Woocommerce 在产品详细信息页面（Woo commerce产品详细信息页面）中添加自定义元数据库

我想添加可以在后端修改的自定义字段，但也可以在前端使用自定义字段填充

自定义字段：-

• 产品名称
• 斯诺。数
• 发票号
• 采购日期
• 位置
• 产品价格
• 客户名称
• 手机号码

//将字段添加到产品中
添加操作（“添加到购物车按钮之前的woocommerce”和“我的自定义”和“结帐”字段”）；
函数my\u custom\u checkout\u field（）{
echo“”。_uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu；
回音“产品名称”
；
回声'产品SNO
'；
回音“发票编号”；
回音“采购日期”；
回声“位置”
；
回音“产品价格”
；
echo“品牌保修”
；
回显“客户名称”
；
回音“手机号码”
；
回声'；
}
//存储自定义字段
函数保存\我的\自定义\结帐\字段（$cart\项目\数据，$product\ id）{
如果（isset（$_请求['Product_name']））{
$cart_item_data['Product_name']=$u请求['Product_name']；
$cart\u item\u data['SNO\u number']=$\u请求['SNO\u number']；
$cart_item_data['Invoice_NO']=$_REQUEST['Invoice_NO']；
$cart_item_data['PurchageDate']=$u请求['PurchageDate']；
$cart_item_data['Location']=$u请求['Location']；
$cart_item_data['Product_price']=$u请求['Product_price']；
$cart_item_data['BrandWarranty']=$u请求['BrandWarranty']；
$cart_item_data['customer_name']=$u请求['customer_name']；
$cart_item_data['MobileNo']=$u请求['MobileNo']；
/*下面的语句确保每个“添加到购物车”操作都是唯一的行项目*/
$cart_item_data['unique_key']=md5（microtime（）.rand（））；
}
返回$cart\u item\u数据；
}
添加操作（'woocommerce\u add\u cart\u item\u data'，'save\u my\u custom\u checkout\u field'，10,2）；
//在购物车上呈现元数据并结帐
函数render\u meta\u on\u cart\u和\u checkout（$cart\u data，$cart\u item=null）{
$custom_items=array（）；
/*Woo 2.4.2更新*/
如果（！空（$cart_数据））{
$custom\u items=$cart\u数据；
}
如果（设置（$cart\u item['Product\u name']）和（！empty（$cart\u item['Product\u name']））{
$custom_items[]=array（“名称”=>“产品保修”、“价值”=>“-”）；
$custom_items[]=array（“name”=>'Product name'，“value”=>$cart_items['Product_name']）；
$custom_items[]=array（“name”=>“SNO”，“value”=>$cart_items['SNO_number]”）；
$custom_items[]=数组（“name”=>“发票号”，“value”=>$cart_items['Invoice_号]）；
$custom_items[]=array（“name”=>'Purchage Date'，“value”=>$cart_items['PurchageDate'）；
$custom_items[]=array（“name”=>'Location'，“value”=>$cart_items['Location']）；
$custom_items[]=数组（“name”=>“产品价格”，“value”=>$cart_items['Product_价格]）；
$custom_items[]=数组（“name”=>“Product name”，“value”=>$cart_items['BrandWarranty']）；
$custom_items[]=array（“name”=>'customer name'，“value”=>$cart_items['customer_name']）；
$custom_items[]=array（“name”=>'Mobile No'，“value”=>$cart_items['MobileNo']）；
}
返回$custom_项目；
}
添加过滤器（'woocommerce\u get\u item\u data'，'render\u meta\u on\u cart\u and \u checkout'，10,2）；
//显示为订单元
函数my_field_order_meta_handler（$item_id，$values，$cart_item_key）{
if（isset（$values['my_field_name']））{
wc_add_order_item_meta（$item_id，“Product_name”，$values['Product_name']）；
wc_add_order_item_meta（$item_id，“SNO_number”，$values['SNO_number']）；
wc_添加_订单_项目_元（$item_id，“Invoice_NO”，$values['Invoice_NO']）；
wc_add_order_item_meta（$item_id，“PurchageDate”，$values['PurchageDate']）；
wc_添加_订单_项目_元（$item_id，“Location”，$values['Location']）；
wc_添加_订单_项目_元（$item_id，“Product_price”，$values['Product_price']）；
wc_添加_订单_项目_元（$item_id，“BrandWarranty”，$values['BrandWarranty']）；
wc_add_order_item_meta（$item_id，“customer_name”，$values['customer_name']）；
wc_add_order_item_meta（$item_id，“MobileNo”，$values['MobileNo']）；
}
}
添加操作（'woocommerce\u add\u order\u item\u meta'，'my\u field\u order\u meta\u handler'，1,3）；
/**这就是我被困的地方**/
添加_操作（'woocmerce_checkout_process'、'my_custom_checkout_field_process'）；
函数my\u custom\u checkout\u field\u process（）{
全球商业；
//检查是否设置，如果未设置，则添加错误。此错误仅适用于公司
如果（$_POST['billing_company']））
如果（！$\u POST['Product\u name']）
$woocommerce->add_错误（uuu（'请输入您的XXX'）；
}
//使用字段值更新用户元
添加操作（'woocommerce\u checkout\u update\u user\u meta'、'my\u custom\u checkout\u field\u update\u user\u meta'）；
函数my\u custom\u checkout\u field\u update\u user\u meta（$user\u id）{
如果（$user\u id&$\u POST['Product\u name']））
更新用户元（$user\u id，'Product\u name'，esc\u attr（$\u POST['Product\u name']）；
更新用户元（$user\u id，'SNO\u number'，esc\u attr（$\u POST['SNO\u number']）；
更新用户元数据（$用户id，'发票编号'，esc属性（$POST['发票编号]）；
更新用户元（$用户id，'PurchageDate'，esc_attr（$\u POST['PurchageDate']）；
更新用户元（$user\u id，'Location'，esc\u attr（$\u POST['Location']）；
更新用户元（$user\u id，'Product\u price'，esc\u attr（$\u POST['Product\u price']）；
更新_user_meta（$user_id，'BrandWarranty'，esc_attr（$_POST['BrandWarranty']）；
更新用户元（$user\u id，'customer\u name'，esc\u attr（$\u POST['customer\u name']）；
更新用户元（$user\u id，'MobileNo'，esc\u attr（$u POST['MobileNo']）；
}
//使用字段值更新订单元
添加操作（'woocommerce\u checkout\u update\u order\u meta'、'my\u custom\u checkout\u field\u update\u order\u meta'）；
功能我的_
 // Add the field to the product
add_action('woocommerce_before_add_to_cart_button', 'my_custom_checkout_field');

