我正在使用虚拟和可下载产品创建带有woocommerce的购物网站 我想在购买后删除它，没有人可以再次购买相同的产品
答案 0 :(得分：0)
您是否考虑过将每件商品的库存数量设为1？然后，您可以在WooCommerce设置中启用隐藏目录中的缺货商品。
可以使用代码，但这是一个更优雅的解决方案，因为您可能希望在查看收到的订单时提供产品数据等。
答案 1 :(得分：0)
这里是数字下载的代码，我可以在哪里添加代码以便下载一次
<?php
if（！defined（＆＃39; ABSPATH＆＃39;））{ 出口; //如果直接访问则退出 }
/ ** *下载处理程序。 * *处理数字下载。 * * @class WC_Download_Handler * @version 2.2.0 * @package WooCommerce / Classes * @category类 * @author WooThemes * / WC_Download_Handler等级{
/**
* Hook in methods.
*/
public static function init() {
if ( isset( $_GET['download_file'] ) && isset( $_GET['order'] ) && isset( $_GET['email'] ) ) {
add_action( 'init', array( __CLASS__, 'download_product' ) );
}
add_action( 'woocommerce_download_file_redirect', array( __CLASS__, 'download_file_redirect' ), 10, 2 );
add_action( 'woocommerce_download_file_xsendfile', array( __CLASS__, 'download_file_xsendfile' ), 10, 2 );
add_action( 'woocommerce_download_file_force', array( __CLASS__, 'download_file_force' ), 10, 2 );
}
/**
* Check if we need to download a file and check validity.
*/
public static function download_product() {
$product_id = absint( $_GET['download_file'] );
$_product = wc_get_product( $product_id );
$download_data = self::get_download_data( array(
'product_id' => $product_id,
'order_key' => wc_clean( $_GET['order'] ),
'email' => sanitize_email( str_replace( ' ', '+', $_GET['email'] ) ),
'download_id' => wc_clean( isset( $_GET['key'] ) ? preg_replace( '/\s+/', ' ', $_GET['key'] ) : '' )
) );
if ( $_product && $download_data ) {
self::check_current_user_can_download( $download_data );
do_action( 'woocommerce_download_product', $download_data->user_email, $download_data->order_key, $download_data->product_id, $download_data->user_id, $download_data->download_id, $download_data->order_id );
self::count_download( $download_data );
self::download( $_product->get_file_download_path( $download_data->download_id ), $download_data->product_id );
} else {
self::download_error( __( 'Invalid download link.', 'woocommerce' ) );
}
}
/**
* Get a download from the database.
*
* @param array $args Contains email, order key, product id and download id
* @return object
* @access private
*/
private static function get_download_data( $args = array() ) {
global $wpdb;
$query = "SELECT * FROM " . $wpdb->prefix . "woocommerce_downloadable_product_permissions ";
$query .= "WHERE user_email = %s ";
$query .= "AND order_key = %s ";
$query .= "AND product_id = %s ";
if ( $args['download_id'] ) {
$query .= "AND download_id = %s ";
}
return $wpdb->get_row( $wpdb->prepare( $query, array( $args['email'], $args['order_key'], $args['product_id'], $args['download_id'] ) ) );
}
/**
* Perform checks to see if the current user can download the file.
* @param object $download_data
* @access private
*/
private static function check_current_user_can_download( $download_data ) {
self::check_order_is_valid( $download_data );
self::check_downloads_remaining( $download_data );
self::check_download_expiry( $download_data );
self::check_download_login_required( $download_data );
}
/**
* Check if an order is valid for downloading from.
* @param array $download_data
* @access private
*/
private static function check_order_is_valid( $download_data ) {
if ( $download_data->order_id && ( $order = wc_get_order( $download_data->order_id ) ) && ! $order->is_download_permitted() ) {
self::download_error( __( 'Invalid order.', 'woocommerce' ), '', 403 );
}
}
/**
* Check if there are downloads remaining.
* @param array $download_data
* @access private
*/
private static function check_downloads_remaining( $download_data ) {
if ( '0' == $download_data->downloads_remaining ) {
self::download_error( __( 'Sorry, you have reached your download limit for this file', 'woocommerce' ), '', 403 );
}
}
/**
* Check if the download has expired.
* @param array $download_data
* @access private
*/
private static function check_download_expiry( $download_data ) {
if ( $download_data->access_expires > 0 && strtotime( $download_data->access_expires ) < strtotime( 'midnight', current_time( 'timestamp' ) ) ) {
self::download_error( __( 'Sorry, this download has expired', 'woocommerce' ), '', 403 );
}
}
/**
* Check if a download requires the user to login first.
