WooCommerce：管理員中的動態自定義結帳字段

Question

我在向訂單管理員添加自定義結帳字段時遇到了問題（也許還有電子郵件，但我還沒有）。 除了編碼問題，我主要關注https://www.kathyisawesome.com/woocommerce-customize-checkout-fields/-到目前為止，這是我的代碼：

http://pastebin.com/y8LDcDxS

假設購物車中有一種產品，我會根據產品數量添加“ x”美元的$ fields ['extra_fields']數量。 我在kia_display_order_data_in_admin（）中苦苦掙扎-不管做什么，我總是被get_country（）所困擾。 我在pastebin中有非動態變化（基於購物車中有兩個產品）-我試圖使該零件動態化的所有其他操作均不起作用。

我看到一些選項可以將這些動態字段加載到admin中，但我無法到達那里：

1. 再次獲取產品數量並將$ i附加到標准字段名稱的末尾

2. 以某種方式獲取所有字段的數組，以便提取$ fields ['extra_fields']

3. 通過order_id獲取extra_fields發布元

4. 還有嗎

編輯：在起亞的幫助下，我對代碼進行了一些修改，現在它將動態添加自定義結帳字段。 這一直到管理訂單屏幕都有效，但是在嘗試更新admin kia_save_extra_details()訂單詳細信息時將不起作用

編輯2：請參閱下面接受的答案，因為這適用於我的問題

Answer 1

您確定產品附加組件可能不適用於此嗎？ 如果沒有，我認為您需要的是自定義輸入類型。 這應該使您入門。

/* Add a new checkout field 
 * 
 * These is our base field group, later on, depending on product quanitiy, $key = 'passenger_title_1' for example
 * 
 */

function supreme_filter_checkout_fields($fields){
    $fields['extra_fields'] = array(
    'passenger_details' => array(
        'type' => 'passenger_details',
        'required'      => false,
        'label' => __( 'Passenger Details' )
        ),
    );

    return $fields;

}
add_filter( 'woocommerce_checkout_fields', 'supreme_filter_checkout_fields' );

“ passenger_details”輸入到底是什么？ 好吧，我們要定義它，因為woocommerce_form_field()具有萬能的功能，以防類型與WooCommerce的任何默認值都不匹配。 參見'woocommerce_form_field_' . $args['type'] 'woocommerce_form_field_' . $args['type']

這是我們要列出每個乘客想要的字段組的地方。

function supreme_filter_checkout_field_group( $field, $key, $args, $value ){
    $op_cart_count = WC()->cart->get_cart_contents_count();

    $html = '';

    for ( $i = 1; $i <= $op_cart_count; $i++) {

        $html .= woocommerce_form_field( "passenger_details[$i][title]", array( 
            "type" => "select",
            "return" => true,
            "value" => "",
            "options" => array( "mr" => __( "Mr" ), "mrs" => __( "Mrs" ), "miss" => __( "Miss" ) ),
            "required"      => false,
            "label" => __( "Title" )
            )
        );
        $html .= woocommerce_form_field( "passenger_details[$i][first_name]", array(
            "type" => "text",
            "return" => true,
            "value" => "",
            "required"      => false,
            "label" => __( "First Name" )
            )
        );
        $html .= woocommerce_form_field( "passenger_details[$i][middle_name]", array(
            "type" => "text",
            "return" => true,
            "value" => "",
            "required"      => false,
            "label" => __( "Middle Name" )
            )
        );
        $html .= woocommerce_form_field( "passenger_details[$i][last_name]", array(
            "type" => "text",
            "return" => true,
            "value" => "",
            "required"      => false,
            "label" => __( "Last Name" )
            )
        );
        $html .= woocommerce_form_field( "passenger_details[$i][date_of_birth]", array(
            "type"          => "text",
            "return" => true,
            "value" => "",
            "class"         => array("date-of-birth form-row-wide"),
            "required"      => false,
            "label"         => __("Date of Birth"),
            "placeholder"       => __("Select Date"),
            "options"     =>   array("" => __("Date of Birth", "woocommerce" ))
            )
        );
        $html .= woocommerce_form_field( "passenger_details[$i][dietary_required]", array(
            "type" => "select",
            "return" => true,
            "value" => "",
            "class"         => array("dietary-required form-row-wide"),
            "options" => array( "" => __( "Please Select" ), "y" => __( "Yes" ), "n" => __( "No" ) ),
            "required"      => false,
            "label" => __( "Dietary Requirements?" )
            )
        );
        $html .= woocommerce_form_field( "passenger_details[$i][dietary_preference]", array(
            "type" => "select",
            "return" => true,
            "value" => "",
            "class"         => array("dietary-requirements form-row-wide"),
            "options" => array( "v" => __( "Vegetarian" ), "GF" => __( "Gluten Free" ) ),
            "required"      => false,
            "label" => __( "Meal Preferences" )
            )
        );

    }
    return $html;
}
add_filter( 'woocommerce_form_field_passenger_details', 'supreme_filter_checkout_field_group', 10, 4 );



// display the extra field on the checkout form
function supreme_extra_checkout_fields(){ 

    $checkout = WC()->checkout();

    foreach ( $checkout->checkout_fields['extra_fields'] as $key => $field ) :

        woocommerce_form_field( $key, $field, $checkout->get_value( $key ) );

    endforeach;


}
add_action( 'woocommerce_checkout_after_customer_details' ,'supreme_extra_checkout_fields' );

