I get the warning that $rule[‘value’] in ACF_Location::compare_to_rule is undefined. I checked the values and the $rule parameter only has “param” and “operator” set.
The warnings all look like this:
Warning: Undefined array key "value" in /home/u680869368/domains/jaisamusic.schonbald.live/public_html/wp-content/plugins/advanced-custom-fields-pro/includes/locations/abstract-acf-location.php on line 183
(each time with line 183 and 186 of course)
The $rule looks like this:
array(2) { ["param"]=> string(4) "post" ["operator"]=> string(2) "==" }
To get rid of the warning I added the following line at the beginning of the function.
if (!isset($rule['value'])) return false;
Edit: Ok, now I understand where this issue comes from. I have some component field groups that are solely used in clone fields by other field groups. To be sure that they are never shown on any other location, I selected post as rule without a value.
So this isn’t really an issue with the ACF location class. But it shows a different issue: it should be possible to select “nowhere” as a location for field groups that are only intended to be imported via clone fields.
