添加“&copy；”时主题检查插件错误

Question

我给customizer.php添加了一个新设置

$wp_customize->add_setting( 'understrap_footer_text', array(
        'default'           => 'Copyright © 2017' ,
        'type'              => 'theme_mod',
        'sanitize_callback' => 'sanitize_textarea_field',
        'capability'        => 'edit_theme_options',
    ) );
        $wp_customize->add_control(
        new WP_Customize_Control(
            $wp_customize,
            'understrap_footer_text', array(
                'label'       => __( 'Footer Text', 'understrap' ),
                'description' => __( "No HTML", 'understrap'),
                'section'     => 'understrap_theme_post_options',
                'settings'    =>  'understrap_footer_text',
                'type'        => 'textarea',
                'priority'    => '10',
            )
        ) );

主题检查插件错误：REQUIRED: Found a Customizer setting that did not have a sanitization callback function. Every call to the add_setting() method needs to have a sanitization callback function passed.

当我从默认的© ()文本中删除add_setting()时，它没有显示错误。

十进制代码©也不能工作。

我需要显示©符号，有什么方法可以让这个工作吗？

Answer 1

您需要确保您有回调函数来处理您的卫生处理。

$wp_customize->add_setting( 'understrap_footer_text', array(
        'default'           => 'Copyright © 2017' ,
        'type'              => 'theme_mod',
        'sanitize_callback' => 'sanitize_textarea_field',
        'capability'        => 'edit_theme_options',
    ) );

所以你需要像这样的函数

/**
 * [sanitize_html description]
 * @param  [string] $input [input from textarea]
 * @return [string]        [sanitize all input no tags]
 */
function sanitize_textarea_field( $input ) {
    return wp_strip_all_tags( $input );
}