在 Woocommerce 的购物车中显示多个产品自定义字段值

Question

I have a problem with custom fields & values from my product page appearing on the cart page. As you can see from the screenshots, I have three fields: "Color," "Texto1" and "Texto2" and only the first seems to appear on my cart page.

This is the code that print the fields on the product page:

// Field 1
if( ! empty( $FieldType1 ) ){
    if( $FieldType1 == "TEXT AREA"){
    echo '<div>
        <label>'.$FieldName1.':<br></label> <textarea name="FieldTypeValue1" maxlength="'.$FieldLenght1.'" rows="2" cols="80" placeholder="" required></textarea>
    </div><br>';
    }

    if( $FieldType1 == "TEXT BOX"){
    echo '<div>
        <label>'.$FieldName1.':<br></label> <input type="text"  maxlength="'.$FieldLenght1.'" name="FieldTypeValue1" value="" required>
    </div><br>';
    }

    if( $FieldType1 == "DROP DOWN"){
        echo '<div>
        <label>'.$FieldName1.':<br></label>
        <select name="FieldTypeValue1">';
        foreach ($Dropdown1Content as $Dropdown1IndividualContent) {
        echo '<option>';
        echo $Dropdown1IndividualContent;
        echo '</option>';
        }

        echo '</select></div><br>';
    }
}

// Field 2  
if( ! empty( $FieldType2 ) ){
    if( $FieldType2 == "TEXT AREA"){
    echo '<div>
        <label>'.$FieldName2.':<br></label> <textarea name="FieldTypeValue2" maxlength="'.$FieldLenght2.'" rows="2" cols="80" placeholder="" required></textarea>
    </div><br>';
    }

    if( $FieldType2 == "TEXT BOX"){
    echo '<div>
        <label>'.$FieldName2.':<br></label> <input type="text"  maxlength="'.$FieldLenght2.'" name="FieldTypeValue2" value="" required>
    </div><br>';
    }

    if( $FieldType2 == "DROP DOWN"){
        echo '<div>
        <label>'.$FieldName2.':<br></label>
        <select name="FieldTypeValue2">';
        foreach ($Dropdown2Content as $Dropdown2IndividualContent) {
        echo '<option>';
        echo $Dropdown2IndividualContent;
        echo '</option>';
        }

        echo '</select></div><br>';
    }
}



// Field 3
if( ! empty( $FieldType3 ) ){
    if( $FieldType3 == "TEXT AREA"){
    echo '<div>
        <label>'.$FieldName3.':<br></label> <textarea name="FieldTypeValue3" maxlength="'.$FieldLenght3.'" rows="2" cols="80" placeholder="" required></textarea>
    </div><br>';
    }

    if( $FieldType3 == "TEXT BOX"){
    echo '<div>
        <label>'.$FieldName3.':<br></label> <input type="text"  maxlength="'.$FieldLenght3.'" name="FieldTypeValue3" value="" required>
    </div><br>';
    }

    if( $FieldType3 == "DROP DOWN"){
        echo '<div>
        <label>'.$FieldName3.':<br></label>
        <select name="FieldTypeValue3">';
        foreach ($Dropdown3Content as $Dropdown3IndividualContent) {
        echo '<option>';
        echo $Dropdown3IndividualContent;
        echo '</option>';
        }

        echo '</select></div><br>';
    }
}

This is the code that saves the value of the fields on the product page

// Store custom field label and value in cart item data
add_action( 'woocommerce_add_cart_item_data','save_my_custom_checkout_field', 10, 2 );
function save_my_custom_checkout_field( $cart_item_data, $product_id ) {
if( isset( $_REQUEST['FieldTypeValue1'] ) ) {
    $cart_item_data['custom_data']['label'] = get_post_meta($product_id, 'FieldName1', true);
    $cart_item_data['custom_data']['value'] = sanitize_text_field( $_REQUEST['FieldTypeValue1'] );
    $cart_item_data['custom_data']['ukey'] = md5( microtime().rand() );
}
return $cart_item_data;

if( isset( $_REQUEST['FieldTypeValue2'] ) ) {
    $cart_item_data['custom_data']['label'] = get_post_meta($product_id, 'FieldName2', true);
    $cart_item_data['custom_data']['value'] = sanitize_text_field( $_REQUEST['FieldTypeValue2'] );
    $cart_item_data['custom_data']['ukey'] = md5( microtime().rand() );
}
return $cart_item_data;

if( isset( $_REQUEST['FieldTypeValue3'] ) ) {
    $cart_item_data['custom_data']['label'] = get_post_meta($product_id,'FieldName3', true);
    $cart_item_data['custom_data']['value'] = sanitize_text_field( $_REQUEST['FieldTypeValue3'] );
    $cart_item_data['custom_data']['ukey'] = md5( microtime().rand() );
}
return $cart_item_data;

