Where should I get the correct one?

Thanks a lot for your help,

Simone

• This reply was modified 3 years, 5 months ago by Simone Montanari.

Please go to Mailchimp for WP > Mailchip and click on your audience name, that’s where you see the interest group ID.

Hi Lap,

that worked, thanks a lot!

Have a nice,

Simone

I am interesting in using this with Ninja Forms but instead of using an hidden field I would like the user to check the options in the Checkbox List.

What would be the correct way of doing this?

Thanks for your help.

Hey @yepecece,

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