show custom input field 40 woocommerce single product page

1/**
2 * @snippet       Add input field to products - WooCommerce
3 * @how-to        Get CustomizeWoo.com FREE
4 * @author        Rodolfo Melogli
5 * @compatible    WooCommerce 3.9
6 * @donate $9     https://businessbloomer.com/bloomer-armada/
7 */
8 
9// -----------------------------------------
10// 1. Show custom input field above Add to Cart
11 
12add_action( 'woocommerce_before_add_to_cart_button', 'bbloomer_product_add_on', 9 );
13 
14function bbloomer_product_add_on() {
15    $value = isset( $_POST['custom_text_add_on'] ) ? sanitize_text_field( $_POST['custom_text_add_on'] ) : '';
16    echo '<div><label>Custom Text Add-On <abbr class="required" title="required">*</abbr></label><p><input name="custom_text_add_on" value="' . $value . '"></p></div>';
17}
18 
19// -----------------------------------------
20// 2. Throw error if custom input field empty
21 
22add_filter( 'woocommerce_add_to_cart_validation', 'bbloomer_product_add_on_validation', 10, 3 );
23 
24function bbloomer_product_add_on_validation( $passed, $product_id, $qty ){
25   if( isset( $_POST['custom_text_add_on'] ) && sanitize_text_field( $_POST['custom_text_add_on'] ) == '' ) {
26      wc_add_notice( 'Custom Text Add-On is a required field', 'error' );
27      $passed = false;
28   }
29   return $passed;
30}
31 
32// -----------------------------------------
33// 3. Save custom input field value into cart item data
34 
35add_filter( 'woocommerce_add_cart_item_data', 'bbloomer_product_add_on_cart_item_data', 10, 2 );
36 
37function bbloomer_product_add_on_cart_item_data( $cart_item, $product_id ){
38    if( isset( $_POST['custom_text_add_on'] ) ) {
39        $cart_item['custom_text_add_on'] = sanitize_text_field( $_POST['custom_text_add_on'] );
40    }
41    return $cart_item;
42}
43 
44// -----------------------------------------
45// 4. Display custom input field value @ Cart
46 
47add_filter( 'woocommerce_get_item_data', 'bbloomer_product_add_on_display_cart', 10, 2 );
48 
49function bbloomer_product_add_on_display_cart( $data, $cart_item ) {
50    if ( isset( $cart_item['custom_text_add_on'] ) ){
51        $data[] = array(
52            'name' => 'Custom Text Add-On',
53            'value' => sanitize_text_field( $cart_item['custom_text_add_on'] )
54        );
55    }
56    return $data;
57}
58 
59// -----------------------------------------
60// 5. Save custom input field value into order item meta
61 
62add_action( 'woocommerce_add_order_item_meta', 'bbloomer_product_add_on_order_item_meta', 10, 2 );
63 
64function bbloomer_product_add_on_order_item_meta( $item_id, $values ) {
65    if ( ! empty( $values['custom_text_add_on'] ) ) {
66        wc_add_order_item_meta( $item_id, 'Custom Text Add-On', $values['custom_text_add_on'], true );
67    }
68}
69 
70// -----------------------------------------
71// 6. Display custom input field value into order table
72 
73add_filter( 'woocommerce_order_item_product', 'bbloomer_product_add_on_display_order', 10, 2 );
74 
75function bbloomer_product_add_on_display_order( $cart_item, $order_item ){
76    if( isset( $order_item['custom_text_add_on'] ) ){
77        $cart_item['custom_text_add_on'] = $order_item['custom_text_add_on'];
78    }
79    return $cart_item;
80}
81 
82// -----------------------------------------
83// 7. Display custom input field value into order emails
84 
85add_filter( 'woocommerce_email_order_meta_fields', 'bbloomer_product_add_on_display_emails' );
86 
87function bbloomer_product_add_on_display_emails( $fields ) { 
88    $fields['custom_text_add_on'] = 'Custom Text Add-On';
89    return $fields; 
90}
91