jrobinsonc
9/23/2016 - 12:11 AM
WordPress custom post type helper
WordPress custom post type helper
<?php
/**
* @see https://gist.github.com/jrobinsonc/d5aba3a6066ff2e54e24ced341eaa3aa
*/
class WP_CPT {
public function __construct()
{
add_action( 'init', [$this, 'action_init']);
add_action( "add_meta_boxes_{$this->slug}", [$this, 'action_add_meta_boxes']);
add_action( 'save_post', [$this, 'action_save_post'], 10, 2);
}
public function get_field( $metabox_name, $field_name, $content = '' )
{
$field = new stdClass();
$field->label = $this->custom_fields[ $metabox_name ][ 'fields' ][ $field_name ];
$field->name = "{$this->slug}_{$metabox_name}_{$field_name}";
$field->slug = "{$metabox_name}/{$field_name}";
$field->content = $content;
return $field;
}
public function action_add_meta_boxes($post)
{
foreach ($this->custom_fields as $metabox_name => $metabox_info)
{
add_meta_box(
"{$this->slug}-{$metabox_name}",
$metabox_info['title'],
function() use ($metabox_name, $metabox_info, $post) {
foreach ($metabox_info['fields'] as $field_name => $field_label) {
$field = $this->get_field( $metabox_name, $field_name );
$field->content = get_post_metax( $field->name, $post->ID );
echo '<p>';
printf('<label for="%s">%s</label><br>', $field->name, $field->label);
$input_html = $this->custom_field_html( $field );
if ( null === $input_html )
printf('<input type="text" name="%1$s" id="%1$s" value="%2$s">', $field->name, $field->content );
else
echo $input_html;
echo '<p>';
}
},
$this->slug,
'normal',
'default'
);
}
}
public function action_save_post($post_id, $post)
{
if ( $post->post_type !== $this->slug )
return;
foreach ($this->custom_fields as $metabox_name => $metabox_info)
{
foreach ($metabox_info['fields'] as $field_name => $field_label) {
$field = $this->get_field( $metabox_name, $field_name );
update_post_meta( $post_id, $field->name, $_POST[$field->name] );
}
}
}
}
//class Custom_post_type_field {
// public $name;
// public $content;
// public $slug;
//
// public function __construct($name, )
// {
//
// }
//}
WordPress custom post type helper
Usage
<?php
require_once 'WP_CPT.php';
class Portfolio_post_type extends WP_CPT {
public $slug = 'portfolio';
public $custom_fields = [
'details' => [
'title' => 'Project details',
'fields' => [
'name' => 'Project name',
'description' => 'Project description'
]
]
];
function custom_field_html($field)
{
// Adding custom inputs for some fields.
switch ($field->slug)
{
case 'details/description':
$input = sprintf('<textarea name="%s">%s</textarea>', $field->name, $field->content);
break;
}
return $input;
}
public function action_init()
{
register_post_type( $this->slug, [
'labels' => array(
'name' => __( 'Portfolio' ),
'singular_name' => __( 'Portfolio' )
),
'public' => true,
'supports' => ['title'],
'rewrite' => [
'with_front' => false
]
] );
}
}
new Portfolio_post_type;