Add code to register custom fields for all post types

includes/api/class-register-custom-fields.php

@@ -0,0 +1,81 @@
+<?php
+/**
+ * Register custom post types
+ *
+ * @package           WritePoetry
+ * @subpackage        WritePoetry/Api
+ * @author            Giacomo Secchi <[email protected]>
+ * @copyright         2023 Giacomo Secchi
+ * @license           GPL-2.0-or-later
+ * @since             0.3.5
+ */
+
+namespace WritePoetry\Api;
+
+use WritePoetry\Base\Base_Controller;
+
+
+/**
+ * Registers meta keys for posts class.
+ */
+class Register_Custom_Fields extends Base_Controller {
+
+
+	/**
+	 * Initialize the class
+	 */
+	public function register() {
+		add_action( 'wp_loaded', array( $this, 'register_post_meta' ) );
+	}
+
+
+	/**
+	 * Register All Post Type
+	 *
+	 * @since  0.3.5
+	 * @access public
+	 * @return void
+	 */
+	public function register_post_meta() {
+    	// Get all post types.
+		$post_types = get_post_types( array(), 'names' );
+
+		// Loop through each post type and register custom fields.
+		foreach ( $post_types as $post_type ) {
+			$this->register_custom_field(
+				apply_filters( "{$this->prefix}_add_custom_fields_to_{$post_type}", array() ),
+				$post_type
+			);
+		}
+	}
+
+	/**
+	 * Registers custom fields for a specific post type.
+	 *
+	 * @param array  $custom_fields Array of custom fields.
+	 * @param string $post_type     Post type to register custom fields for.
+	 */
+	public function register_custom_field( $custom_fields, $post_type ) {
+
+		// Default Post Type Arguments.
+		$default_args = array(
+			'show_in_rest'	=> true,
+        	'single'		=> true,
+        	'type'			=> 'string',
+			'default'       => 'ciaone',
+		);
+
+		foreach ( $custom_fields as $custom_field => $args ) {
+			if ( ! post_type_exists( $post_type ) ) {
+				continue; // Use continue instead of return to avoid breaking the entire function
+			}
+
+			// Merge default arguments with specific arguments.
+			$args = array_merge( $default_args, $args );
+
+			// Register the meta field for the post type.
+			register_post_meta( $post_type, $custom_field, $args );
+		}
+
+	}
+}

includes/base/class-base-controller.php

@@ -43,7 +43,7 @@ public function __construct() {
 	 */
 	public function __get( $property ) {
 
-		if ( property_exists( $this->config, $property ) ) {
+		if ( $this->config && property_exists( $this->config, $property ) ) {
 			return $this->config->$property;
 		} else {
 			throw new \Exception( esc_html( "Property '$property' does not exist." ) );

includes/class-init.php

@@ -32,6 +32,7 @@ public static function get_services() {
 		$services = array(
 			Api\Register_Post_Types::class,
 			Api\Register_Post_Taxonomies::class,
+			Api\Register_Custom_Fields::class,
 			Base\Development\Maintenance_Mode::class,
 			Base\Development\Utils::class,
 			Base\Utils::class,

includes/plugins/jetpack/class-portfolio.php

@@ -13,6 +13,7 @@
 namespace WritePoetry\Plugins\Jetpack;
 
 use WritePoetry\Base\Base_Controller;
+use WritePoetry\Api\Register_Custom_Fields;
 
 /**
  * Class Portfolio
@@ -23,22 +24,28 @@ class Portfolio extends Base_Controller {
 
 	const CUSTOM_POST_TYPE = 'jetpack-portfolio';
 
