<?php
class Custom_Post_Type {
public $post_type_name;
public $post_type_args;
public $post_type_labels;
/* Class constructor */
public function __construct( $name, $args = array(), $labels = array() )
{
// Set some important variables
$this->post_type_name = strtolower( str_replace( ' ', '_', $name ) );
$this->post_type_args = $args;
$this->post_type_labels = $labels;
// Add action to register the post type, if the post type doesnt exist
if( ! post_type_exists( $this->post_type_name ) )
{
add_action( 'init', array( &$this, 'register_post_type' ) );
}
// Listen for the save post hook
$this->save();
}
/* Method which registers the post type */
public function register_post_type()
{
//Capitilize the words and make it plural
$name = ucwords( str_replace( '_', ' ', $this->post_type_name ) );
$plural = $name . "´s";
// We set the default labels based on the post type name and plural. We overwrite them with the given labels.
$labels = array_merge(
// Default
array(
'name' => _x( $plural, 'post type general name' ),
'singular_name' => _x( $name, 'post type singular name' ),
'add_new' => _x( 'Erstellen', strtolower( $name ) ),
'add_new_item' => __( 'Erstellen ' . $name ),
'edit_item' => __( 'Bearbeite ' . $name ),
'new_item' => __( 'Neues ' . $name ),
'all_items' => __( '' . $plural ),
'view_item' => __( 'Anzeigen ' . $name ),
'search_items' => __( 'Suchen ' . $plural ),
'not_found' => __( 'Keine ' . $plural . ' gefunden'),
'not_found_in_trash' => __( 'Keine ' . $plural . ' im Papierkorb gefunden'),
'parent_item_colon' => '',
'menu_name' => $name
),
// Given labels
$this->post_type_labels
);
// Same principle as the labels. We set some default and overwite them with the given arguments.
$args = array_merge(
// Default
array(
'label' => $name,
'labels' => $labels,
'public' => true,
'show_ui' => true,
'supports' => array('title','editor', 'thumbnail', 'revisions', 'editor' ),
'show_in_nav_menus' => true,
'_builtin' => false,
),
// Given args
$this->post_type_args
);
// Register the post type
register_post_type( $this->post_type_name, $args );
}
/* Method to attach the taxonomy to the post type */
public function add_taxonomy( $name, $args = array(), $labels = array() )
{
if( ! empty( $name ) )
{
// We need to know the post type name, so the new taxonomy can be attached to it.
$post_type_name = $this->post_type_name;
// Taxonomy properties
$taxonomy_name = strtolower( str_replace( ' ', '_', $name ) );
$taxonomy_labels = $labels;
$taxonomy_args = $args;
if( ! taxonomy_exists( $taxonomy_name ) )
{
//Capitilize the words and make it plural
$name = ucwords( str_replace( '_', ' ', $name ) );
$plural = $name;
// Default labels, overwrite them with the given labels.
$labels = array_merge(
// Default
array(
'name' => _x( $plural, 'taxonomy general name' ),
'singular_name' => _x( $name, 'taxonomy singular name' ),
'search_items' => __( 'Suchen ' . $plural ),
'all_items' => __( 'All ' . $plural ),
'parent_item' => __( 'Eltern ' . $name ),
'parent_item_colon' => __( 'Eltern ' . $name . ':' ),
'edit_item' => __( 'Editieren ' . $name ),
'update_item' => __( 'Speichere ' . $name ),
'add_new_item' => __( 'Add New ' . $name ),
'new_item_name' => __( 'New ' . $name . ' Name' ),
'menu_name' => __( $name ),
),
// Given labels
$taxonomy_labels
);
// Default arguments, overwitten with the given arguments
$args = array_merge(
// Default
array(
'label' => $plural,
'labels' => $labels,
'public' => true,
'show_ui' => true,
'show_in_nav_menus' => true,
'_builtin' => false,
),
// Given
$taxonomy_args
);
// Add the taxonomy to the post type
add_action( 'init',
function() use( $taxonomy_name, $post_type_name, $args )
{
register_taxonomy( $taxonomy_name, $post_type_name, $args );
}
);
}
else
{
add_action( 'init',
function() use( $taxonomy_name, $post_type_name )
{
register_taxonomy_for_object_type( $taxonomy_name, $post_type_name );
}
);
}
}
}
/* Attaches meta boxes to the post type */
public function add_meta_box( $title, $fields = array(), $context = 'normal', $priority = 'default' )
{
if( ! empty( $title ) )
{
// We need to know the Post Type name again
$post_type_name = $this->post_type_name;
// Meta variables
$box_id = strtolower( str_replace( ' ', '_', $title ) );
$box_title = ucwords( str_replace( '_', ' ', $title ) );
$box_context = $context;
$box_priority = $priority;
// Make the fields global
global $custom_fields;
$custom_fields[$title] = $fields;
add_action( 'admin_init',
function() use( $box_id, $box_title, $post_type_name, $box_context, $box_priority, $fields )
{
add_meta_box(
$box_id,
$box_title,
function( $post, $data )
{
global $post;
// Nonce field for some validation
wp_nonce_field( plugin_basename( __FILE__ ), 'custom_post_type' );
// Get all inputs from $data
$custom_fields = $data['args'][0];
// Get the saved values
$meta = get_post_custom( $post->ID );
// Check the array and loop through it
if( ! empty( $custom_fields ) )
{
/* Loop through $custom_fields */
foreach( $custom_fields as $label => $type )
{
$field_id_name = strtolower( str_replace( ' ', '_', $data['id'] ) ) . '_' . strtolower( str_replace( ' ', '_', $label ) );
echo '<label for="' . $field_id_name . '">' . $label . '</label><input type="text" name="custom_meta[' . $field_id_name . ']" id="' . $field_id_name . '" value="' . $meta[$field_id_name][0] . '" />';
}
}
},
$post_type_name,
$box_context,
$box_priority,
array( $fields )
);
}
);
}
}
/* Listens for when the post type being saved */
public function save()
{
// Need the post type name again
$post_type_name = $this->post_type_name;
add_action( 'save_post',
function() use( $post_type_name )
{
// Deny the wordpress autosave function
if( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE ) return;
if ( ! wp_verify_nonce( $_POST['custom_post_type'], plugin_basename(__FILE__) ) ) return;
global $post;
if( isset( $_POST ) && isset( $post->ID ) && get_post_type( $post->ID ) == $post_type_name )
{
global $custom_fields;
// Loop through each meta box
foreach( $custom_fields as $title => $fields )
{
// Loop through all fields
foreach( $fields as $label => $type )
{
$field_id_name = strtolower( str_replace( ' ', '_', $title ) ) . '_' . strtolower( str_replace( ' ', '_', $label ) );
update_post_meta( $post->ID, $field_id_name, $_POST['custom_meta'][$field_id_name] );
}
}
}
}
);
}
}
?>
