Custom form cannot remove consent for consent type (adding works)

[jannisborgers]

Hi there,

I have a custom form (on the privacy policy page) that allows users to change their consent once they have submitted consent via the banner.

There are two types of consent on the page: Necessary and Statistics, where Necessary cannot be unchecked.

When I only give consent for Necessary cookies, but not statistics. I can set the Statistics consent to true by re-submitting consent via the custom form.

When I try to remove the Statistics consent that I initially gave via the cookie banner, and re-submit the custom form, I get the following error:

Undefined index: cookieTypes

1. in /Users/jannisborgers/Websites/baypat/vendor/nilsenpaul/complete-cookie-consent/src/controllers/ConsentController.php at line 22

Line 22 says:

$checkedCookieTypes = $request->post()['cookieTypes'];

My form template looks like this (I removed some excess mark up here):

<form method="POST" class="ccc-banner__form ccc-form">
            {{ csrfInput() }}
            <input type="hidden" name="action" value="complete-cookie-consent/consent/submit">
                {% set consentInfo = craft.ccc.consentInfo %}
                {% for consentType, consentStatus in consentInfo.consent %}
                    {% set checked = (consentStatus == true or consentType == "necessary") ? "checked" : "" %}
                    {% set disabled = consentType == "necessary" ? "disabled" : "" %}
                    <label for="cookieType-{{ consentType }}" class="ccc-form__label">
                        <input class="cookieForm__label__input" type="checkbox" id="cookieType-{{ consentType }}" name="cookieTypes[]" value="{{ consentType }}" {{ checked }} {{ disabled }} /> 
                        {{ consentType|capitalize }}
                    </label>
                {% endfor %}
                <input type="submit"" value="{{ "Save settings"|t }}">
    </form>