未保存Wordpress自定义选项

Question

我在为wordpress添加自定义设置页面时遇到了问题，并且更具体地获取了要保存的选项。

此文档似乎缺乏和不一致，因为不同的示例和不同的功能以不同的方式解释相同的事情。

wordpress codex上的最新示例使用sanitize回调函数来保存选项。但add_settings_field（）文档说，保存选项应该在幕后进行。似乎更奇怪的是使用san回调保存反正。

我已经尝试了各种不同的方法，并在一次我的代码设法保存一个领域，但不是所有的领域。

我当前的代码：

class wwtkSettings { 
public function __construct() { 
    if (is_admin()){ 
     add_action('admin_menu', array($this, 'add_plugin_page')); 
     add_action('admin_init', array($this, 'page_init')); 
    } 
} 

public function add_plugin_page(){ 
    add_options_page('WWTK Settings', 'WWTK settings', 'manage_options', 'wwtk-settings', array($this, 'create_admin_page')); 
} 

public function create_admin_page() { 
    ?> 
    <div class="wrap"> 
     <?php screen_icon(); ?> 
     <h2>WWTK Settings</h2> 
     <form method="post" action="options.php"> 
      <?php 
      settings_fields('wwtk-setting-group'); 
      do_settings_sections('wwtk-settings'); 
      ?> 
      <?php submit_button(); ?> 
     </form> 
    </div> 
    <?php 
} 

public function page_init() { 
    register_setting('wwtk-setting-group', 'wwtk-setting-group', array($this, 'wwtk_validate_options')); 

    add_settings_section(
     'wwtk-settings-section', 
     'Categories and pages', 
     array($this, 'print_section_info'), 
     'wwtk-settings' 
     ); 

    add_settings_field(
     'frontpage', 
     'Frontpage category:', 
     array($this, 'create_category_field'), 
     'wwtk-settings', 
     'wwtk-settings-section', 
     'frontpage' 
     ); 
    add_settings_field(
     'category1', 
     'Category & page 1', 
     array($this, 'create_category_field'), 
     'wwtk-settings', 
     'wwtk-settings-section', 
     'category1' 
     ); 
    add_settings_field(
     'category2', 
     'Category & page 2', 
     array($this, 'create_category_field'), 
     'wwtk-settings', 
     'wwtk-settings-section', 
     'category2' 
     ); 
    add_settings_field(
     'category3', 
     'Category & page 3', 
     array($this, 'create_category_field'), 
     'wwtk-settings', 
     'wwtk-settings-section', 
     'category3' 
     ); 
} 

//TODO: check if category and page exist. and sanitize! 
public function wwtk_validate_options($input) { 
    return $input; 
} 

public function print_section_info(){ 
    print 'Enter the names of categories that should be displayed on the page with the same name(both must exist):'; 
} 

public function create_category_field($args){ 
    ?><input type="text" id="<?php echo $args ?>" name="wwtk-setting-group" value="<?php echo get_option('wwtk-setting-group['.$args.']'); ?>" /><?php 
} 

}

Answer 1

/* code similar to your example */ 

class MySettingsPage{ 
/** 
* Holds the values to be used in the fields callbacks 
*/ 
private $options; 

/** 
* Start up 
*/ 
public function __construct() 
{ 
    add_action('admin_menu', array($this, 'add_plugin_page')); 
    add_action('admin_init', array($this, 'page_init')); 
} 

/** 
* Add options page 
*/ 
public function add_plugin_page() 
{ 
    // This page will be under "Settings" 
    add_options_page(
     'Settings Admin', 
     'My Settings', 
     'manage_options', 
     'my-setting-admin', 
     array($this, 'create_admin_page') 
    ); 
} 

/** 
* Options page callback 
*/ 
public function create_admin_page() 
{ 
    // Set class property 
    $this->options = get_option('my_option_name'); 
    ?> 
    <div class="wrap"> 
     <?php screen_icon(); ?> 
     <h2>My Settings</h2>   
     <form method="post" action="options.php"> 
     <?php 
      // This prints out all hidden setting fields 
      settings_fields('my_option_group'); 
      do_settings_sections('my-setting-admin'); 
      submit_button(); 
     ?> 
     </form> 
    </div> 
    <?php 
} 

/** 
* Register and add settings 
*/ 
public function page_init() 
{   
    register_setting(
     'my_option_group', // Option group 
     'my_option_name', // Option name 
     array($this, 'sanitize') // Sanitize 
    ); 

    add_settings_section(
     'setting_section_id', // ID 
     'My Custom Settings', // Title 
     array($this, 'print_section_info'), // Callback 
     'my-setting-admin' // Page 
    ); 

    add_settings_field(
     'id_number', // ID 
     'ID Number', // Title 
     array($this, 'id_number_callback'), // Callback 
     'my-setting-admin', // Page 
     'setting_section_id' // Section   
    );  

    add_settings_field(
     'title', 
     'Title', 
     array($this, 'title_callback'), 
     'my-setting-admin', 
     'setting_section_id' 
    );  
} 

/** 
* Sanitize each setting field as needed 
* 
* @param array $input Contains all settings fields as array keys 
*/ 
public function sanitize($input) 
{ 
    if(!is_numeric($input['id_number'])) 
     $input['id_number'] = ''; 

    if(!empty($input['title'])) 
     $input['title'] = sanitize_text_field($input['title']); 

    return $input; 
} 

/** 
* Print the Section text 
*/ 
public function print_section_info() 
{ 
    print 'Enter your settings below:'; 
} 

/** 
* Get the settings option array and print one of its values 
*/ 
public function id_number_callback() 
{ 
    printf(
     '<input type="text" id="id_number" name="my_option_name[id_number]" value="%s" />', 
     esc_attr($this->options['id_number']) 
    ); 
} 

/** 
* Get the settings option array and print one of its values 
*/ 
public function title_callback() 
{ 
    printf(
     '<input type="text" id="title" name="my_option_name[title]" value="%s" />', 
     esc_attr($this->options['title']) 
    ); 
} 
} 

if(is_admin()) 
    $my_settings_page = new MySettingsPage();