WPML: Element conditions with term IDs fail on translated pages

Beta
#1

Hi @charlie!

I am in the middle of translating a website with WPML. I run into an issue with conditions on layouts.

I managed to get Claude Code fixing it, so I asked it to write the post for you. Here it is:

When using element conditions like archive:post-type-with-term|product|product_cat with a term ID value, the condition fails on translated pages because WPML assigns different term IDs per language.

Example:

  • Croatian term “Bezglutenski kruh” = ID 17
  • English translation “Gluten-free bread” = ID 42
  • Condition set to product_cat = 17 → works on Croatian, hidden on English

Root cause: ConditionRules::archive_post_type_with_term() passes the stored term ID directly to is_tax() without translation.

Fix: Hook into cs_condition_args and translate term IDs using WPML’s wpml_object_id filter:

add_filter( 'cs_condition_args', function( $args ) {
    if ( count( $args ) !== 3 || ! is_numeric( $args[2] ) ) {
        return $args;
    }
    if ( ! taxonomy_exists( $args[1] ) || ! has_filter( 'wpml_object_id' ) ) {
        return $args;
    }
    $translated_id = apply_filters( 'wpml_object_id', (int) $args[2], $args[1], true );
    if ( $translated_id ) {
        $args[2] = $translated_id;
    }
    return $args;
}, 10, 1 );

Suggested core fix: Add WPML translation in RuleMatching::evaluate() before calling condition handlers, or within ConditionRules::archive_post_type_with_term() itself.

Thanks!