ヘッドレスWordPress：分離されたWordPressを作成することの浮き沈み

 { "name": "Test dev site", "description": "Just another WordPress site", "url": "https://dev.wordpress.test", "home": "https://dev.wordpress.test", "gmt_offset": "0", "timezone_string": "", "namespaces": [ "oembed/1.0", "wp/v2" ], "authentication": [], "routes": { "/": { "namespace": "", "methods": [ "GET" ], "endpoints": [ { "methods": [ "GET" ], "args": { "context": { "required": false, "default": "view" } } } ], "_links": { "self": "https://dev.wordpress.test/wp-json/" } }, "/oembed/1.0": { "namespace": "oembed/1.0", "methods": [ "GET" ], "endpoints": [ { "methods": [ "GET" ], "args": { "namespace": { "required": false, "default": "oembed/1.0" }, "context": { "required": false, "default": "view" } } } ], "_links": { "self": "https://dev.wordpress.test/wp-json/oembed/1.0" } }, ... "wp/v2": { ...

 <?php /** * Test plugin * * @since 1.0.0 * @package test_plugin * * @wordpress-plugin * Plugin Name: Test Documentation Plugin * Plugin URI: * Description: The test plugin that adds rest functionality * Version: 1.0.0 * Author: Infinum <[email protected]> * Author URI: https://infinum.co/ * License: GPL-2.0+ * License URI: https://www.gnu.org/licenses/gpl-2.0.txt * Text Domain: test-plugin */ namespace Test_Plugin; // If this file is called directly, abort. if ( ! defined( 'WPINC' ) ) { die; } /** * Class that holds all the necessary functionality for the * documentation custom post type * * @since 1.0.0 */ class Documentation { /** * The custom post type slug * * @var string * * @since 1.0.0 */ const PLUGIN_NAME = 'documentation-plugin'; /** * The custom post type slug * * @var string * * @since 1.0.0 */ const POST_TYPE_SLUG = 'documentation'; /** * The custom taxonomy type slug * * @var string * * @since 1.0.0 */ const TAXONOMY_SLUG = 'documentation-category'; /** * Register custom post type * * @since 1.0.0 */ public function register_post_type() { $args = array( 'label' => esc_html( 'Documentation', 'test-plugin' ), 'public' => true, 'menu_position' => 47, 'menu_icon' => 'dashicons-book', 'supports' => array( 'title', 'editor', 'revisions', 'thumbnail' ), 'has_archive' => false, 'show_in_rest' => true, 'publicly_queryable' => false, ); register_post_type( self::POST_TYPE_SLUG, $args ); } /** * Register custom tag taxonomy * * @since 1.0.0 */ public function register_taxonomy() { $args = array( 'hierarchical' => false, 'label' => esc_html( 'Documentation tags', 'test-plugin' ), 'show_ui' => true, 'show_admin_column' => true, 'update_count_callback' => '_update_post_term_count', 'show_in_rest' => true, 'query_var' => true, ); register_taxonomy( self::TAXONOMY_SLUG, [ self::POST_TYPE_SLUG ], $args ); } } $documentation = new Documentation(); add_action( 'init', [ $documentation, 'register_post_type' ] ); add_action( 'init', [ $documentation, 'register_taxonomy' ] );

