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WooCommerce Add Custom Fields to Products
<?php
// For variations
add_action( 'woocommerce_variation_options_pricing', 'yanco_add_custom_field_to_variations', 10, 3 );
function yanco_add_custom_field_to_variations( $loop, $variation_data, $variation ) {
woocommerce_wp_text_input( array(
'id' => 'custom_field[' . $loop . ']',
'class' => 'short',
'label' => __( 'Custom Field', 'woocommerce' ),
'value' => get_post_meta( $variation->ID, 'custom_field', true )
)
);
}
add_action( 'woocommerce_save_product_variation', 'yanco_save_custom_field_variations', 10, 2 );
function yanco_save_custom_field_variations( $variation_id, $i ) {
$custom_field = $_POST['custom_field'][$i];
if ( isset( $custom_field ) ) {
update_post_meta( $variation_id, 'custom_field', esc_attr( $custom_field ) );
}
}
add_filter( 'woocommerce_available_variation', 'yanco_add_custom_field_variation_data' );
function yanco_add_custom_field_variation_data( $variations ) {
$variations['custom_field'] = '<div class="woocommerce_custom_field">Custom Field: <span>' . get_post_meta( $variations[ 'variation_id' ], 'custom_field', true ) . '</span></div>';
return $variations;
}
// For Singular Product
add_action( 'woocommerce_product_options_pricing', 'yanco_add_custom_field_to_products' );
function yanco_add_custom_field_to_products() {
woocommerce_wp_text_input( array(
'id' => 'custom-field-id',
'class' => 'short wc_input_price',
'label' => __( 'Custom Field', 'woocommerce' ) . ' (' . get_woocommerce_currency_symbol() . ')',
'data_type' => 'price',
));
}
add_action( 'save_post_product', 'yanco_save_custom_field' );
function yanco_save_custom_field( $product_id ) {
global $pagenow, $typenow;
if ( 'post.php' !== $pagenow || 'product' !== $typenow ) {
return;
}
if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
return;
}
if ( isset( $_POST['custom-field-id'] ) ) {
if ( $_POST['custom-field-id'] ) {
update_post_meta( $product_id, 'custom-field-meta-key', $_POST['custom-field-id'] );
}
} else {
delete_post_meta( $product_id, 'custom-field-meta-key' );
}
}
add_action( 'woocommerce_single_product_summary', 'yanco_display_custom_field', 9 );
function yanco_display_custom_field() {
global $product;
if ( $product->get_type() <> 'variable' && $custom_field_value = get_post_meta( $product->get_id(), 'custom-field-meta-key', true ) ) {
echo '<div class="woocommerce_custom_field">';
_e( 'Custom Field: ', 'woocommerce' );
echo '<span>' . wc_price( $custom_field_value ) . '</span>';
echo '</div>';
}
}
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