• Mon. Oct 18th, 2021

    php – Integrate admin plugin into template. Very interesant (live search + autocomplete with wp rest api, in vanilla js)

    Byadmin

    Sep 18, 2021


    I need a live search with wp rest api with autocomplete, in vanilla js. I found this plugin makes exacly what I needed. (I dont need this code as a plugin, its not a problem, but if it helps to make it easier, if anyone knows how to do this code works without it beign a plugin, let me know.)

    TUTORIAL: https://sabrinazeidan.com/wp-rest-api-search-with-autocomplete-with-vanilla-js/

    Github: https://github.com/sabrina-zeidan/sz-rest-api-tut

    In this case, the plugin creates a page into the tools section but it doesnt gives me support to integrate it into the template , and I dont know how execute it into the template by myself. The code is shown above:

    <?php
    /**
     * Plugin Name: SZ WP REST API Tutorial
     * Description: It's an example of WP REST API usage for search with autocomplete with vanilla JS
     * Plugin URI:  
     * Author:      Sabrina Zeidan
     * Author URI:  https://sabrinazeidan.com
     * License:     GNU General Public License v2 or later
     * License URI: http://www.gnu.org/licenses/gpl-2.0.html
     *
     */
    
    defined( 'ABSPATH' ) or die();
    
    class SZ_WP_REST_API_Tut { 
        function __construct() {        
            add_action( 'admin_menu', array( $this, 'admin_menu' ) ); //Add an item to the Tools menu       
            add_filter('plugin_action_links_' . plugin_basename(__FILE__), array( $this, 'plugin_actions_links' ) ); //Add a link on Plugins page
            
            add_action( 'rest_api_init', array( $this, 'rest_api_init') ); // Initialize the REST API routes.       
        } 
     
        public function admin_menu() {
               $hook = add_management_page( 'SZ WP REST API', 'SZ WP REST API', 'manage_options', 'sz-search', array( $this, 'admin_page_content' )); //Add a page to the Tools menu
               add_action( "load-$hook", array( $this, 'admin_page_load' ) );//hook to load stuff on that page
        }
        function plugin_actions_links( array $actions ) {
                return array_merge( array(
                'sz-search'    => sprintf('<a href="%s">%s</a>', esc_url( admin_url( 'tools.php?page=sz-search' ) ),esc_html__( 'See it', '' ))), $actions );
        }
        function admin_page_load() {
            add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) ); // Load needed JavaScript and CSS     
        }
        
        function enqueue_scripts() {
                wp_enqueue_style( 'awesomplete-css', plugin_dir_url( __FILE__ ) . 'awesomplete/awesomplete.css'); //Awesomplete widget
                wp_enqueue_script('awesomplete-js', plugin_dir_url( __FILE__ ) . 'awesomplete/awesomplete.js'); //Awesomplete widget
                wp_enqueue_script('sz-search', plugin_dir_url( __FILE__ ) . 'search.js', array('awesomplete-js')); //Our Awesomplete settings are here
                wp_localize_script('sz-search', 'szsearch', array(
                    'search_url' => home_url( '/wp-json/sz-search/search?term=' ), // URL to access REST API endpoint
                    'nonce' => wp_create_nonce('wp_rest') ) //For authorization
                );  
        }
        
        function rest_api_init() { 
            register_rest_route( 'sz-search', '/search', array( 
                'methods'  => 'GET',
                'callback' => array( $this, 'sz_rest_api_search'), //exactly how we search
                'permission_callback' => function( WP_REST_Request $request ) { return current_user_can( 'manage_options' ); } //Restrict endpoint to  internal calls 
            ) );
        }
        
        function sz_rest_api_search( WP_REST_Request $request ) {
            $search_term = $request->get_param( 'term' );//Our input from the field
            if ( empty( $search_term ) ) {
                return;
            }   
                //The way we're gonna search
                $args = array(
                    'post_type' => 'post',
                    'post_status' => 'publish',
                    'posts_per_page'   => 3,
                    'fields'   => 'ids',
                    's'             => $search_term,
                    'no_found_rows' => true,  
                    'update_post_meta_cache' => false,
                    'update_post_term_cache' => false,
                    );
                $the_query = new WP_Query( $args );                             
                $this_blog_found_posts = $the_query->posts;
                    $temp = array();
                    foreach( $this_blog_found_posts as $key => $post_id) { 
                        $temp = array(
                            'ID' => $post_id,
                            'permalink' => get_permalink($post_id),
                            'label' => get_the_title($post_id),
                            );
                        $posts[] = $temp;                                           
                    }   
            
                if (!empty($posts)) return $posts;
        }   
        
        function admin_page_content() {
            echo '<div class="wrap">';
            echo '<h1>' . esc_html_x( 'SZ WP REST API Search with autocomplete with Vanilla JavaScript', 'admin page title', 'sz-wp-rest-api-search' ) . '</h1>';       
            echo '<p>This is a search field intended to demostrate a result of WP REST API. Does it work? :)</br>';
            echo '<p><input type="text" size="80" id="sz-search-field" name="sz-search-field" value="" placeholder="Start typing the title of the post...">';//Our search field
            echo '<br><input type="hidden" size="80" id="sz_result_id" name="sz_result_id" value="">';//Hidden field to pass post ID
            echo '<br><input type="hidden" size="80" id="sz_result_permalink" name="sz_result_permalink" value="">';//Hidden field to pass post permalink
            echo '</div>';
        }
    }
    new SZ_WP_REST_API_Tut(); //Let's do it!
    ?>
    

    What Ive tried is to create the object, and then call the function that shows the input field.

    <?php
        $search = new SZ_WP_REST_API_Tut();
        $search->admin_page_content();
    ?>
    

    This shows the input field, but it doesnt make the live search works. I would try more solutions by myself but in this case I dont know what more can I do, I’m stucked.



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