 [ { "id": 4, "date": "2018-06-11T19:48:51", "date_gmt": "2018-06-11T19:48:51", "guid": { "rendered": "https://dev.wordpress.test/?post_type=documentation&p=4" }, "modified": "2018-06-11T19:48:51", "modified_gmt": "2018-06-11T19:48:51", "slug": "test-documentation", "status": "publish", "type": "documentation", "link": "https://dev.wordpress.test/documentation/test-documentation/", "title": { "rendered": "Test documentation" }, "content": { "rendered": "
 これはいくつかのドキュメントコンテンツです
\ n "、
            「保護された」：false
        }、
        "featured_media"：0、
        "テンプレート"： ""、
        "ドキュメント-カテゴリ"：[
            2
        ]、
        "_links"：{
            「自己」：[
                {{
                    "href"： "https：//dev.wordpress.test/wp-json/wp/v2/documentation/4"
                }
            ]、
            「コレクション」：[
                {{
                    "href"： "https：//dev.wordpress.test/wp-json/wp/v2/documentation"
                }
            ]、
            "だいたい"： [
                {{
                    "href"： "https：//dev.wordpress.test/wp-json/wp/v2/types/documentation"
                }
            ]、
            "バージョン履歴"：[
                {{
                    "href"： "https：//dev.wordpress.test/wp-json/wp/v2/documentation/4/revisions"
                }
            ]、
            "wp：attachment"：[
                {{
                    "href"： "https：//dev.wordpress.test/wp-json/wp/v2/media？parent = 4"
                }
            ]、
            "wp：term"：[
                {{
                    "taxonomy"： "documentation-category"、
                    「埋め込み可能」：true、
                    "href"： "https：//dev.wordpress.test/wp-json/wp/v2/documentation-category？post = 4"
                }
            ]、
            「キュリー」：[
                {{
                    "名前"： "wp"、
                    "href"： "https://api.w.org/ {rel}"、
                    「テンプレート化された」：true
                }
            ]
        }
    }
]

 /** * Create a custom endpoint * * @since 1.0.0 */ public function create_custom_documentation_endpoint() { register_rest_route( self::PLUGIN_NAME . '/v1', '/custom-documentation', array( 'methods' => 'GET', 'callback' => [ $this, 'get_custom_documentation' ], ) ); } /** * Create a callback for the custom documentation endpoint * * @return string JSON that indicates success/failure of the update, * or JSON that indicates an error occurred. * @since 1.0.0 */ public function get_custom_documentation() { /* Some permission checks can be added here. */ // Return only documentation name and tag name. $doc_args = array( 'post_type' => self::POST_TYPE_SLUG, 'post_status' => 'publish', 'perm' => 'readable' ); $query = new \WP_Query( $doc_args ); $response = []; $counter = 0; // The Loop if ( $query->have_posts() ) { while ( $query->have_posts() ) { $query->the_post(); $post_id = get_the_ID(); $post_tags = get_the_terms( $post_id, self::TAXONOMY_SLUG ); $response[ $counter ]['title'] = get_the_title(); foreach ( $post_tags as $tags_key => $tags_value ) { $response[ $counter ]['tags'][] = $tags_value->name; } $counter++; } } else { $response = esc_html__( 'There are no posts.', 'documentation-plugin' ); } /* Restore original Post Data */ wp_reset_postdata(); return rest_ensure_response( $response ); }

 add_action( 'rest_api_init', [ $documentation, 'create_custom_documentation_endpoint' ] );

 <?php /** * Create simple wp configuration for the routes * * @since 1.0.0 * @package json-transient */ define( 'SHORTINIT', true ); $parse_uri = explode( 'wp-content', $_SERVER['SCRIPT_FILENAME'] ); require_once filter_var( $parse_uri[0] . 'wp-load.php', FILTER_SANITIZE_STRING );

