我正在使用的当前方法来处理此处概述的所有问题,即使使用空白的用户名/密码也可以很好地工作,并且不依赖javascript(尽管js可能会很好)。
add_action( 'wp_login_failed', 'custom_login_failed' );
function custom_login_failed( $username )
{
$referrer = wp_get_referer();
if ( $referrer && ! strstr($referrer, 'wp-login') && ! strstr($referrer,'wp-admin') )
{
wp_redirect( add_query_arg('login', 'failed', $referrer) );
exit;
}
}
关键是此过滤器可更改如何处理空白的用户名/密码:
add_filter( 'authenticate', 'custom_authenticate_username_password', 30, 3);
function custom_authenticate_username_password( $user, $username, $password )
{
if ( is_a($user, 'WP_User') ) { return $user; }
if ( empty($username) || empty($password) )
{
$error = new WP_Error();
$user = new WP_Error('authentication_failed', __('<strong>ERROR</strong>: Invalid username or incorrect password.'));
return $error;
}
}
通过将用户重定向到您的自定义登录页面,并将该页面用于login_failed重定向,您可以更进一步并完全替换wp-login.php。完整代码:
/**
* Custom Login Page Actions
*/
// Change the login url sitewide to the custom login page
add_filter( 'login_url', 'custom_login_url', 10, 2 );
// Redirects wp-login to custom login with some custom error query vars when needed
add_action( 'login_head', 'custom_redirect_login', 10, 2 );
// Updates login failed to send user back to the custom form with a query var
add_action( 'wp_login_failed', 'custom_login_failed', 10, 2 );
// Updates authentication to return an error when one field or both are blank
add_filter( 'authenticate', 'custom_authenticate_username_password', 30, 3);
// Automatically adds the login form to "login" page
add_filter( 'the_content', 'custom_login_form_to_login_page' );
/**
* Custom Login Page Functions
*/
function custom_login_url( $login_url='', $redirect='' )
{
$page = get_page_by_path('login');
if ( $page )
{
$login_url = get_permalink($page->ID);
if (! empty($redirect) )
$login_url = add_query_arg('redirect_to', urlencode($redirect), $login_url);
}
return $login_url;
}
function custom_redirect_login( $redirect_to='', $request='' )
{
if ( 'wp-login.php' == $GLOBALS['pagenow'] )
{
$redirect_url = custom_login_url();
if (! empty($_GET['action']) )
{
if ( 'lostpassword' == $_GET['action'] )
{
return;
}
elseif ( 'register' == $_GET['action'] )
{
$register_page = get_page_by_path('register');
$redirect_url = get_permalink($register_page->ID);
}
}
elseif (! empty($_GET['loggedout']) )
{
$redirect_url = add_query_arg('action', 'loggedout', custom_login_url());
}
wp_redirect( $redirect_url );
exit;
}
}
function custom_login_failed( $username )
{
$referrer = wp_get_referer();
if ( $referrer && ! strstr($referrer, 'wp-login') && ! strstr($referrer, 'wp-admin') )
{
if ( empty($_GET['loggedout']) )
wp_redirect( add_query_arg('action', 'failed', custom_login_url()) );
else
wp_redirect( add_query_arg('action', 'loggedout', custom_login_url()) );
exit;
}
}
function custom_authenticate_username_password( $user, $username, $password )
{
if ( is_a($user, 'WP_User') ) { return $user; }
if ( empty($username) || empty($password) )
{
$error = new WP_Error();
$user = new WP_Error('authentication_failed', __('<strong>ERROR</strong>: Invalid username or incorrect password.'));
return $error;
}
}
function custom_login_form_to_login_page( $content )
{
if ( is_page('login') && in_the_loop() )
{
$output = $message = "";
if (! empty($_GET['action']) )
{
if ( 'failed' == $_GET['action'] )
$message = "There was a problem with your username or password.";
elseif ( 'loggedout' == $_GET['action'] )
$message = "You are now logged out.";
elseif ( 'recovered' == $_GET['action'] )
$message = "Check your e-mail for the confirmation link.";
}
if ( $message ) $output .= '<div class="message"><p>'. $message .'</p></div>';
$output .= wp_login_form('echo=0&redirect='. site_url());
$output .= '<a href="'. wp_lostpassword_url( add_query_arg('action', 'recovered', get_permalink()) ) .'" title="Recover Lost Password">Lost Password?</a>';
$content .= $output;
}
return $content;
}
自定义并添加以下内容,以将徽标添加到wp-login页面以恢复密码:
// calling it only on the login page
add_action( 'login_enqueue_scripts', 'custom_login_css', 10 );
function custom_login_css() { wp_enqueue_style( 'custom_login_css', get_template_directory_uri() .'/library/css/login.css', false ); }
// changing the logo link from wordpress.org to your site
add_filter( 'login_headerurl', 'custom_login_logo_url' );
function custom_login_logo_url() { return home_url(); }
// changing the alt text on the logo to show your site name
add_filter( 'login_headertitle', 'custom_login_title' );
function custom_login_title() { return get_option('blogname'); }
登录徽标CSS:
.login h1 a {
background: url(../images/login-logo.png) no-repeat top center;
width: 274px;
height: 63px;
text-indent: -9999px;
overflow: hidden;
padding-bottom: 15px;
display: block;
}
编辑:我只是在另一个站点上从头开始实现了这一点,发现上面的“更进一步”更加完整,并修复了“ add_actions”中的小语法错误。添加了一些注释和一种自动将登录表单添加到登录页面而无需单独的模板文件的方法。登录表单方法应该在大多数情况下都可以使用,因为它附加在“ the_content”上,如果登录页面上有多个循环,则可能会引起问题,请在这种情况下使用page-login.php模板。