編輯處理和保存數據。 請注意，我在上面更改了supreme_filter_checkout_field_group函數，並刪除了ID參數。

~~使用id參數，我們可以動態設置輸入名稱。 結果標記應該是這樣的：~~

<input type="text" class="input-text " name="last_name" id="passenger_details[2]last_name" placeholder="" value="">

錯了 name參數必須是一個數組！ 然后從woocommerce_form_field()的第一個參數中woocommerce_form_field()名稱。 該ID與我們的需求無關，盡管它需要唯一以維護正確的標記。 這是我們需要的結果，現在應該通過上述修改得到：

<input type="text" class="input-text " name="passenger_details[2][last_name]" id="passenger_details[2][last_name]" placeholder="" value="">

現在，提交$_POST['passenger_data']應該是一個數組（乘客）的數組（乘客詳細信息）。 在我編輯之后，它就是！

現在，為了處理此數據並清理乘客數據中的各個字段，我們創建了一個用於清理自定義字段類型的函數：

/**
 * Sanitize our custom field
 * 
 */
function supreme_custom_process_checkout_field_passenger_details( $posted ){

    $clean = array();

    foreach( $posted as $passenger ){
        $details = supreme_custom_checkout_clean_passenger_details( $passenger );

        if( ! empty( $details ) ){
            $clean[] = $details;
        }
    }

    return $clean;
}
add_filter( 'woocommerce_process_checkout_passenger_details_field', 'supreme_custom_process_checkout_field_passenger_details' );


function supreme_custom_checkout_clean_passenger_details( $passenger = array() ){
    $details = array();
    if( isset( $passenger["title"] ) ){
        $details['title'] = sanitize_text_field( $passenger["title"] );
    }
    if( isset( $passenger["first_name"] ) ){
        $details['first_name'] = sanitize_text_field( $passenger["first_name"] );
    }
    if( isset( $passenger["middle_name"] ) ){
        $details['middle_name'] = sanitize_text_field( $passenger["middle_name"] );
    }
    if( isset( $passenger["last_name"] ) ){
        $details['last_name'] = sanitize_text_field( $passenger["last_name"] );
    }
    if( isset( $passenger["date_of_birth"] ) ){
        $details['date_of_birth'] = $date = preg_replace("([^0-9/])", "", $passenger["date_of_birth"] );
    }
    if( isset( $passenger["dietary_required"] ) ){
        $details['dietary_required'] = $passenger["dietary_required"] == "y" ? "y": "n";
    }
    if( isset( $passenger["dietary_preference"] ) && isset( $passenger["dietary_required"] ) && $passenger["dietary_required"] == "y" ){
        $details['dietary_preference'] = $passenger["dietary_preference"] == "GF" ? "GF": "v";
    }
    return $details;
}

現在已經清理完畢，更新僅是保存post meta的問題：

/**
 * update_post_meta
 * 
 */
function supreme_custom_checkout_field_update_order_meta( $order_id, $posted ){

    if( ! empty( $posted["passenger_details"] ) ){
        update_post_meta( $order_id, "_passenger_details", $posted["passenger_details"] );
    } else {
        delete_post_meta( $order_id, "_passenger_details" );
    }

}
add_action( 'woocommerce_checkout_update_order_meta', 'supreme_custom_checkout_field_update_order_meta', 10, 2 );

現在，我們肯定將所有字段保存在_passenger_details post元鍵中，並且我們可以在需要顯示它的任何時間遍歷該數組。 例如，在管理訂單頁面上：

// display the extra data in the order admin panel
function kia_display_order_data_in_admin( $order ){  

    $passenger_details = get_post_meta( $order->id, "_passenger_details", true ); 

    if( ! empty( $passenger_details ) ) { 

        $passenger_defaults = array(
                "title" => "",
                "first_name" => "",
                "middle_name" => "",
                "last_name" => "",
                "date_of_birth" => "",
                "dietary_required" => "",
                "dietary_preference" => ""
            );

    ?>
    <div class="passenger_data">
        <h4><?php _e( "Passenger Details", "your-slug" ); ?></h4>
        <?php 
            $i = 1;

            foreach( $passenger_details as $passenger ){

                $passenger = wp_parse_args( $passenger, $passenger_defaults );

                echo "<p><strong>" . sprintf( __( "Passenger #%s", "your-slug" ), $i  ) . "</strong>" . "<br/>";
                echo __( "Title", "your-slug" ) . ' : ' . $passenger["title"] . "<br/>";
                echo __( "First Name", "your-slug" ) . ' : ' . $passenger["first_name"] . "<br/>";
                echo __( "Middle Name", "your-slug" ) . ' : ' . $passenger["middle_name"] . "<br/>";
                echo __( "Last Name", "your-slug" ) . ' : ' . $passenger["last_name"] . "<br/>";
                echo __( "Date of Birth", "your-slug" ) . ' : ' . $passenger["date_of_birth"] . "<br/>";
                echo __( "Dietary Required", "your-slug" ) . ' : ' . $passenger["dietary_required"] . "<br/>";
                echo __( "Dietary Preference", "your-slug" ) . ' : ' . $passenger["dietary_preference"] . "<br/>";

                echo "</p>";

                $i++;

            }

         ?>
    </div>
<?php }
}
add_action( "woocommerce_admin_order_data_after_order_details", "kia_display_order_data_in_admin" );

現在仍然留下了感謝頁面和電子郵件，但是數據在那里。