l'ajout de modèle de page de plugin

Voici ma solution de code pour la page d'ajout de modèles à partir d'un plugin WordPress (inspiré par Tom McFarlin).

Il est conçu pour un plugin (les fichiers de modèle sont recherchés dans le répertoire racine du plugin). Ces fichiers sont exactement dans le même format, comme si elles devaient être inclus directement dans un thème. Ceci peut être modifié si vous le souhaitez - découvrez mon tutoriel complet http://www.wpexplorer.com/wordpress-page-templates-plugin/ pour plus de détails sur cette solution.

À personnaliser, il suffit de modifier le bloc de code suivant dans le __construct méthode;

   $this->templates = array(
       'goodtobebad-template.php'     => 'It\'s Good to Be Bad',
   );

Code complet;

class PageTemplater {
/**
* A Unique Identifier
*/
protected $plugin_slug;
/**
* A reference to an instance of this class.
*/
private static $instance;
/**
* The array of templates that this plugin tracks.
*/
protected $templates;
/**
* Returns an instance of this class. 
*/
public static function get_instance() {
if( null == self::$instance ) {
self::$instance = new PageTemplater();
} 
return self::$instance;
} 
/**
* Initializes the plugin by setting filters and administration functions.
*/
private function __construct() {
$this->templates = array();
//Add a filter to the attributes metabox to inject template into the cache.
add_filter(
'page_attributes_dropdown_pages_args',
array( $this, 'register_project_templates' ) 
);
//Add a filter to the save post to inject out template into the page cache
add_filter(
'wp_insert_post_data', 
array( $this, 'register_project_templates' ) 
);
//Add a filter to the template include to determine if the page has our 
//template assigned and return it's path
add_filter(
'template_include', 
array( $this, 'view_project_template') 
);
//Add your templates to this array.
$this->templates = array(
'goodtobebad-template.php'     => 'It\'s Good to Be Bad',
);
} 
/**
* Adds our template to the pages cache in order to trick WordPress
* into thinking the template file exists where it doens't really exist.
*
*/
public function register_project_templates( $atts ) {
//Create the key used for the themes cache
$cache_key = 'page_templates-' . md5( get_theme_root() . '/' . get_stylesheet() );
//Retrieve the cache list. 
//If it doesn't exist, or it's empty prepare an array
$templates = wp_get_theme()->get_page_templates();
if ( empty( $templates ) ) {
$templates = array();
} 
//New cache, therefore remove the old one
wp_cache_delete( $cache_key , 'themes');
//Now add our template to the list of templates by merging our templates
//with the existing templates array from the cache.
$templates = array_merge( $templates, $this->templates );
//Add the modified cache to allow WordPress to pick it up for listing
//available templates
wp_cache_add( $cache_key, $templates, 'themes', 1800 );
return $atts;
} 
/**
* Checks if the template is assigned to the page
*/
public function view_project_template( $template ) {
global $post;
if (!isset($this->templates[get_post_meta( 
$post->ID, '_wp_page_template', true 
)] ) ) {
return $template;
} 
$file = plugin_dir_path(__FILE__). get_post_meta( 
$post->ID, '_wp_page_template', true 
);
//Just to be safe, we check if the file exist first
if( file_exists( $file ) ) {
return $file;
} 
else { echo $file; }
return $template;
} 
} 
add_action( 'plugins_loaded', array( 'PageTemplater', 'get_instance' ) );

Consulter mon tutoriel sur ce pour plus d'info.

http://www.wpexplorer.com/wordpress-page-templates-plugin/

J'espère que cela vous aide dans ce que vous voulez faire 🙂

OriginalL'auteur Harri Bell-Thomas