* Author URI: https://infinum.co/ * License: GPL-2.0+ * License URI: https://www.gnu.org/licenses/gpl-2.0.txt * Text Domain: json-transient */ namespace Json_Transient; // If this file is called directly, abort. if ( ! defined( 'WPINC' ) ) { die; } class Init { /** * Get the array of allowed types to do operations on. * * @return array * * @since 1.0.0 */ public function get_allowed_post_types() { return array( 'post', 'page' ); } /** * Check if post type is allowed to be save in transient. * * @param string $post_type Get post type. * @return boolean * * @since 1.0.0 */ public function is_post_type_allowed_to_save( $post_type = null ) { if( ! $post_type ) { return false; } $allowed_types = $this->get_allowed_post_types(); if ( in_array( $post_type, $allowed_types, true ) ) { return true; } return false; } /** * Get Page cache name for transient by post slug and type. * * @param string $post_slug Page Slug to save. * @param string $post_type Page Type to save. * @return string * * @since 1.0.0 */ public function get_page_cache_name_by_slug( $post_slug = null, $post_type = null ) { if( ! $post_slug || ! $post_type ) { return false; } $post_slug = str_replace( '__trashed', '', $post_slug ); return 'jt_data_' . $post_type . '_' . $post_slug; } /** * Get full post data by post slug and type. * * @param string $post_slug Page Slug to do Query by. * @param string $post_type Page Type to do Query by. * @return array * * @since 1.0.0 */ public function get_page_data_by_slug( $post_slug = null, $post_type = null ) { if( ! $post_slug || ! $post_type ) { return false; } $page_output = ''; $args = array( 'name' => $post_slug, 'post_type' => $post_type, 'posts_per_page' => 1, 'no_found_rows' => true ); $the_query = new \WP_Query( $args ); if ( $the_query->have_posts() ) { while ( $the_query->have_posts() ) { $the_query->the_post(); $page_output = $the_query->post; } wp_reset_postdata(); } return $page_output; } /** * Return Page in JSON format * * @param string $post_slug Page Slug. * @param string $post_type Page Type. * @return json * * @since 1.0.0 */ public function get_json_page( $post_slug = null, $post_type = null ) { if( ! $post_slug || ! $post_type ) { return false; } return wp_json_encode( $this->get_page_data_by_slug( $post_slug, $post_type ) ); } /** * Update Page to transient for caching on action hooks save_post. * * @param int $post_id Saved Post ID provided by action hook. * * @since 1.0.0 */ public function update_page_transient( $post_id ) { $post_status = get_post_status( $post_id ); $post = get_post( $post_id ); $post_slug = $post->post_name; $post_type = $post->post_type; $cache_name = $this->get_page_cache_name_by_slug( $post_slug, $post_type ); if( ! $cache_name ) { return false; } if( $post_status === 'auto-draft' || $post_status === 'inherit' ) { return false; } else if( $post_status === 'trash' ) { delete_transient( $cache_name ); } else { if( $this->is_post_type_allowed_to_save( $post_type ) ) { $cache = $this->get_json_page( $post_slug, $post_type ); set_transient( $cache_name, $cache, 0 ); } } } } $init = new Init(); add_action( 'save_post', [ $init, 'update_page_transient' ] );

 $transient_name = get_transient( 'transient_name' ); if ( $transient_name === false ) { set_transient( 'transient_name', $transient_data, $transient_expiry ); }

 get_page_cache_name_by_slug( $post_slug, $post_type ) ); // Return error on false. if ( $cache === false ) { wp_send_json( 'Error, the page does not exist or it is not cached correctly. Please try rebuilding cache and try again!' ); } // Decode json for output. wp_send_json( json_decode( $cache ) );

 { "ID": 1, "post_author": "1", "post_date": "2018-06-26 18:28:57", "post_date_gmt": "2018-06-26 18:28:57", "post_content": "Welcome to WordPress. This is your first post. Edit or delete it, then start writing!", "post_title": "Hello world!", "post_excerpt": "", "post_status": "publish", "comment_status": "open", "ping_status": "open", "post_password": "", "post_name": "hello-world", "to_ping": "", "pinged": "", "post_modified": "2018-06-30 08:34:52", "post_modified_gmt": "2018-06-30 08:34:52", "post_content_filtered": "", "post_parent": 0, "guid": "http:\/\/dev.wordpress.test\/?p=1", "menu_order": 0, "post_type": "post", "post_mime_type": "", "comment_count": "1", "filter": "raw" }

 header( 'Access-Control-Allow-Origin: your-front-end-app.url' ); header( 'Content-Type: application/json' );