And this is the one that print the values on the cart:

// Display items custom fields label and value in cart and checkout pages
add_filter( 'woocommerce_get_item_data', 'render_meta_on_cart_and_checkout', 10, 2 );
function render_meta_on_cart_and_checkout( $cart_data, $cart_item ){

$custom_items = array();

/* Woo 2.4.2 updates */
if( !empty( $cart_data ) ) {
    $custom_items = $cart_data;
}
if( isset( $cart_item['custom_data'] ) ) {
    $custom_items[] = array(
        'name' => $cart_item['custom_data']['label'],
        'value' => $cart_item['custom_data']['value'],
    );
}
return $custom_items;

}

The Custom fields on product page:

The product in cart (with the missing data):

I'm not sure if the problem is at the point where values are saved or at the point where they are printed.

Any help would be much appreciated.

Answer 1

Try this hooked functions instead, where I have revisited your code to make it work:

// Store custom field label and value in cart item data
add_filter( 'woocommerce_add_cart_item_data','save_my_custom_checkout_field', 20, 2 );
function save_my_custom_checkout_field( $cart_item_data, $product_id ) {
    $label1 = get_post_meta( $product_id, 'FieldName1', true );
    $label2 = get_post_meta( $product_id, 'FieldName2', true );
    $label3 = get_post_meta( $product_id, 'FieldName3', true );

    if( isset( $_REQUEST['FieldTypeValue1'] ) && ! empty( $label1 ) )
        $cart_item_data['custom_data']['1'] = array(
            'label' => $label1,
            'value' => sanitize_text_field( $_REQUEST['FieldTypeValue1'] ),
        );

    if( isset( $_REQUEST['FieldTypeValue2'] ) && ! empty( $label2 ) )
        $cart_item_data['custom_data']['2'] = array(
            'label' => $label2,
            'value' => sanitize_text_field( $_REQUEST['FieldTypeValue2'] ),
        );

    if( isset( $_REQUEST['FieldTypeValue3'] ) && ! empty( $label3 ) )
        $cart_item_data['custom_data']['3'] = array(
            'label' => $label3,
            'value' => sanitize_text_field( $_REQUEST['FieldTypeValue3'] ),
        );

    if( count($cart_item_data['custom_data']) > 0 )
        $cart_item_data['custom_data']['key'] = md5( microtime().rand() );

    return $cart_item_data;
}

// Display items custom fields label and value in cart and checkout pages
add_filter( 'woocommerce_get_item_data', 'render_meta_on_cart_and_checkout', 20, 2 );
function render_meta_on_cart_and_checkout( $cart_data, $cart_item ){
    $custom_items = array();

    if( !empty( $cart_data ) )
        $custom_items = $cart_data;

    if( isset( $cart_item['custom_data'] ) ) {
        foreach( $cart_item['custom_data'] as $key => $custom_data ){
            if( $key != 'key' ){
                $custom_items[] = array(
                    'name' => $custom_data['label'],
                    'value' => $custom_data['value'],
                );
            }
        }
    }
    return $custom_items;
}

Code goes in function.php file of your active child theme (or active theme).

Tested and works… You will get something like that:

---

For testing I have used the following to display the 3 custom fields on single product page:

// Displaying 3 custom fields on single product pages
add_action( 'woocommerce_before_add_to_cart_button', 'add_custom_fields_single_product', 20 );
function add_custom_fields_single_product(){
    global $product;

    echo '<div>
    <label>'.__('Color').': </label><br>
    <input type="text" name="FieldTypeValue1" value="" required>
</div><br>';
    echo '<div>
    <label>'.__('Texto 1').': </label><br>
    <input type="text" name="FieldTypeValue2" value="" required>
</div><br>';
    echo '<div>
    <label>'.__('Texto 2').': </label><br>
    <input type="text" name="FieldTypeValue3" value="" required>
</div><br>';
}

Changing the following for testing purpose only (in the functions code):

    $label1 = get_post_meta( $product_id, 'FieldName1', true );
    $label2 = get_post_meta( $product_id, 'FieldName2', true );
    $label3 = get_post_meta( $product_id, 'FieldName3', true );

by:

    $label1 = __('Color'); 
    $label2 = __('Texto 1'); 
    $label3 = __('Texto 2');