我编写了一个插件来创建一个名为gardener, 并添加了一个名为region, 除了一个包含多个字段的元框_gardener_address. The last is where the problem lies.
你看，我使用了https://gist.github.com/cferdinandi/46aca88d6d142791a32a9d30017f1cd8 为了创建我的元框，虽然在管理方面一切都很好，但当我尝试在帖子上实际显示元数据时，我遇到了一个大问题。
创建自定义帖子类型、分类法和元框的代码如下：
if ( ! function_exists(\'gardeners_post_type\') ) {
if ( ! function_exists( \'region_taxonomy\' ) ) {
// Register Custom Taxonomy
function region_taxonomy() {
$labels = array(
\'name\' => _x( \'Regio\\\'s\', \'Taxonomy General Name\', \'text_domain\' ),
\'singular_name\' => _x( \'Regio\', \'Taxonomy Singular Name\', \'text_domain\' ),
\'menu_name\' => __( \'Regio\\\'s\', \'text_domain\' ),
\'all_items\' => __( \'Alle Regio\\\'s\', \'text_domain\' ),
\'parent_item\' => __( \'Provincie\', \'text_domain\' ),
\'parent_item_colon\' => __( \'Provincie:\', \'text_domain\' ),
\'new_item_name\' => __( \'Nieuwe regio\', \'text_domain\' ),
\'add_new_item\' => __( \'Nieuwe regio\', \'text_domain\' ),
\'edit_item\' => __( \'Wijzig regio\', \'text_domain\' ),
\'update_item\' => __( \'Update regio\', \'text_domain\' ),
\'view_item\' => __( \'Bekijk regio\', \'text_domain\' ),
\'separate_items_with_commas\' => __( \'Afzonderlijke regio\\\'s scheiden met komma\\\'s\', \'text_domain\' ),
\'add_or_remove_items\' => __( \'Toevoegen of verwijderen regio\\\'s\', \'text_domain\' ),
\'choose_from_most_used\' => __( \'Kies uit de meest gebruikte regio\\\'s\', \'text_domain\' ),
\'popular_items\' => __( \'Populaire regio\\\'s\', \'text_domain\' ),
\'search_items\' => __( \'Zoek regio\', \'text_domain\' ),
\'not_found\' => __( \'Regio niet gevonden\', \'text_domain\' ),
\'no_terms\' => __( \'Geen regio beschikbaar\', \'text_domain\' ),
\'items_list\' => __( \'Regio-overzicht\', \'text_domain\' ),
\'items_list_navigation\' => __( \'Regio-overzicht navigatie\', \'text_domain\' ),
);
$args = array(
\'labels\' => $labels,
\'hierarchical\' => false,
\'public\' => true,
\'show_ui\' => true,
\'show_admin_column\' => true,
\'show_in_nav_menus\' => true,
\'show_tagcloud\' => true,
\'show_in_rest\' => true,
);
register_taxonomy( \'region\', array( \'gardener\' ), $args );
}
add_action( \'init\', \'region_taxonomy\', 0 );
}
// Register Custom Post Type
function gardeners_post_type() {
$labels = array(
\'name\' => _x( \'Hoveniers\', \'Post Type General Name\', \'text_domain\' ),
\'singular_name\' => _x( \'Hovenier\', \'Post Type Singular Name\', \'text_domain\' ),
\'menu_name\' => __( \'Hoveniers\', \'text_domain\' ),
\'name_admin_bar\' => __( \'Hovenier\', \'text_domain\' ),
\'archives\' => __( \'Hovenieroverzicht\', \'text_domain\' ),
\'attributes\' => __( \'Hovenier eigenschappen\', \'text_domain\' ),
\'parent_item_colon\' => __( \'Hoofdhovenier:\', \'text_domain\' ),
\'all_items\' => __( \'Alle hoveniers\', \'text_domain\' ),
\'add_new_item\' => __( \'Nieuwe hovenier\', \'text_domain\' ),
\'add_new\' => __( \'Nieuwe hovenier\', \'text_domain\' ),
\'new_item\' => __( \'Nieuwe hovenier\', \'text_domain\' ),
\'edit_item\' => __( \'Wijzig hovenier\', \'text_domain\' ),
\'update_item\' => __( \'Update hovenier\', \'text_domain\' ),