* @param array $download_data
* @access private
*/
private static function check_download_login_required( $download_data ) {
if ( $download_data->user_id && 'yes' === get_option( 'woocommerce_downloads_require_login' ) ) {
if ( ! is_user_logged_in() ) {
if ( wc_get_page_id( 'myaccount' ) ) {
wp_safe_redirect( add_query_arg( 'wc_error', urlencode( __( 'You must be logged in to download files.', 'woocommerce' ) ), wc_get_page_permalink( 'myaccount' ) ) );
exit;
} else {
self::download_error( __( 'You must be logged in to download files.', 'woocommerce' ) . ' <a href="' . esc_url( wp_login_url( wc_get_page_permalink( 'myaccount' ) ) ) . '" class="wc-forward">' . __( 'Login', 'woocommerce' ) . '</a>', __( 'Log in to Download Files', 'woocommerce' ), 403 );
}
} elseif ( ! current_user_can( 'download_file', $download_data ) ) {
self::download_error( __( 'This is not your download link.', 'woocommerce' ), '', 403 );
}
}
}
/**
* Log the download + increase counts.
* @param object $download_data
*/
public static function count_download( $download_data ) {
global $wpdb;
$wpdb->update(
$wpdb->prefix . 'woocommerce_downloadable_product_permissions',
array(
'download_count' => $download_data->download_count + 1,
'downloads_remaining' => $download_data->downloads_remaining > 0 ? $download_data->downloads_remaining - 1 : $download_data->downloads_remaining,
),
array(
'permission_id' => absint( $download_data->permission_id ),
),
array( '%d', '%s' ),
array( '%d' )
);
}
/**
* Download a file - hook into init function.
* @param string $file_path URL to file
* @param integer $product_id of the product being downloaded
*/
public static function download( $file_path, $product_id ) {
if ( ! $file_path ) {
self::download_error( __( 'No file defined', 'woocommerce' ) );
}
$filename = basename( $file_path );
if ( strstr( $filename, '?' ) ) {
$filename = current( explode( '?', $filename ) );
}
$filename = apply_filters( 'woocommerce_file_download_filename', $filename, $product_id );
$file_download_method = apply_filters( 'woocommerce_file_download_method', get_option( 'woocommerce_file_download_method', 'force' ), $product_id );
// Add action to prevent issues in IE
add_action( 'nocache_headers', array( __CLASS__, 'ie_nocache_headers_fix' ) );
// Trigger download via one of the methods
do_action( 'woocommerce_download_file_' . $file_download_method, $file_path, $filename );
}
/**
* Redirect to a file to start the download.
* @param string $file_path
* @param string $filename
*/
public static function download_file_redirect( $file_path, $filename = '' ) {
header( 'Location: ' . $file_path );
exit;
}
/**
* Parse file path and see if its remote or local.
* @param string $file_path
* @return array
*/
public static function parse_file_path( $file_path ) {
$wp_uploads = wp_upload_dir();
$wp_uploads_dir = $wp_uploads['basedir'];
$wp_uploads_url = $wp_uploads['baseurl'];
// Replace uploads dir, site url etc with absolute counterparts if we can
$replacements = array(
$wp_uploads_url => $wp_uploads_dir,
network_site_url( '/', 'https' ) => ABSPATH,
network_site_url( '/', 'http' ) => ABSPATH,
site_url( '/', 'https' ) => ABSPATH,
site_url( '/', 'http' ) => ABSPATH
);
$file_path = str_replace( array_keys( $replacements ), array_values( $replacements ), $file_path );
$parsed_file_path = parse_url( $file_path );
$remote_file = true;
// See if path needs an abspath prepended to work
if ( file_exists( ABSPATH . $file_path ) ) {
$remote_file = false;
$file_path = ABSPATH . $file_path;
// Check if we have an absolute path
} elseif ( ( ! isset( $parsed_file_path['scheme'] ) || ! in_array( $parsed_file_path['scheme'], array( 'http', 'https', 'ftp' ) ) ) && isset( $parsed_file_path['path'] ) && file_exists( $parsed_file_path['path'] ) ) {
$remote_file = false;
$file_path = $parsed_file_path['path'];
}
return array(
'remote_file' => $remote_file,
'file_path' => $file_path
);
}
/**
* Download a file using X-Sendfile, X-Lighttpd-Sendfile, or X-Accel-Redirect if available.
* @param string $file_path
* @param string $filename
*/
public static function download_file_xsendfile( $file_path, $filename ) {
$parsed_file_path = self::parse_file_path( $file_path );
if ( function_exists( 'apache_get_modules' ) && in_array( 'mod_xsendfile', apache_get_modules() ) ) {
self::download_headers( $parsed_file_path['file_path'], $filename );
header( "X-Sendfile: " . $parsed_file_path['file_path'] );
exit;
} elseif ( stristr( getenv( 'SERVER_SOFTWARE' ), 'lighttpd' ) ) {
self::download_headers( $parsed_file_path['file_path'], $filename );
header( "X-Lighttpd-Sendfile: " . $parsed_file_path['file_path'] );
exit;
} elseif ( stristr( getenv( 'SERVER_SOFTWARE' ), 'nginx' ) || stristr( getenv( 'SERVER_SOFTWARE' ), 'cherokee' ) ) {
self::download_headers( $parsed_file_path['file_path'], $filename );
$xsendfile_path = trim( preg_replace( '`^' . str_replace( '\\', '/', getcwd() ) . '`', '', $parsed_file_path['file_path'] ), '/' );
header( "X-Accel-Redirect: /$xsendfile_path" );
exit;
}
// Fallback
self::download_file_force( $file_path, $filename );
}
/**
* Force download - this is the default method.