function my_custom_checkout_field() {
    echo '<div id="my_custom_checkout_field"><h4>'.__('Warranty On Your Product:').'</h4>';
    echo  '<p><label>Product Name</label> <input type="text" name="Product_name"></p>';
    echo  '<p><label>Product SNO</label> <input type="text" name="SNO_number"></p>';
    echo  '<p><label>Invoice N0</label> <input type="text" name="Invoice_NO"></p>';
    echo  '<p><label>Date Of Purchage</label> <input type="text" name="PurchageDate"></p>';
    echo  '<p><label>Location</label> <input type="text" name="Location"></p>';
    echo  '<p><label>Product Price </label> <input type="text" name="Product_price"></p>';
    echo  '<p><label>Brand Warranty</label> <input type="text" name="BrandWarranty"></p>';
  echo  '<p><label>Customer Name</label> <input type="text" name="customer_name"></p>';
    echo  '<p><label>Mobile No</label> <input type="text" name="MobileNo"></p>';
    echo '</div>';
}

// Store custom field
function save_my_custom_checkout_field( $cart_item_data, $product_id ) {
    if( isset( $_REQUEST['Product_name'] ) ) {
        $cart_item_data['Product_name']    = $_REQUEST['Product_name'];
        $cart_item_data['SNO_number']      = $_REQUEST['SNO_number'];
        $cart_item_data['Invoice_NO']      = $_REQUEST['Invoice_NO'];
        $cart_item_data['PurchageDate']    = $_REQUEST['PurchageDate'];
        $cart_item_data['Location']        = $_REQUEST['Location'];
        $cart_item_data['Product_price']   = $_REQUEST['Product_price'];
        $cart_item_data['BrandWarranty']   = $_REQUEST['BrandWarranty'];
        $cart_item_data['customer_name']   = $_REQUEST['customer_name'];
        $cart_item_data['MobileNo']        = $_REQUEST['MobileNo'];
        /* below statement make sure every add to cart action as unique line item */
        $cart_item_data['unique_key'] = md5( microtime().rand() );
    }
    return $cart_item_data;
}
add_action( 'woocommerce_add_cart_item_data', 'save_my_custom_checkout_field', 10, 2 );