\'view_item\' => __( \'Bekijk hovenier\', \'text_domain\' ),
\'view_items\' => __( \'Bekijk hoveniers\', \'text_domain\' ),
\'search_items\' => __( \'Zoek hovenier\', \'text_domain\' ),
\'not_found\' => __( \'Hovenier niet gevonden\', \'text_domain\' ),
\'not_found_in_trash\' => __( \'Hovenier niet gevonden in Prullenbak\', \'text_domain\' ),
\'featured_image\' => __( \'Uitgelichte afbeelding\', \'text_domain\' ),
\'set_featured_image\' => __( \'Stel uitgelichte afbeelding in\', \'text_domain\' ),
\'remove_featured_image\' => __( \'Verwijder uitgelichte afbeelding\', \'text_domain\' ),
\'use_featured_image\' => __( \'Gebruik als uitgelichte afbeelding\', \'text_domain\' ),
\'insert_into_item\' => __( \'Invoegen bij hovenier\', \'text_domain\' ),
\'uploaded_to_this_item\' => __( \'Geüploadet naar deze hovenier\', \'text_domain\' ),
\'items_list\' => __( \'Hovenieroverzicht\', \'text_domain\' ),
\'items_list_navigation\' => __( \'Hovenieroverzichtsmenu\', \'text_domain\' ),
\'filter_items_list\' => __( \'Filter hoveniers\', \'text_domain\' ),
);
$rewrite = array(
\'slug\' => \'hovenier\',
\'with_front\' => true,
\'pages\' => true,
\'feeds\' => false,
);
$args = array(
\'label\' => __( \'Hovenier\', \'text_domain\' ),
\'description\' => __( \'Overzicht van hoveniers\', \'text_domain\' ),
\'labels\' => $labels,
\'supports\' => array( \'title\', \'editor\', \'thumbnail\', \'revisions\' ),
\'taxonomies\' => array( \'region\' ),
\'hierarchical\' => false,
\'public\' => true,
\'show_ui\' => true,
\'show_in_menu\' => true,
\'menu_position\' => 70,
\'menu_icon\' => \'dashicons-groups\',
\'show_in_admin_bar\' => true,
\'show_in_nav_menus\' => true,
\'can_export\' => true,
\'has_archive\' => true,
\'exclude_from_search\' => false,
\'publicly_queryable\' => true,
\'rewrite\' => $rewrite,
\'capability_type\' => \'page\',
\'show_in_rest\' => true,
);
register_post_type( \'gardener\', $args );
}
add_action( \'init\', \'gardeners_post_type\', 0 );
// CUSTOM META BOX ---------------------------------------------
//
// Create Metabox
//
/**
* Create the metabox
* @link https://developer.wordpress.org/reference/functions/add_meta_box/
https://gist.github.com/cferdinandi/46aca88d6d142791a32a9d30017f1cd8
*/
function _gardener_address_create_metabox() {
// Can only be used on a single post type (ie. page or post or a custom post type).
// Must be repeated for each post type you want the metabox to appear on.
add_meta_box(
\'_gardener_address_metabox\', // Metabox ID
\'Contactinformatie\', // Title to display
\'_gardener_address_render_metabox\', // Function to call that contains the metabox content
\'gardener\', // Post type to display metabox on
\'normal\', // Where to put it (normal = main colum, side = sidebar, etc.)
\'high\' // Priority relative to other metaboxes
);
}
add_action( \'add_meta_boxes\', \'_gardener_address_create_metabox\' );
/**
* Create the metabox default values
* This allows us to save multiple values in an array, reducing the size of our database.
* Setting defaults helps avoid "array key doesn\'t exit" issues.
