自定义登录，无验证码错误处理

Question

我创建了一个自定义登录页面，但是当验证码为空并且处理了很长时间时，我试图将错误消息$error_message传递到$error_msg 。

我正在使用两个wp插件，一个是无验证码的Recaptcha插件，另一个是客户端模板门户。

以下是custom-login.php的完整代码

<?php

class Ncr_Custom_Login_Captcha extends Ncr_No_Captcha_Recaptcha {

    public static function initialize() {

        // initialize if login is activated
        if ( isset(self::$plugin_options['captcha_login']) && self::$plugin_options['captcha_login'] == 'yes') {
            // add captcha header script to WordPress header
            add_action( 'wp_head', array( __CLASS__, 'header_script' ) );

            // adds the captcha to the custom login form
            add_action( 'custom_captcha_login', array( __CLASS__, 'display_captcha' ) );

            // authenticate the captcha answer
            add_action( 'custom_authenticate_user', array( __CLASS__, 'validate_captcha_custom_login' ), 10, 2 );
        }
    }

    /**
     * Verify the captcha answer
     *
     * @param $user string login username
     * @param $password string login password
     *
     * @return WP_Error|WP_user
     */

    public static function validate_captcha_custom_login( $user, $password ) {
        if ( ! isset( $_POST['g-recaptcha-response'] ) || ! self::captcha_verification() ) {}
        $error_msg .= 'I want to show this message';
        return false;
    }

}

我也尝试了以下

    public static function validate_captcha_custom_login( $user, $password ) {
        if ( ! isset( $_POST['g-recaptcha-response'] ) || ! self::captcha_verification() ) {}

        $error_msg .= 'I want to show this message';
        return false;
    }

以下是其他插件使用的登录表单模板页面

{if $action == 'login'}
    {if !empty($msg_ve)}
        <p class="message">{$msg_ve}</p>
    {/if}
    <form method="post" action="{if !empty($login_url)}{$login_url}{/if}" id="loginform" name="loginform">
        {if !empty($somefields)}{$somefields}{/if}
        {if !empty($error_msg)}
            <p class="message wpc_error">{$error_msg}</p>
        {/if}
        {if !empty($custom_login_error_msg)}
            <p class="message wpc_error">{$custom_login_error_msg}</p>
        {/if}
        <p>
            <label for="user_login">{if !empty($labels.username)}{$labels.username}{/if}<br>
            <input type="text" tabindex="10" size="20" value="" class="input" id="user_login" name="log"></label>
        </p>
        <p>
            <label for="user_pass">{if !empty($labels.password)}{$labels.password}{/if}<br>
            <input type="password" tabindex="20" size="20" value="" class="input" id="user_pass" name="pwd"></label>
        </p>
        {do_action( 'custom_captcha_login' )}
        <p class="forgetmenot"><label for="rememberme"><input type="checkbox" tabindex="90" value="forever" id="rememberme" name="rememberme"> {if !empty($labels.remember)}{$labels.remember}{/if}</label></p>
        <p class="submit">
            <label>
                <input type="submit" tabindex="100" value="Log In" class="button-primary" id="wp-submit" name="wp-submit">
                <input type="hidden" value="" name="redirect_to">
            </label>
        </p>

        {if isset($lostpassword_href) && !empty($lostpassword_href)}
        <p id="nav">
            <label>
                <a title="Password Lost and Found" href="{$lostpassword_href}">Lost your password?</a>
            </label>
        </p>
        {/if}
    </form>
{elseif $action == 'lostpassword' && isset($lostpassword_href) && !empty($lostpassword_href) }
    <form method="post" action="{if !empty($login_url)}{$login_url}{/if}" id="loginform" name="loginform">
        {if !empty($error_msg)}
            <p class="message wpc_error">{$error_msg}</p>
        {/if}
        <p>
            <label for="user_login">{if !empty($labels.email)}{$labels.email}{/if}<br>
            <input type="text" tabindex="10" size="35" value="" class="input" id="user_login" name="user_login"></label>
        </p>
        <p class="submit">
            <label>
                <input type="submit" tabindex="100" value="{if !empty($labels.get_new_password)}{$labels.get_new_password}{/if}" class="button button-primary button-large" id="wp-submit" name="wp-submit">
            </label>
        </p>
        <p id="nav">
            <label>
                <a title="Back to Login Page" href="{$login_href}">Remember your password?</a>
            </label>
        </p>
    </form>
{elseif ( $action == 'rp' || $action == 'resetpass' ) && !empty($lostpassword_href) }
    <form method="post" action="{if !empty($login_url)}{$login_url}{/if}" id="loginform" name="loginform">
        {if !empty($error_msg)}
            <p class="message wpc_error">{$error_msg}</p>
        {/if}
        {if !in_array($error_msg, $check_invalid)}
            <input type="hidden" id="user_login" value="{if !empty($user_login)}{$user_login}{/if}" autocomplete="off" />
            <p>
                <label for="pass1">{if !empty($labels.new_password)}{$labels.new_password}{/if}<br />
                <input type="password" name="pass1" id="pass1" class="input" size="35" value="" autocomplete="off" /></label>
            </p>
            <p>
                <label for="pass2">{if !empty($labels.confirm_new_password)}{$labels.confirm_new_password}{/if}<br />
                <input type="password" name="pass2" id="pass2" class="input" size="35" value="" autocomplete="off" /></label>
            </p>

            <div id="pass-strength-result">{if !empty($labels.strength_indicator)}{$labels.strength_indicator}{/if}</div>
            <p class="description indicator-hint">{if !empty($labels.hint_indicator)}{$labels.hint_indicator}{/if}</p>
            <br class="clear" />
            <p class="submit"><label><input type="submit" name="wp-submit" id="wp-submit" class="button button-primary button-large" value="{if !empty($labels.reset_password)}{$labels.reset_password}{/if}" /></label>
            </p>
        </form>
    {/if}
{/if}

Answer 1

试试这个，这对我有用。

验证中

if(validationfunctions failed)
{
$error_msg .= '<p class="error">I want to show this message</p>';
return false;
}

和页面

if (!empty($error_msg)) {
echo $error_msg;
}

不要在函数内部设置错误消息。