// Render meta on cart and checkout
function render_meta_on_cart_and_checkout( $cart_data, $cart_item = null ) {
    $custom_items = array();
    /* Woo 2.4.2 updates */
    if( !empty( $cart_data ) ) {
        $custom_items = $cart_data;
    }
    if( isset( $cart_item['Product_name']) &&(!empty($cart_item['Product_name']))) {
         $custom_items[] = array( "name" =>'Warranty On Your Product', "value" => '-' );
        $custom_items[] = array( "name" =>'Product name', "value" => $cart_item['Product_name'] );
        $custom_items[] = array( "name" =>'SNO', "value" => $cart_item['SNO_number'] );
        $custom_items[] = array( "name" =>'Invoice NO', "value" => $cart_item['Invoice_NO'] );
        $custom_items[] = array( "name" =>'Purchage Date', "value" => $cart_item['PurchageDate'] );
        $custom_items[] = array( "name" =>'Location', "value" => $cart_item['Location'] );
        $custom_items[] = array( "name" =>'Product price', "value" => $cart_item['Product_price'] );
        $custom_items[]= array( "name" =>'Product name', "value" => $cart_item['BrandWarranty'] );
        $custom_items[] = array( "name" =>'customer name', "value" => $cart_item['customer_name'] );
        $custom_items[] = array( "name" => 'Mobile No', "value" => $cart_item['MobileNo'] );
    }
    return $custom_items;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_on_cart_and_checkout', 10, 2 );

// Display as order meta
function my_field_order_meta_handler( $item_id, $values, $cart_item_key ) {
    if( isset( $values['my_field_name'] ) ) {
        wc_add_order_item_meta( $item_id, "Product_name", $values['Product_name'] );
         wc_add_order_item_meta( $item_id, "SNO_number", $values['SNO_number'] );
          wc_add_order_item_meta( $item_id, "Invoice_NO", $values['Invoice_NO'] );
           wc_add_order_item_meta( $item_id, "PurchageDate", $values['PurchageDate'] );
            wc_add_order_item_meta( $item_id, "Location", $values['Location'] );
             wc_add_order_item_meta( $item_id, "Product_price", $values['Product_price'] );
              wc_add_order_item_meta( $item_id, "BrandWarranty", $values['BrandWarranty'] );
               wc_add_order_item_meta( $item_id, "customer_name", $values['customer_name'] );
                wc_add_order_item_meta( $item_id, "MobileNo", $values['MobileNo'] );
    }
}
add_action( 'woocommerce_add_order_item_meta', 'my_field_order_meta_handler', 1, 3 );

/** THIS IS WHERE I'M STUCK **/

add_action('woocommerce_checkout_process', 'my_custom_checkout_field_process');
function my_custom_checkout_field_process() {
    global $woocommerce;

    // Check if set, if its not set add an error. This one is only requite for companies
    if ($_POST['billing_company'])
        if (!$_POST['Product_name']) 
            $woocommerce->add_error( __('Please enter your XXX.') );
}
// Update the user meta with field value
add_action('woocommerce_checkout_update_user_meta', 'my_custom_checkout_field_update_user_meta');
function my_custom_checkout_field_update_user_meta( $user_id ) {
    if ($user_id && $_POST['Product_name']) 
    update_user_meta( $user_id, 'Product_name', esc_attr($_POST['Product_name']) );
    update_user_meta( $user_id, 'SNO_number', esc_attr($_POST['SNO_number']) );
    update_user_meta( $user_id, 'Invoice_NO', esc_attr($_POST['Invoice_NO']) );
    update_user_meta( $user_id, 'PurchageDate', esc_attr($_POST['PurchageDate']) );
    update_user_meta( $user_id, 'Location', esc_attr($_POST['Location']) );
    update_user_meta( $user_id, 'Product_price', esc_attr($_POST['Product_price']) );
    update_user_meta( $user_id, 'BrandWarranty', esc_attr($_POST['BrandWarranty']) );
    update_user_meta( $user_id, 'customer_name', esc_attr($_POST['customer_name']) );
    update_user_meta( $user_id, 'MobileNo', esc_attr($_POST['MobileNo']) );
}