* @todo
*/
function _gardener_address_metabox_defaults() {
return array(
\'street\' => \'\',
\'zip\' => \'\',
\'city\' => \'\',
\'tel1\' => \'\',
\'tel2\' => \'\',
\'email\' => \'\',
\'url\' => \'\',
\'fb\' => \'\',
\'twitter\' => \'\',
\'linkedin\' => \'\',
\'insta\' => \'\',
\'pint\' => \'\',
);
}
/**
* Render the metabox markup
* This is the function called in `_gardener_address_create_metabox()`
*/
function _gardener_address_render_metabox() {
// Variables
global $post; // Get the current post data
$saved = get_post_meta( $post->ID, \'_gardener_address\', true ); // Get the saved values
$defaults = _gardener_address_metabox_defaults(); // Get the default values
$details = wp_parse_args( $saved, $defaults ); // Merge the two in case any fields don\'t exist in the saved data
?>
<style>
#_gardener_address_metabox .inside {
display:flex;
align-items:flex-start;
justify-content: space-between;
}
.gardener_address_fieldset div {
display:flex;
align-items: center;
justify-content: space-between;
width:100%;
}
.gardener_address_fieldset legend {
font-weight:600;
margin-bottom:1rem;
}
.gardener_address_fieldset label {
margin-right:1rem;
}
.gardener_address_fieldset input {
}
</style>
<fieldset class="gardener_address_fieldset">
<legend>Adresgegevens</legend>
<div>
<label for="_gardener_address_custom_metabox_street">
<?php
// This runs the text through a translation and echoes it (for internationalization)
_e( \'Straat\', \'_gardener_address\' );
?>
</label>
<?php
// It\'s important that the `name` is an array. This let\'s us
// easily loop through all fields later when we go to save
// our submitted data.
//
// The `esc_attr()` function here escapes the data for
// HTML attribute use to avoid unexpected issues
?>
<input type="text" name="_gardener_address_custom_metabox[street]" id="_gardener_address_custom_metabox_street" value="<?php echo esc_attr( $details[\'street\'] ); ?>">
</div>
<div>
<label for="_gardener_address_custom_metabox_zip">
<?php
_e( \'Postcode\', \'_gardener_address\' );
?>
</label>
<input type="text" name="_gardener_address_custom_metabox[zip]" id="_gardener_address_custom_metabox_zip" value="<?php echo esc_attr( $details[\'zip\'] ); ?>">
</div>
<div>
<label for="_gardener_address_custom_metabox_city">
<?php
_e( \'Plaats\', \'_gardener_address\' );
?>
</label>
<input type="text" name="_gardener_address_custom_metabox[city]" id="_gardener_address_custom_metabox_city" value="<?php echo esc_attr( $details[\'city\'] ); ?>">
</div>
</fieldset>
<fieldset class="gardener_address_fieldset">
<legend>Telefoonnummers</legend>
<div>
<label for="_gardener_address_custom_metabox_tel1">
<?php _e( \'Telefoon\', \'_gardener_address\' ); ?>
</label>
<input type="tel" name="_gardener_address_custom_metabox[tel1]" id="_gardener_address_custom_metabox_tel1" value="<?php echo esc_attr( $details[\'tel1\'] ); ?>">
</div>
<div>
<label for="_gardener_address_custom_metabox_tel2">
<?php _e( \'Telefoon\', \'_gardener_address\' ); ?>
</label>
<input type="tel" name="_gardener_address_custom_metabox[tel2]" id="_gardener_address_custom_metabox_tel2" value="<?php echo esc_attr( $details[\'tel2\'] ); ?>">
</div>
</fieldset>
<fieldset class="gardener_address_fieldset">
<legend>Web</legend>
<div>
<label for="_gardener_address_custom_metabox_email">
<?php _e( \'E-mail\', \'_gardener_address\' ); ?>
</label>
<input type="email" name="_gardener_address_custom_metabox[email]" id="_gardener_address_custom_metabox_email" value="<?php echo esc_attr( $details[\'email\'] ); ?>">
</div>
<div>
<label for="_gardener_address_custom_metabox_url">
<?php _e( \'Website\', \'_gardener_address\' ); ?>