+	private $register_custom_fields;
+
+
 	/**
 	 * Invoke hooks.
 	 *
 	 * @return void
 	 */
 	public function register() {
+
+		$this->register_custom_fields = new Register_Custom_Fields();
+
 		add_filter(
 			'wp_loaded',
 			function () {
 				if ( ! post_type_exists( self::CUSTOM_POST_TYPE ) ) {
 					return;
 				}
-
  				add_action( 'enqueue_block_editor_assets', array( $this, 'enqueue_block_assets' ) );
 				// Add meta box to ensure backward compatibility with the Classic Editor.
 				add_action( 'add_meta_boxes', array( $this, 'add_portfolio_meta_box' ) );
+
 				$this->register_portfolio_meta();
 			}
 		);
@@ -70,61 +77,33 @@ public function enqueue_block_assets() {
 	}
 
 	/**
-	 * Register portfolio meta.
+	 * Register portfolio custom meta fields.
 	 *
 	 * @return void
 	 */
 	public function register_portfolio_meta() {
-		$default_args = array();
+		$default_args = array(
+        	'type'			=> 'string',
+			'default'       => 'project_',
+		);
 
 		$meta_fields = array(
-			'project_url' =>  $default_args,
-			'project_year' => array(
+			"{$this->prefix}_project_url" =>  $default_args,
+			"{$this->prefix}_project_year" => array(
 				'type' => 'number',
 				'default' => date( 'Y' ),
 				'description' =>  'Year of the project',
 			),
-			'project_client' =>  $default_args,
-			'project_expertise' =>  $default_args,
-			'project_industry' =>  $default_args
+			"{$this->prefix}_project_client" =>  $default_args,
+			"{$this->prefix}_project_expertise" =>  $default_args,
+			"{$this->prefix}_project_industry" =>  $default_args
 		);
 
-		foreach( $meta_fields as $meta_field  => $args ) {
-			$this->register_post_meta( "{$this->prefix}_$meta_field", $args );
-		}
+		// Register custom fields for the portfolio post type.
+		$this->register_custom_fields->register_custom_field( $meta_fields, self::CUSTOM_POST_TYPE );
 	}
 
-	/**
-	 * Register post meta.
-	 *
-	 * @param string $meta_key Meta key.
-	 * @param array  $args Meta args.
-	 *
-	 * @return void
-	 */
-	private function register_post_meta( $meta_key, $args ) {
-
-		$meta_args = array(
-			'show_in_rest'  => true,
-			'single'        => true,
-			'sanitize_callback' => 'sanitize_text_field',
-		);
-
-		$possible_keys = [ 'type', 'default', 'description' ];
-
-		foreach ( $possible_keys as $key ) {
 
-			if ( isset( $args[$key] ) ) {
-				$meta_args[$key] = $args[$key];
-			}
-		}
-
-		register_post_meta(
-			self::CUSTOM_POST_TYPE,
-			$meta_key,
-			$meta_args
-		);
-	}
 
 	/**
 	 * Add portfolio meta box.

mu-plugins/project-custom-functions.php

@@ -210,3 +210,53 @@ function () {
 	10,
 	3
 );
+
+
+add_filter(
+	'writepoetry_add_custom_fields_to_post',
+	function () {
+		$meta_keys = array(
+			'test_meta_key' => array(
+				'show_in_rest' => true,
+				'single'       => true,
+				'type'         => 'boolean',
+				'default'      => false,
+			),
+			'test_meta_key2' => array(
+				'show_in_rest' => true,
+				'single'       => true,
+				'type'         => 'string'
+			),
+		);
+
+		return $meta_keys;
+	},
+	10,
+	3
+);
+
+add_filter(
+	'writepoetry_add_custom_fields_to_page',
+	function () {
+		$meta_keys = array(
+			'test_page' => array(
+				'show_in_rest' => true,
+				'single'       => true,
+				'type'         => 'test',
+				'default'      => false,
+			),
+			'test_page_key2' => array(
+				'show_in_rest' => true,
+				'single'       => true,
+				'type'         => 'string',
+				'default'      => 'test2',
+			),
+		);
+
+		return $meta_keys;
+	},
+	10,
+	3
+);
+
+