// Update the order meta with field value

add_action('woocommerce_checkout_update_order_meta', 'my_custom_checkout_field_update_order_meta');
function my_custom_checkout_field_update_order_meta( $order_id ) {
    if ($_POST['Product_name']) 
    update_post_meta( $order_id, 'My Name', esc_attr($_POST['Product_name']));
    update_post_meta( $order_id, 'SNO Number', esc_attr($_POST['SNO_number']));
    update_post_meta( $order_id, 'Invoice NO', esc_attr($_POST['Invoice_NO']));
    update_post_meta( $order_id, 'Purchage Date', esc_attr($_POST['PurchageDate']));
    update_post_meta( $order_id, 'Location', esc_attr($_POST['Location']));
    update_post_meta( $order_id, 'Product Price', esc_attr($_POST['Product_price']));
    update_post_meta( $order_id, 'Brand Warranty', esc_attr($_POST['BrandWarranty']));
    update_post_meta( $order_id, 'Customer Name', esc_attr($_POST['customer_name']));
    update_post_meta( $order_id, 'Mobile No', esc_attr($_POST['MobileNo']));
}

// Add the field to the product
add_action('woocommerce_before_add_to_cart_button', 'my_custom_checkout_field');

function my_custom_checkout_field() {
    echo '<div id="my_custom_checkout_field"><h4>'.__('Warranty On Your Product:').'</h4>';
    echo  '<p><label>Product Name</label> <input type="text" name="Product_name"></p>';
    echo  '<p><label>Product SNO</label> <input type="text" name="SNO_number"></p>';
    echo  '<p><label>Invoice N0</label> <input type="text" name="Invoice_NO"></p>';
    echo  '<p><label>Date Of Purchage</label> <input type="text" name="PurchageDate"></p>';
    echo  '<p><label>Location</label> <input type="text" name="Location"></p>';
    echo  '<p><label>Product Price </label> <input type="text" name="Product_price"></p>';
    echo  '<p><label>Brand Warranty</label> <input type="text" name="BrandWarranty"></p>';
  echo  '<p><label>Customer Name</label> <input type="text" name="customer_name"></p>';
    echo  '<p><label>Mobile No</label> <input type="text" name="MobileNo"></p>';
    echo '</div>';
}

// Store custom field
function save_my_custom_checkout_field( $cart_item_data, $product_id ) {
    if( isset( $_REQUEST['Product_name'] ) ) {
        $cart_item_data['Product_name']    = $_REQUEST['Product_name'];
        $cart_item_data['SNO_number']      = $_REQUEST['SNO_number'];
        $cart_item_data['Invoice_NO']      = $_REQUEST['Invoice_NO'];
        $cart_item_data['PurchageDate']    = $_REQUEST['PurchageDate'];
        $cart_item_data['Location']        = $_REQUEST['Location'];
        $cart_item_data['Product_price']   = $_REQUEST['Product_price'];
        $cart_item_data['BrandWarranty']   = $_REQUEST['BrandWarranty'];
        $cart_item_data['customer_name']   = $_REQUEST['customer_name'];
        $cart_item_data['MobileNo']        = $_REQUEST['MobileNo'];
        /* below statement make sure every add to cart action as unique line item */
        $cart_item_data['unique_key'] = md5( microtime().rand() );
    }
    return $cart_item_data;
}
add_action( 'woocommerce_add_cart_item_data', 'save_my_custom_checkout_field', 10, 2 );

// Render meta on cart and checkout
function render_meta_on_cart_and_checkout( $cart_data, $cart_item = null ) {
    $custom_items = array();
    /* Woo 2.4.2 updates */
    if( !empty( $cart_data ) ) {
        $custom_items = $cart_data;
    }
    if( isset( $cart_item['Product_name']) &&(!empty($cart_item['Product_name']))) {
         $custom_items[] = array( "name" =>'Warranty On Your Product', "value" => '-' );
        $custom_items[] = array( "name" =>'Product name', "value" => $cart_item['Product_name'] );
        $custom_items[] = array( "name" =>'SNO', "value" => $cart_item['SNO_number'] );
        $custom_items[] = array( "name" =>'Invoice NO', "value" => $cart_item['Invoice_NO'] );
        $custom_items[] = array( "name" =>'Purchage Date', "value" => $cart_item['PurchageDate'] );
        $custom_items[] = array( "name" =>'Location', "value" => $cart_item['Location'] );
        $custom_items[] = array( "name" =>'Product price', "value" => $cart_item['Product_price'] );
        $custom_items[]= array( "name" =>'Product name', "value" => $cart_item['BrandWarranty'] );
        $custom_items[] = array( "name" =>'customer name', "value" => $cart_item['customer_name'] );
        $custom_items[] = array( "name" => 'Mobile No', "value" => $cart_item['MobileNo'] );
    }
    return $custom_items;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_on_cart_and_checkout', 10, 2 );