</label>
<input type="url" name="_gardener_address_custom_metabox[url]" id="_gardener_address_custom_metabox_url" value="<?php echo esc_attr( $details[\'url\'] ); ?>">
</div>
</fieldset>
<fieldset class="gardener_address_fieldset">
<legend>Sociale media</legend>
<div>
<label for="_gardener_address_custom_metabox_fb">
<?php _e( \'Facebook\', \'_gardener_address\' ); ?>
</label>
<input type="url" name="_gardener_address_custom_metabox[fb]" id="_gardener_address_custom_metabox_fb" value="<?php echo esc_attr( $details[\'fb\'] ); ?>">
</div>
<div>
<label for="_gardener_address_custom_metabox_twitter">
<?php _e( \'Twitter\', \'_gardener_address\' ); ?>
</label>
<input type="url" name="_gardener_address_custom_metabox[twitter]" id="_gardener_address_custom_metabox_twitter" value="<?php echo esc_attr( $details[\'twitter\'] ); ?>">
</div>
<div>
<label for="_gardener_address_custom_metabox_linkedin">
<?php _e( \'LinkedIn\', \'_gardener_address\' ); ?>
</label>
<input type="url" name="_gardener_address_custom_metabox[linkedin]" id="_gardener_address_custom_metabox_linkedin" value="<?php echo esc_attr( $details[\'linkedin\'] ); ?>">
</div>
<div>
<label for="_gardener_address_custom_metabox_insta">
<?php _e( \'Instagram\', \'_gardener_address\' ); ?>
</label>
<input type="url" name="_gardener_address_custom_metabox[insta]" id="_gardener_address_custom_metabox_insta" value="<?php echo esc_attr( $details[\'insta\'] ); ?>">
</div>
<div>
<label for="_gardener_address_custom_metabox_pint">
<?php _e( \'Pinterest\', \'_gardener_address\' ); ?>
</label>
<input type="url" name="_gardener_address_custom_metabox[pint]" id="_gardener_address_custom_metabox_pint" value="<?php echo esc_attr( $details[\'pint\'] ); ?>">
</div>
</fieldset>
<?php
// Security field
// This validates that submission came from the
// actual dashboard and not the front end or
// a remote server.
wp_nonce_field( \'_gardener_address_form_metabox_nonce\', \'_gardener_address_form_metabox_process\' );
}
//
// Save our data
//
/**
* Save the metabox
* @param Number $post_id The post ID
* @param Array $post The post data
*/
function _gardener_address_save_metabox( $post_id, $post ) {
// Verify that our security field exists. If not, bail.
if ( !isset( $_POST[\'_gardener_address_form_metabox_process\'] ) ) return;
// Verify data came from edit/dashboard screen
if ( !wp_verify_nonce( $_POST[\'_gardener_address_form_metabox_process\'], \'_gardener_address_form_metabox_nonce\' ) ) {
return $post->ID;
}
// Verify user has permission to edit post
if ( !current_user_can( \'edit_post\', $post->ID )) {
return $post->ID;
}
// Check that our custom fields are being passed along
// This is the `name` value array. We can grab all
// of the fields and their values at once.
if ( !isset( $_POST[\'_gardener_address_custom_metabox\'] ) ) {
return $post->ID;
}
/**
* Sanitize all data
* This keeps malicious code out of our database.
*/
// Set up an empty array
$sanitized = array();
// Loop through each of our fields
foreach ( $_POST[\'_gardener_address_custom_metabox\'] as $key => $detail ) {
// Sanitize the data and push it to our new array
// `wp_filter_post_kses` strips our dangerous server values
// and allows through anything you can include a post.
$sanitized[$key] = wp_filter_post_kses( $detail );
}
// Save our submissions to the database
update_post_meta( $post->ID, \'_gardener_address\', $sanitized );
}
add_action( \'save_post\', \'_gardener_address_save_metabox\', 1, 2 );
//
// Save a copy to our revision history
// This is optional, and potentially undesireable for certain data types.
