我刚开始使用WordPress,我正在尝试向后端添加一些控件来自定义我的网站。我添加的第一个控件 - 图像选择器 - 工作正常,但第二个设置 - background-size-不保存值,因此刷新页面后,图像将从style.css文件恢复为默认值。所有设置都正确应用,直到我刷新。
到目前为止,这是我的代码,背景图像和背景大小:
style.css中:
section#banner {
background-image: url(images/banner.jpg);
background-size: auto;
background-repeat: no-repeat;
background-position: left top;
}
的functions.php:
/**
* Customizer Options for #banner
* Theme Options Customizer Implementation.
*
* @param WP_Customize_Manager $wp_customize Object that holds the customizer data.
*/
function pf_banner_customizer( $wp_customize ){
/*
* Failsafe is safe
*/
if ( ! isset( $wp_customize ) ) {
return;
}
/**
* Add '#banner' Section.
*/
$wp_customize->add_section(
// $id
'pf_section_banner',
// $args
array(
'title' => __( '#banner', 'theme-slug' ),
'active_callback' => 'is_front_page',
'priority' => 1,
)
);
/**
* Add 'Backgrounds Background Image' Setting.
*/
$wp_customize->add_setting(
// $id
'pf_banner_background_image',
// $args
array(
'default' => get_stylesheet_directory_uri() . '/images/welcome-background.jpg',
'sanitize_callback' => 'esc_url_raw',
'transport' => 'postMessage'
)
);
/**
* Add 'Backgrounds Background Image' image upload Control.
*/
$wp_customize->add_control(
new WP_Customize_Image_Control(
// $wp_customize object
$wp_customize,
// $id
'pf_banner_background_image',
// $args
array(
'settings' => 'pf_banner_background_image',
'section' => 'pf_section_banner',
'label' => __( 'Backgrounds Background Image', 'theme-slug' ),
)
)
);
$wp_customize->add_setting(
// $id
'pf_banner_scaling',
// $args
array(
'default' => 'Auto',
'sanitize_callback' => 'esc_url_raw',
'transport' => 'postMessage'
)
);
$wp_customize->add_control(
new WP_Customize_Control(
// $wp_customize object
$wp_customize,
// $id
'pf_banner_scaling',
// $args
array(
'label' => __('Banner Scaling Options', 'theme-slug'),
'description' => __('Options for Scaling the background image'),
'settings' => 'pf_banner_scaling',
'priority' => 10,
'section' => 'pf_section_banner',
'type' => 'select',
'choices' => array(
'auto' => 'Auto',
'cover' => 'Cover',
'contain' => 'Contain',
'custom' => 'Custom',
)
)
)
);
}
// Settings API options initilization and validation.
add_action( 'customize_register', 'pf_banner_customizer' );
/**
* Writes the Backgrounds background image out to the 'head' element of the document
* by reading the value from the theme mod value in the options table.
*/
function pf_change_background_img() {
?>
<style type="text/css">
<?php
if ( get_theme_mod( 'pf_banner_background_image' ) ) {
$banner_background_image_url = get_theme_mod( 'pf_banner_background_image' );
} else {
$banner_background_image_url = get_stylesheet_directory_uri() . '/images/welcome-background.jpg';
}
section#banner {
background-image: url( <?php echo $banner_background_image_url; ?> );
}
<?php // } // end if ?>
</style>
<?php
} // end pf_customizer_css
add_action( 'wp_head', 'pf_change_background_img');
function pf_change_background_size() {
?>
<style type="text/css">
<?php
$bg_size = get_theme_mod( 'pf_banner_scaling' );
?>
section#banner {
background-size: <?php echo $bg_size; ?>;
background-color: '#00ffff'
}
?>
</style>;
<?php
}
add_action( 'wp_head', 'pf_change_background_size');
/**
* Registers the Theme Customizer Preview with WordPress.
*
* @package sk
* @since 0.3.0
* @version 0.3.0
*/
function pf_customizer_live_preview() {
wp_enqueue_script(
'pf-theme-customizer',
get_stylesheet_directory_uri() . '/js/theme-customizer.js',
array( 'customize-preview' ),
'0.1.0',
true
);
} // end pf_customizer_live_preview
add_action( 'customize_preview_init', 'pf_customizer_live_preview' );
JS /主题customizer.js:
(function( $ ) {
"use strict";
// Image Control for section#banner
wp.customize( 'pf_banner_background_image', function( value ) {
value.bind( function( to ) {
$( '#banner' ).css( 'background-image', 'url( ' + to + ')' );
} );
});
})( jQuery );
(function( $ ) {
"use strict";
// Image Scaling Option for section#banner
wp.customize( 'pf_banner_scaling', function( value ) {
value.bind( function( to ) {
$( '#banner' ).css( 'background-size', to);
} );
});
})( jQuery );
对不起代码墙。
这是一个相关的问题:
刷新后,下拉控件为空。我希望它能显示当前值或默认值,两者都是'auto'。
任何指针都非常感谢!
好的,自己找到了:我从示例中复制粘贴控件并复制了清理程序回调。显然,与selectbox一起使用时,esc_url_raw没有意义。当我现在使用sanitize_text_field时,它会被正确保存,并且重新加载后选择器中的值也是正确的。