* @param string $file_path
* @param string $filename
*/
public static function download_file_force( $file_path, $filename ) {
$parsed_file_path = self::parse_file_path( $file_path );
self::download_headers( $parsed_file_path['file_path'], $filename );
if ( ! self::readfile_chunked( $parsed_file_path['file_path'] ) ) {
if ( $parsed_file_path['remote_file'] ) {
self::download_file_redirect( $file_path );
} else {
self::download_error( __( 'File not found', 'woocommerce' ) );
}
}
exit;
}
/**
* Get content type of a download.
* @param string $file_path
* @return string
* @access private
*/
private static function get_download_content_type( $file_path ) {
$file_extension = strtolower( substr( strrchr( $file_path, "." ), 1 ) );
$ctype = "application/force-download";
foreach ( get_allowed_mime_types() as $mime => $type ) {
$mimes = explode( '|', $mime );
if ( in_array( $file_extension, $mimes ) ) {
$ctype = $type;
break;
}
}
return $ctype;
}
/**
* Set headers for the download.
* @param string $file_path
* @param string $filename
* @access private
*/
private static function download_headers( $file_path, $filename ) {
self::check_server_config();
self::clean_buffers();
nocache_headers();
header( "X-Robots-Tag: noindex, nofollow", true );
header( "Content-Type: " . self::get_download_content_type( $file_path ) );
header( "Content-Description: File Transfer" );
header( "Content-Disposition: attachment; filename=\"" . $filename . "\";" );
header( "Content-Transfer-Encoding: binary" );
if ( $size = @filesize( $file_path ) ) {
header( "Content-Length: " . $size );
}
}
/**
* Check and set certain server config variables to ensure downloads work as intended.
*/
private static function check_server_config() {
if ( function_exists( 'set_time_limit' ) && false === strpos( ini_get( 'disable_functions' ), 'set_time_limit' ) && ! ini_get( 'safe_mode' ) ) {
@set_time_limit( 0 );
}
if ( function_exists( 'get_magic_quotes_runtime' ) && get_magic_quotes_runtime() && version_compare( phpversion(), '5.4', '<' ) ) {
set_magic_quotes_runtime( 0 );
}
if ( function_exists( 'apache_setenv' ) ) {
@apache_setenv( 'no-gzip', 1 );
}
@ini_set( 'zlib.output_compression', 'Off' );
@session_write_close();
}
/**
* Clean all output buffers.
*
* Can prevent errors, for example: transfer closed with 3 bytes remaining to read.
*
* @access private
*/
private static function clean_buffers() {
if ( ob_get_level() ) {
$levels = ob_get_level();
for ( $i = 0; $i < $levels; $i++ ) {
@ob_end_clean();
}
} else {
@ob_end_clean();
}
}
/**
* readfile_chunked.
*
* Reads file in chunks so big downloads are possible without changing PHP.INI - http://codeigniter.com/wiki/Download_helper_for_large_files/.
*
* @param string $file
* @return bool Success or fail
*/
public static function readfile_chunked( $file ) {
$chunksize = 1024 * 1024;
$handle = @fopen( $file, 'r' );
if ( false === $handle ) {
return false;
}
while ( ! @feof( $handle ) ) {
echo @fread( $handle, $chunksize );
if ( ob_get_length() ) {
ob_flush();
flush();
}
}
return @fclose( $handle );
}
/**
* Filter headers for IE to fix issues over SSL.
*
* IE bug prevents download via SSL when Cache Control and Pragma no-cache headers set.
*
* @param array $headers
* @return array
*/
public static function ie_nocache_headers_fix( $headers ) {
if ( is_ssl() && ! empty( $GLOBALS['is_IE'] ) ) {
$headers['Cache-Control'] = 'private';
unset( $headers['Pragma'] );
}
return $headers;
}
/**
* Die with an error message if the download fails.
* @param string $message
* @param string $title
* @param integer $status
* @access private
*/
private static function download_error( $message, $title = '', $status = 404 ) {
if ( ! strstr( $message, '<a ' ) ) {
$message .= ' <a href="' . esc_url( home_url() ) . '" class="wc-forward">' . __( 'Go to homepage', 'woocommerce' ) . '</a>';
}
wp_die( $message, $title, array( 'response' => $status ) );
}
}
WC_Download_Handler ::的init（）;