// Restoring a a post to an old version will also update the metabox.
/**
* Save events data to revisions
* @param Number $post_id The post ID
*/
function _gardener_address_save_revisions( $post_id ) {
// Check if it\'s a revision
$parent_id = wp_is_post_revision( $post_id );
// If is revision
if ( $parent_id ) {
// Get the saved data
$parent = get_post( $parent_id );
$details = get_post_meta( $parent->ID, \'_gardener_address\', true );
// If data exists and is an array, add to revision
if ( !empty( $details ) && is_array( $details ) ) {
// Get the defaults
$defaults = _gardener_address_metabox_defaults();
// For each default item
foreach ( $defaults as $key => $value ) {
// If there\'s a saved value for the field, save it to the version history
if ( array_key_exists( $key, $details ) ) {
add_metadata( \'post\', $post_id, \'_gardener_address_\' . $key, $details[$key] );
}
}
}
}
}
add_action( \'save_post\', \'_gardener_address_save_revisions\' );
/**
* Restore events data with post revisions
* @param Number $post_id The post ID
* @param Number $revision_id The revision ID
*/
function _gardener_address_restore_revisions( $post_id, $revision_id ) {
// Variables
$post = get_post( $post_id ); // The post
$revision = get_post( $revision_id ); // The revision
$defaults = _gardener_address_metabox_defaults(); // The default values
$details = array(); // An empty array for our new metadata values
// Update content
// For each field
foreach ( $defaults as $key => $value ) {
// Get the revision history version
$detail_revision = get_metadata( \'post\', $revision->ID, \'_gardener_address_\' . $key, true );
// If a historic version exists, add it to our new data
if ( isset( $detail_revision ) ) {
$details[$key] = $detail_revision;
}
}
// Replace our saved data with the old version
update_post_meta( $post_id, \'_gardener_address\', $details );
}
add_action( \'wp_restore_post_revision\', \'_gardener_address_restore_revisions\', 10, 2 );
/**
* Get the data to display on the revisions page
* @param Array $fields The fields
* @return Array The fields
*/
function _gardener_address_get_revisions_fields( $fields ) {
// Get our default values
$defaults = _gardener_address_metabox_defaults();
// For each field, use the key as the title
foreach ( $defaults as $key => $value ) {
$fields[\'_gardener_address_\' . $key] = ucfirst( $key );
}
return $fields;
}
add_filter( \'_wp_post_revision_fields\', \'_gardener_address_get_revisions_fields\' );
/**
* Display the data on the revisions page
* @param String|Array $value The field value
* @param Array $field The field
*/
function _gardener_address_display_revisions_fields( $value, $field ) {
global $revision;
return get_metadata( \'post\', $revision->ID, $field, true );
}
add_filter( \'_wp_post_revision_field_my_meta\', \'_gardener_address_display_revisions_fields\', 10, 2 );
}
我试图在
single-gardener.php 通过使用
<ul>
<?php
$custom_fields = get_post_custom( get_the_ID() );
$my_custom_field = $custom_fields[\'_gardener_address\'];
foreach ( $my_custom_field as $key => $value ) {
echo "<li>" . $key . " => " . $value . "</li>";
}
?>
</ul>
然而，我得到的只是一根长字符串
0=>a:12：{s:6：“街道”；s:8：“街道1”；s:3：“邮编”；s:7：“1234 AB”；s:4：“城市”；s:4：“tel1”；s:0:；s:4：“tel2”；s:0:；s:5：“电子邮件”；s:0:；s:3：“url”；s:16：http://test.com/“s:2：“fb”；s:0:；s:7：“twitter”；s:0:；s:8：“linkedin”；s:0:；s:5：“insta”；s:0:；s:4：“品脱”；s:0:；”
我基本上是一个PHP初学者，老实说，我不知道为什么我的数据会作为一个长字符串进行响应，而不是将每个值单独列出。。。有谁能指引我正确的方向吗？
