Question

我正在尝试为wordpress开发一个登录ajax表单。似乎该插件工作正常。如果我插入正确的用户名和密码登录正常工作并显示正确的消息，然后重定向到正确的页面，但如果我插入不正确的用户名和密码值没有发生任何事情，并且不会出现错误消息。

似乎函数is_wp_error不会回显错误。

你知道为什么吗？在我的代码下面

先谢谢。

PHP

function ajax_login_init(){
wp_enqueue_script( 'ajax-login', get_template_directory_uri() . '/js/jquery.ajax.login.js', array( 'jquery' ) , $ver , true );
wp_localize_script('ajax-login', 'loginajax', array( 'ajaxurl' => admin_url( 'admin-ajax.php' ), ) );
// Enable the user with no privileges to run ajax_login() in AJAX
add_action( 'wp_ajax_nopriv_met_login_member', 'met_login_member' );
}

if (!is_user_logged_in()) {
add_action('init', 'ajax_login_init');

}

function met_login_member() {
    $user_login     = $_POST['met_user_login']; 
    $user_pass      = $_POST['met_user_pass'];

    if( !check_ajax_referer( 'ajax-login-nonce', 'login-security', false) ) {
        echo json_encode(array('error' => true, 'message'=> '<div class="alert alert-danger">'.__('Session token has expired, please reload the page and try again', 'met').'</div>'));
    }

    else if( empty($user_login) || empty($user_pass) ){
        echo json_encode(array('error' => true, 'message'=> '<div class="alert alert-danger">'.__('Please fill all form fields', 'met').'</div>'));
    } else { // Now we can insert this account

        $creds = array();
       $creds['user_login'] = $user_login;
       $creds['user_password'] = $user_pass;
       $creds['remember'] = true;
       $user = wp_signon( $creds, false );

        if( is_wp_error($user) ) {
            echo json_encode(array('error' => true, 'message'=> '<div class="alert alert-danger">'.$user->get_error_message().'</div>'));
        } else {
            echo json_encode(array('error' => false, 'message'=> '<div class="alert alert-success">'.__('Login successful, reloading page...', 'met').'</div>'));
        }
    }

    die();
}

HTML

<div class="user-modal">

        <div class="user-modal-container">

            <ul class="switcher">

                <li><span><?php _e('Sign in', 'met'); ?></span></li>

                <li><span><?php _e('New Account', 'met'); ?></span></li>

            </ul>

            <div class="modal-login">

                <form id="login-form" class="modal-form" action="<?php echo home_url( '/' ); ?>" method="post" />

                    <p class="fieldset">

                        <label class="image-replace email" for="signin-email"><?php _e('Username', 'met'); ?></label>

                        <input id="user-login" class="full-width has-padding has-border" type="text" name="met_user_login" placeholder="<?php _e('Username', 'met'); ?>" value="" size="20" tabindex="10" required />

                    </p>

                    <p class="fieldset">

                        <label class="image-replace password" for="signin-password"><?php _e('Password', 'met'); ?></label>

                        <input id="user-pass" class="full-width has-padding has-border" type="password" name="met_user_pass" placeholder="<?php _e('Password', 'met'); ?>" value="" size="20" tabindex="20" required />

                        <span class="show-password"><?php _e('Show', 'met'); ?></span>

                    </p>

                    <p class="fieldset">

                        <label class="checkbox" for="rememberme">

                            <input name="rememberme" type="checkbox" id="rememberme" value="forever" tabindex="90"><?php _e('Remember me', 'met'); ?>

                        </label>

                    </p>

                    <p class="fieldset">

                        <button id="wp-submit" class="full-width" data-loading-text="<?php _e('Loading...', 'met') ?>" type="submit"><?php _e('Sign In', 'met'); ?></button>

                        <input type="hidden" name="action" value="met_login_member" />

                    </p>

                    <?php wp_nonce_field( 'ajax-login-nonce', 'login-security' ); ?>

                </form>

                <div class="errors"></div>

                <p class="modal-form-bottom-message"><span><?php _e('Lost your password?', 'met'); ?></span></p>

            </div>

    </div>
</div>

JS

$('button').on('click', function(e) {

    e.preventDefault();

    $.post(loginajax.ajaxurl, $('#login-form').serialize(), function(data) {

        var obj = $.parseJSON(data);

        $('.modal-login .errors').html(obj.message);

        if(obj.error === false) {
            window.location.reload(true);
        } else if(obj.error === true) {
            $('.alert-danger').delay(2000).fadeOut('slow',function(){$(this).hide();});
        }


    });

});

