mutemercy

Hi,

Thanks for your replay. I’ve just applied the fix to my code. Anyway, the actual code on that wc file could lead to a fatal error in the condition I’ve mentioned.

BR

Marco

well, I’ve investigated a little more.

try to use this filter hook: woocommerce_checkout_fields

filter the args with as exemple this func

function showCheckoutField( $fields ){
        
        $fields[$this->target_hooks][$this->cf_name] = array(
            'label' =>  __($this->label, 'wptravelandtour-txt' ),
            'placeholder' => $this->placeholder,
            'required' => $this->required,
            'clear' => true,
            'type' => $this->type,
            'class' => array('form-row-wide', $this->wrapper_class ),
            'label_class' => $this->label_class,
            'options' => $this->checkout_options,
        );

        if ( $this->priority != 10 ){
            $fields[$this->target_hooks][$this->cf_name]['priority'] = $this->priority;
        }
        
        return $fields;
    }

if ‘label_class’ is a string && required is true … you’ll get the fatal error

on the woo file wc-template-functions.php (starting @ line 3021)

$args = wp_parse_args( $args, $defaults );
		$args = apply_filters( 'woocommerce_form_field_args', $args, $key, $value );

		if ( is_string( $args['class'] ) ) {
			$args['class'] = array( $args['class'] );
		}

		if ( $args['required'] ) {
			// hidden inputs are the only kind of inputs that don't need an aria-required attribute.
			// checkboxes apply the custom_attributes to the label - we need to apply the attribute on the input itself, instead.
			if ( ! in_array( $args['type'], array( 'hidden', 'checkbox' ), true ) ) {
				$args['custom_attributes']['aria-required'] = 'true';
				$args['label_class'][]                      = 'required_field';
			}

			$args['class'][]    = 'validate-required';
			$required_indicator = '&nbsp;<span class="required" aria-hidden="true">*</span>';
		} else {
			$required_indicator = '&nbsp;<span class="optional">(' . esc_html__( 'optional', 'woocommerce' ) . ')</span>';
		}

		if ( is_string( $args['label_class'] ) ) {
			$args['label_class'] = array( $args['label_class'] );
		}

as I wrote: on wc-template-functions.php seems line 3042 should be called before 3033 (or better at 3028) to prevent the error.

Have a nice day!