// Display as order meta
function my_field_order_meta_handler( $item_id, $values, $cart_item_key ) {
    if( isset( $values['my_field_name'] ) ) {
        wc_add_order_item_meta( $item_id, "Product_name", $values['Product_name'] );
         wc_add_order_item_meta( $item_id, "SNO_number", $values['SNO_number'] );
          wc_add_order_item_meta( $item_id, "Invoice_NO", $values['Invoice_NO'] );
           wc_add_order_item_meta( $item_id, "PurchageDate", $values['PurchageDate'] );
            wc_add_order_item_meta( $item_id, "Location", $values['Location'] );
             wc_add_order_item_meta( $item_id, "Product_price", $values['Product_price'] );
              wc_add_order_item_meta( $item_id, "BrandWarranty", $values['BrandWarranty'] );
               wc_add_order_item_meta( $item_id, "customer_name", $values['customer_name'] );
                wc_add_order_item_meta( $item_id, "MobileNo", $values['MobileNo'] );
    }
}
add_action( 'woocommerce_add_order_item_meta', 'my_field_order_meta_handler', 1, 3 );

/** THIS IS WHERE I'M STUCK **/

add_action('woocommerce_checkout_process', 'my_custom_checkout_field_process');
function my_custom_checkout_field_process() {
    global $woocommerce;

    // Check if set, if its not set add an error. This one is only requite for companies
    if ($_POST['billing_company'])
        if (!$_POST['Product_name']) 
            $woocommerce->add_error( __('Please enter your XXX.') );
}
// Update the user meta with field value
add_action('woocommerce_checkout_update_user_meta', 'my_custom_checkout_field_update_user_meta');
function my_custom_checkout_field_update_user_meta( $user_id ) {
    if ($user_id && $_POST['Product_name']) 
    update_user_meta( $user_id, 'Product_name', esc_attr($_POST['Product_name']) );
    update_user_meta( $user_id, 'SNO_number', esc_attr($_POST['SNO_number']) );
    update_user_meta( $user_id, 'Invoice_NO', esc_attr($_POST['Invoice_NO']) );
    update_user_meta( $user_id, 'PurchageDate', esc_attr($_POST['PurchageDate']) );
    update_user_meta( $user_id, 'Location', esc_attr($_POST['Location']) );
    update_user_meta( $user_id, 'Product_price', esc_attr($_POST['Product_price']) );
    update_user_meta( $user_id, 'BrandWarranty', esc_attr($_POST['BrandWarranty']) );
    update_user_meta( $user_id, 'customer_name', esc_attr($_POST['customer_name']) );
    update_user_meta( $user_id, 'MobileNo', esc_attr($_POST['MobileNo']) );
}

// Update the order meta with field value

add_action('woocommerce_checkout_update_order_meta', 'my_custom_checkout_field_update_order_meta');
function my_custom_checkout_field_update_order_meta( $order_id ) {
    if ($_POST['Product_name']) 
    update_post_meta( $order_id, 'My Name', esc_attr($_POST['Product_name']));
    update_post_meta( $order_id, 'SNO Number', esc_attr($_POST['SNO_number']));
    update_post_meta( $order_id, 'Invoice NO', esc_attr($_POST['Invoice_NO']));
    update_post_meta( $order_id, 'Purchage Date', esc_attr($_POST['PurchageDate']));
    update_post_meta( $order_id, 'Location', esc_attr($_POST['Location']));
    update_post_meta( $order_id, 'Product Price', esc_attr($_POST['Product_price']));
    update_post_meta( $order_id, 'Brand Warranty', esc_attr($_POST['BrandWarranty']));
    update_post_meta( $order_id, 'Customer Name', esc_attr($_POST['customer_name']));
    update_post_meta( $order_id, 'Mobile No', esc_attr($_POST['MobileNo']));
}