Answer 1

看来你正朝着正确的方向前进。我对您的代码进行了一些更改，以填补一些空白。强烈建议在WordPress中提交敏感（或任何）数据时清理从$POST收集的所有数据。

此外，我们通过简单检查是否存在用户名或电子邮件来验证收集的凭据，如果检查正常，我们会定义在成功登录时验证用户所需的用户数据，谁也是直接访问/wp-admin/时登录管理仪表板。我们通过清除任何旧的身份验证cookie并为当前用户设置新的身份验证cookie来实现此目的。

虽然这里没有什么新内容，但在WordPress中通过Ajax验证用户时，这些步骤已被证明可以减少最常见的问题。

我已经测试了该函数，它似乎没有is_wp_error()抛出的错误消息的问题。此外，我添加了一个可选的简单方法来捕获最常见的错误消息，然后自定义它们。我希望它能让你前进！

function met_login_member() {

// First check the nonce, if it fails the function will break
if( !check_ajax_referer( 'ajax-login-nonce', 'login-security' ) ) {

    echo json_encode(array('error' => true, 'message'=> '<div class="alert alert-danger">'.__('Session token has expired, please reload the page and try again', 'met').'</div>'));

    die();

}

// Nonce is checked, get the POST data and sign the user on
$creds = array();
$creds['user_login']    = !empty( $_POST['met_user_login'] ) ? sanitize_user( trim($_POST['met_user_login']) ) : NULL; 
$creds['user_password'] = !empty( $_POST['met_user_pass'] ) ? sanitize_text_field( trim($_POST['met_user_pass']) ) : NULL; 
$creds['remember'] = true;

// Pass login details through wp_signon()
// wp_signon() accepts an optional boolean parameter false OR true, whether to use a secure cookie in case of running a website over SSL.
$user_creds = wp_signon( $creds, false );

$user_login     = (string) sanitize_user( $_POST['met_user_login'] );
$user_pass      = (string) sanitize_text_field( trim($_POST['met_user_pass']) );

// ---- CHECK IF USERNAME OR EMAIL EXISTS ---- //
if (username_exists($user_login)) {

    $user_exists = (bool)   true;
    $user        = (object) get_user_by('login', $user_login);

} elseif (email_exists($user_login)) {

    $user_exists = (bool)   true;
    $user        = (object) get_user_by('email', $user_login);

} else {

    $error = new WP_Error( 'no_user_found', 'Username or Email was not found, please try again', 'Page Data' );

    //echo json_encode( array( 'error' => true, 'message'=> '<div class="alert alert-danger">'.__('Username or Email was not found, please try again', 'met').'</div>') );
    //die();

} // end else

if ($user_exists === (bool) true) {

    // Define user data

    $user_id = $user->ID;
    $user_data = get_userdata($user_id);

    $username = $user_data->user_login;
    $userpass = $user_data->user_pass;

}

// ---- CHECK FOR EMPTY / INCORRECT DATA  ---- //
if( empty( $user_login ) && empty( $user_pass ) ){

    echo json_encode( array( 'error' => true, 'message'=> '<div class="alert alert-danger">'.__('The username and password cannot be empty', 'met').'</div>') );
    die();

} elseif ( is_wp_error( $user_signon ) ) {

    echo json_encode( array( 'error' => true, 'message'=> '<div class="alert alert-danger">'.$user_signon->get_error_message().'</div>') );
    die();

    // Optionally catch & customize error messages

    // $signon_errors = $user_creds->get_error_codes();

    // if ( in_array( 'invalid_username', $signon_errors ) ) {
    //     echo json_encode( array( 'error' => true, 'message'=> '<div class="alert alert-danger">'.__('Wrong username or email', 'met').'</div>') );
    //     die();    

    // } elseif ( in_array( 'empty_username', $signon_errors ) ) {
    //     echo json_encode( array( 'error' => true, 'message'=> '<div class="alert alert-danger">'.__('The username or email cannot be empty', 'met').'</div>') );
    //     die();

    // } elseif ( in_array( 'empty_password', $signon_errors ) ) {
    //     echo json_encode( array( 'error' => true, 'message'=> '<div class="alert alert-danger">'.__('The password field cannot be empty', 'met').'</div>') );
    //     die();

    // } elseif ( in_array( 'incorrect_password', $signon_errors ) ) {
    //     echo json_encode( array( 'error' => true, 'message'=> '<div class="alert alert-danger">'.__('Wrong password', 'met').'</div>') );
    //     die();   

    // } else {
    //     echo json_encode( array( 'error' => true, 'message'=> '<div class="alert alert-danger">'.__('Wrong username or password', 'met').'</div>') );
    //     die();

    // }

} else {

    wp_clear_auth_cookie();
    wp_set_current_user( $user_id, $username );
    wp_set_auth_cookie( $user_id );

    echo json_encode(array('error' => false, 'message'=> '<div class="alert alert-success">'.__('Login successful, reloading page...', 'met').'</div>'));

    die();

}

    die();

}

Wordpress Ajax登录错误消息

1 个答案: