product custom fields not showing for variable products

Hi @akent64,

Can you share your code with us so we can see what might be going wrong?

The easiest way to add custom product fields is with our Premium Templates extension. This will give you access to the customizer that will let you add a ‘Custom field (product)’ block. Simply add the meta key / field name of your custom field and you’re good to go.

• This reply was modified 7 years, 4 months ago by kluver.

Hi @akent64,

It looks like you were using ‘ where you should be using '. This might be causing some problems. Also the last if statement in the wpo_wcpdf_after_item_meta hook was not correct. I rewrote the code so it should work but I would take a look at that last if statement because now you will get stuck with a lot of extra comma’s if only one value is returned.

<?php
function wc_add_custom_fields_save( $post_id ){
	// Text Field
	$woocommerce_product_information = $_POST['_product_information'];
	if( isset( $woocommerce_product_information ) ) {
		update_post_meta( $post_id, '_product_information', esc_attr( $woocommerce_product_information ) );
	}
	// Text Field
	$woocommerce_print_information = $_POST['_print_information'];
	if( isset( $woocommerce_print_information ) ) {
		update_post_meta( $post_id, '_print_information', esc_attr( $woocommerce_print_information ) );
	}
	// Text Field
	$woocommerce_custom_text_font = $_POST['_custom_text_font'];
	if( isset( $woocommerce_custom_text_font ) ) {
		update_post_meta( $post_id, '_custom_text_font', esc_attr( $woocommerce_custom_text_font ) );
	}
	// Text Field
	$woocommerce_custom_text_colour = $_POST['_custom_text_colour'];
	if( isset( $woocommerce_custom_text_colour ) ) {
		update_post_meta( $post_id, '_custom_text_colour', esc_attr( $woocommerce_custom_text_colour ) );
	}
	// Text Field
	$woocommerce_custom_text_position = $_POST['_custom_text_position'];
	if( isset( $woocommerce_custom_text_position ) ) {
		update_post_meta( $post_id, '_custom_text_position', esc_attr( $woocommerce_custom_text_position ) );
	}
	// Text Field
	$woocommerce_custom_text_height = $_POST['_custom_text_height'];
	if( isset( $woocommerce_custom_text_height ) ) {
		update_post_meta( $post_id, '_custom_text_height', esc_attr( $woocommerce_custom_text_height ) );
	}
}

add_action( 'wpo_wcpdf_after_item_meta', 'wpo_wcpdf_product_custom_field', 10, 3 );
function wpo_wcpdf_product_custom_field ( $template_type, $item, $order ) {
	// check if product exists first
	if (empty($item['product'])) return;

	// replace 'Location' with your custom field name!
	$field_name = '_product_information';
	$_product_information = method_exists($item['product'], 'get_meta') ? $item['product']->get_meta($field_name,true,'edit') : get_post_meta( $item['product']->id, $field_name, true );
	$field_name = '_print_information';
	$_print_information = method_exists($item['product'], 'get_meta') ? $item['product']->get_meta($field_name,true,'edit') : get_post_meta( $item['product']->id, $field_name, true );
	$field_name = '_custom_text_font';
	$_custom_text_font = method_exists($item['product'], 'get_meta') ? $item['product']->get_meta($field_name,true,'edit') : get_post_meta( $item['product']->id, $field_name, true );
	$field_name = '_custom_text_colour';
	$_custom_text_colour = method_exists($item['product'], 'get_meta') ? $item['product']->get_meta($field_name,true,'edit') : get_post_meta( $item['product']->id, $field_name, true );
	$field_name = '_custom_text_position';
	$_custom_text_position = method_exists($item['product'], 'get_meta') ? $item['product']->get_meta($field_name,true,'edit') : get_post_meta( $item['product']->id, $field_name, true );
	$field_name = '_custom_text_height';
	$_custom_text_height = method_exists($item['product'], 'get_meta') ? $item['product']->get_meta($field_name,true,'edit') : get_post_meta( $item['product']->id, $field_name, true );
	if (!empty($_product_information)) {
		echo '<div class="invoice-information"><b>Product Information: </b>'.$_product_information.'</div>';
	}
	if (!empty($_print_information)) {
		echo '<div class="invoice-information"><b>Print Information: </b>'.$_print_information.'</div>';
	}
	if (!empty($_custom_text_font) || !empty($_custom_text_colour) || !empty($_custom_text_position) || !empty($_custom_text_height)) {
		echo '<div class="invoice-information"><b>Custom Text Info: </b>'.$_custom_text_font.', '.$_custom_text_colour.', '.$_custom_text_position.', '.$_custom_text_height.'</div>';
	}
}

add_filter( 'wc_product_enable_dimensions_display', '__return_false' );

add_action( 'wpo_wcpdf_custom_styles', 'wpo_wcpdf_custom_styles' );
function wpo_wcpdf_custom_styles () {
?>
	.invoice-information {
	color: grey;
	font-size: 0.8em;
	}

	.weight {
	display: none;
	}
<?php
}

• This reply was modified 7 years, 4 months ago by kluver.
• This reply was modified 7 years, 4 months ago by kluver.
• This reply was modified 7 years, 4 months ago by kluver.
• This reply was modified 7 years, 4 months ago by kluver.
• This reply was modified 7 years, 4 months ago by kluver.

I have simplified some of your code (moved a lot of legacy checks too, assuming you’re on WC3+) and added a check that only uses the parent if it’s a variation:

$product = $item['product']->is_type( 'variation' ) ? wc_get_product( $item['product']->get_parent_id() ) : $item['product'];

Full snippet (I omitted the filters/actions that are not relevant for this context, you can keep them as is):

add_action( 'wpo_wcpdf_after_item_meta', 'wpo_wcpdf_product_custom_field', 10, 3 );
function wpo_wcpdf_product_custom_field ( $template_type, $item, $order ) {
	// check if product exists first
	if (empty($item['product'])) return;

	// use parent for variable products
	$product = $item['product']->is_type( 'variation' ) ? wc_get_product( $item['product']->get_parent_id() ) : $item['product'];

	if ( $_product_information = $product->get_meta( '_product_information' ) ) {
		echo '<div class="invoice-information"><b>Product Information: </b>'.$_product_information.'</div>';
	}

	if ( $_print_information = $product->get_meta( '_print_information' ) ) {
		echo '<div class="invoice-information"><b>Print Information: </b>'.$_print_information.'</div>';
	}

	$_custom_text = array();
	$_custom_text['font'] = $product->get_meta( '_custom_text_font' );
	$_custom_text['colour'] = $product->get_meta( '_custom_text_colour' );
	$_custom_text['position'] = $product->get_meta( '_custom_text_position' );
	$_custom_text['height'] = $product->get_meta( '_custom_text_height' );
	$_custom_text = array_filter($_custom_text); // remove empty values

	if (!empty($_custom_text) ) {
		echo '<div class="invoice-information"><b>Custom Text Info: </b>'.implode(', ', $_custom_text).'</div>';
	}
}

Hope that helps!

Very glad to hear it solves your issue! If you can spare a moment, we’d appreciate a plugin review here on wordpress.org: https://wordpress.org/support/plugin/woocommerce-pdf-invoices-packing-slips/reviews/#new-post

Thanks in advance and happy selling!