我正在尝试使用add_options_page为插件创建管理员设置页面。选项页面工作正常,但在设置插件激活的默认值时遇到问题。
我尝试在输入字段中将默认值设置为value =“”:
public function title_0_callback() {
printf(
'<input class="regular-text" type="text" name="ie_blocker_option_name[title_0]" id="title_0" value="The site you are trying to connect to does not support Internet Explorer.">',
isset( $this->ie_blocker_options['title_0'] ) ? esc_attr( $this->ie_blocker_options['title_0']) : ''
);
}
这有点用,有一个默认值,但是用户必须按“保存设置”才能使该值生效。
我也尝试过register_activation_hook,它应该检查字段是否为空,然后检查是否为空。这似乎无能为力。不太确定我缺少什么:
// Activation
function name_plugin_activation(){
do_action( 'name_plugin_default_options' );
}
register_activation_hook( __FILE__, 'name_plugin_activation' );
// Set default values here
function name_plugin_default_values(){
$ie_blocker_options = get_option( 'ie_blocker_option_name' ); // Array of All Options
$title_0 = $ie_blocker_options['title_0']; // Title
$content_1 = $ie_blocker_options['content_1']; // Content
$new_value = 'The site you are trying to connect to does not support Internet Explorer.';
if ( get_option( $title_0 ) !== false ) {
// The option already exists, so update it.
update_option( $title_0, $new_value );
}
}
add_action( 'name_plugin_default_options', 'name_plugin_default_values' );
在我用于创建选项页/管理员设置页的完整代码下面:
class IEBlocker {
private $ie_blocker_options;
public function __construct() {
add_action( 'admin_menu', array( $this, 'ie_blocker_add_plugin_page' ) );
add_action( 'admin_init', array( $this, 'ie_blocker_page_init' ) );
}
public function ie_blocker_add_plugin_page() {
add_options_page(
'IE Blocker', // page_title
'IE Blocker', // menu_title
'manage_options', // capability
'ie-blocker', // menu_slug
array( $this, 'ie_blocker_create_admin_page' ) // function
);
}
public function ie_blocker_create_admin_page() {
$this->ie_blocker_options = get_option( 'ie_blocker_option_name' ); ?>
<div class="wrap">
<h2>IE Blocker</h2>
<p>Just a little intro text.</p>
<?php settings_errors(); ?>
<form method="post" action="options.php">
<?php
settings_fields( 'ie_blocker_option_group' );
do_settings_sections( 'ie-blocker-admin' );
submit_button();
?>
</form>
</div>
<?php }
public function ie_blocker_page_init() {
register_setting(
'ie_blocker_option_group', // option_group
'ie_blocker_option_name', // option_name
array( $this, 'ie_blocker_sanitize' ) // sanitize_callback
);
add_settings_section(
'ie_blocker_setting_section', // id
'Settings', // title
array( $this, 'ie_blocker_section_info' ), // callback
'ie-blocker-admin' // page
);
add_settings_field(
'title_0', // id
'Title', // title
array( $this, 'title_0_callback' ), // callback
'ie-blocker-admin', // page
'ie_blocker_setting_section' // section
);
add_settings_field(
'content_1', // id
'Content', // title
array( $this, 'content_1_callback' ), // callback
'ie-blocker-admin', // page
'ie_blocker_setting_section' // section
);
}
public function ie_blocker_sanitize($input) {
$sanitary_values = array();
if ( isset( $input['title_0'] ) ) {
$sanitary_values['title_0'] = sanitize_text_field( $input['title_0'] );
}
if ( isset( $input['content_1'] ) ) {
$sanitary_values['content_1'] = esc_textarea( $input['content_1'] );
}
return $sanitary_values;
}
public function ie_blocker_section_info() {
}
public function title_0_callback() {
printf(
'<input class="regular-text" type="text" name="ie_blocker_option_name[title_0]" id="title_0" value="The site you are trying to connect to does not support Internet Explorer.">',
isset( $this->ie_blocker_options['title_0'] ) ? esc_attr( $this->ie_blocker_options['title_0']) : ''
);
}
public function content_1_callback() {
printf(
'<textarea class="large-text" rows="5" name="ie_blocker_option_name[content_1]" id="content_1">To continue, please use a modern web browser such as:</textarea>',
isset( $this->ie_blocker_options['content_1'] ) ? esc_attr( $this->ie_blocker_options['content_1']) : ''
);
}
}
if ( is_admin() )
$ie_blocker = new IEBlocker();