我有一个元框，我编写了与woocommerce一起提供的产品发布类型。我遇到了一个问题，我无法通过＆＃39; save_post＆＃39;钩子似乎根本不适用于产品。它适用于帖子，但由于我已将我的代码更改为适用于产品，因此它无效。我挂钩的save_post功能目前绝对没有任何功能。我已经为它添加了各种代码并且它并不重要，脚本似乎没有达到那么远。我错过了一些明显的东西吗？
编辑：顺便说一下，我添加了
?> <script type="text/javascript">
var post_id = '<?php $post_id ?>';
console.log("id is: " + post_id );
</script><?php
但它绝对没有回报。
<?php
/*
* Represents the plugin's Meta Box
*
* @since 0.0.1
* @package BBPlugin
* @subpackage BBPlugin
* @author Christopher Dando <captaindando@gmail.com>
*/
/*
* Represents the plugin's Meta Box
*
* Register's the meta box with the WordPress API, sets its properties,
* by including the markup from its associated view
*
* @package BBPlugin
* @subpackage BBPlugin/admin
* @author Christopher Dando <captaindando@gmail.com>
*/
class BBPlugin_Meta_Box{
/*
* Register this class with the wordpress API
*
* @since 0.0.1
*/
public function initialize_hooks(){
//add_action( 'add_meta_boxes_product', array( $this, 'add_meta_box' ) );
add_action( 'add_meta_boxes', array( $this, 'BBadd_meta_box' ) );
// This checks when wordpress is saving or
// updating a post.
add_action( 'save_post', array( $this, 'save_post' ) );
$junk = $post_id;
?> <script type="text/javascript">
var post_id = '<?php global $post; echo $post->ID; ?>';
console.log("id is: " + post_id );
</script><?php
}
// add_meta_boxes is the wordpress function. add_meta_box is our new function
/*
* The function responsible for creating the actual meta box.
*
* @since 0.0.1
*/
public function BBadd_meta_box(){
?> <script>console.log("meta box added");</script><?php
add_meta_box(
'BBPlugin',
"Brave Books",
array( $this, 'display_meta_box' ),
'product',
'normal',
'default'
);
}
// This defines the properties of the meta box.
/*
* Renders the content of the meta box.
*
* @since 0.0.1
*/
public function display_meta_box(){
include_once( 'views/BBPlugin-navigation.php' );
}
/**
* Sanitizes and serializes the information associated with this post.
*
* @since 0.0.1
*
* @param int $post_id The ID of the post that's currently being edited.
*/
// strangely, this calls if the meta box does not render
public function save_post( $post_id ) {
?><script>alert("post saved");</script><?php
/* If we're not working with a 'product' post type or the
user doesn't have permission to save,
then we exit the function.
*/
if ( ! $this->user_can_save( $post_id, 'BBPlugin_nonce', 'BBPlugin_save' ) ) {
return;
}
/*
We need to 'Sanitise' our information before
we can save it to the database. What this means
is that we must strip it of html tags
and extract the text itself.
*/
// If the 'Resources' inputs exist, iterate through them and sanitize them
if ($this->value_exists( 'BBPlugin-resources' ) ) {
// This is all divs with the id of meta-box-resources
$this->update_post_meta(
$post_id,
'BBPlugin-resources',
$this->sanitize_data( 'BBPlugin-resources', true )
);
}
else {
// leaving an input blank on the front end will remove that specific input.
$this->delete_post_meta( $post_id, 'BBPlugin-resources' );
}
}
/**
* Determines whether or not a value exists in the $_POST collection
* identified by the specified key.
*
* @since 0.0.1
*
* @param string $key The key of the value in the $_POST collection.
* @return bool True if the value exists; otherwise, false.
*/
private function value_exists( $key ) {
return ! empty( $_POST[ $key ] );
}
/**
* Deletes the specified meta data associated with the specified post ID
* based on the incoming key.
*
* @since 0.0.1
* @access private
* @param int $post_id The ID of the post containing the meta data
* @param string $meta_key The ID of the meta data value
*/
private function delete_post_meta( $post_id, $meta_key ) {
if ( '' !== get_post_meta( $post_id, $meta_key, true ) ) {
delete_post_meta( $post_id, '$meta_key' );
}
}
private function update_post_meta( $post_id, $meta_key, $meta_value ) {
if ( is_array( $_POST[ $meta_key ] ) ) {
$meta_value = array_filter( $_POST[ $meta_key ] );
}
/*
Update_post_meta also adds to a database if there is nothing there already.
parameters are as follows:
1. The post ID used to associate this information with the post.
2. A meta key that's used to uniquely identify the value.
3. The actual value associated with the meta key.
*/
update_post_meta( $post_id, $meta_key, $meta_value );
}
/**
* Sanitizes the data in the $_POST collection identified by the specified key
* based on whether or not the data is text or is an array.
*
* @since 1.0.0
* @access private
* @param string $key The key used to retrieve the data from the $_POST collection.
* @param bool $is_array Optional. True if the incoming data is an array.
* @return array|string The sanitized data.
*/
private function sanitize_data( $key, $is_array = false ) {
$sanitized_data = null;
if ( $is_array ) {
$resources = $_POST[ $key ];
$sanitized_data = array();
foreach ( $resources as $resource ) {
$resource = esc_url( strip_tags( $resource ) );
if ( ! empty( $resource ) ) {
$sanitized_data[] = $resource;
}
}
}
else {
$sanitized_data = '';
$sanitized_data = trim( $_POST[ $key ] );
$sanitized_data = esc_textarea( strip_tags( $sanitized_data ) );
}
return $sanitized_data;
}
/**
* Verifies that the post type that's being saved is actually a post (versus a page or another
* custom post type.
*
*
* @since 0.0.1
* @access private
* @return bool Return if the current post type is a post; false, otherwise.
*/
private function is_valid_post_type() {
return ! empty( $_POST['post_type'] ) && 'post' == $_POST['post_type'];
}
/**
* Determines whether or not the current user has the ability to save meta data associated with this post.
*
* @since 0.0.1
* @access private
* @param int $post_id The ID of the post being save
* @param string $nonce_action The name of the action associated with the nonce.
* @param string $nonce_id The ID of the nonce field.
* @return bool Whether or not the user has the ability to save this post.
*/
private function user_can_save( $post_id, $nonce_action, $nonce_id ) {
$is_autosave = wp_is_post_autosave( $post_id );
$is_revision = wp_is_post_revision( $post_id );
$is_valid_nonce = ( isset( $_POST[ $nonce_action ] ) && wp_verify_nonce( $_POST[ $nonce_action ], $nonce_id ) );
// Return true if the user is able to save; otherwise, false.
return ! ( $is_autosave || $is_revision ) && $this->is_valid_post_type() && $is_valid_nonce;
}
}
?>
答案 0 :(得分：1)
在Wordpress中，save_post本身不是目的地;这是一个在页面之间有效执行的操作：您点击更新，Wordpress将在幕后执行一系列操作，然后返回相应的页面（总是您刚刚编辑的帖子） ，并提供有关该保存状态的通知。）
因此，您永远不会看到echo，print_r或JS alert或console.log的结果，因为save_post不是面向用户的行动。
如果你想看看你的save_post行动是否正在以这种方式进行，我会建议投入die()，如下：
public function save_post($post_id) {
?><script>alert("post saved");</script><?php
die();
}
如果正确触发了save_post操作，那么您应该在空白页面上看到JS警报。如果你想看看你的功能是否正在执行任何实际的Wordpress风格的功能，我建议一个简单的update_post_meta来确认：
public function save_post($post_id) {
// Insert some actual logic to ensure you're not doing this on every post all the time
update_post_meta($post_id, 'i_am_saved', 'totes saved to post #' . $post_id);
}
然后，您可以检查数据库（或单击以查看该帖子中的自定义字段）以查看是否已添加自定义元数据。
我还建议您将save_post操作专门附加到WooCommerce使用的product帖子类型：
add_action('save_post_product', array($this, 'save_post'));
这将在以后节省一些冗余检查。