ساخت custom post type در وردپرس و متاهای آن

در این آموزش یاد میگیریم که چطور در وردپرس custom post type تعریف و برای این پست ها، متاهای مختص خودشون رو اضافه کنیم.

حتما ببینید (تکمیلی ویدیو بالا) : ساخت دسته بندی مختص پست تایپ (cpt) در وردپرس

<?php

/**
*/
/*
Plugin Name: Real Estate CPT
Plugin URI: https://radwebdesign.ir
Description: Real EstateCustom Post Type
Version: 1.0
Author: Reza Rad
Author URI: https://radwebdesign.ir
Text Domain: real-estate
*/

function real_estate() {

  $labels = array(
    'name' => _x('Properties', 'Post Type General Name', 'real-estate'),
    'singular_name' => _x('Property', 'Post Type Singular Name', 'real-estate'),
    'menu_name' => __('Properties', 'real-estate'),
    'parent_item_colon' => __('Parent Property', 'real-estate'),
    'all_items' => __('All Properties', 'real-estate'),
    'view_item' => __('View Property', 'real-estate'),
    'add_new_item' => __('Add New Property', 'real-estate'),
    'add_new' => __('Add New Property', 'real-estate'),
    'edit_item' => __('Edit Property', 'real-estate'),
    'update_item' => __('Update Property', 'real-estate'),
    'search_items' => __('Search Property', 'real-estate'),
    'not_found' => __('Not Found', 'real-estate'),
    'not_found_in_trash' => __('Not found in Trash', 'real-estate'),
  );

  $args = array(
    'label' => __('Real Estate', 'real-estate'),
    'description' => __('Real Estate Properties', 'real-estate'),
    'labels' => $labels,
    // Features this CPT supports in Post Editor
    'supports' => array('title', 'editor', 'excerpt', 'author', 'thumbnail', 'comments', 'revisions', 'custom-fields',),
    // You can associate this CPT with a taxonomy or custom taxonomy.
    'taxonomies' => array('genres'),
    /* A hierarchical CPT is like Pages and can have
        * Parent and child items. A non-hierarchical CPT
        * is like Posts.
        */
    'hierarchical' => false,
    'public' => true,
    'show_ui' => true,
    'show_in_menu' => true,
    'show_in_nav_menus' => true,
    'show_in_admin_bar' => true,
    'menu_position' => 5,
    'can_export' => true,
    'has_archive' => true,
    'exclude_from_search' => false,
    'publicly_queryable' => true,
    'capability_type' => 'post',
    'show_in_rest' => true,
    'register_meta_box_cb' => 'wpt_add_movie_metaboxes',
  );

  register_post_type('realestate', $args);
  
  register_taxonomy('realestate-taxonomy', 'realestate', array(
    'label' => __('دسته بندی املاک','real-estate'),
    'rewrite' => array('slug' => 'realstate-category'),
    'hierarchical' => true
    ));
    
}

add_action('init', 'real_estate');

/// Adding post meta

function add_meta_realestate() {
  add_meta_box(
    'propertymeta',
    'متاهای املاک ',
    'add_meta_inputs',
    'realestate',
    'side', // normal, side
    'default'
  );

  function add_meta_inputs() {
    global $post;

    // Nonce field to validate form request came from current site
    wp_nonce_field(basename(__FILE__), 'event_fields');

    $area = get_post_meta($post->ID, 'area', true);
    $age = get_post_meta($post->ID, 'age', true);


    echo 'مساحت: <input type="text" name="area" value="' . esc_textarea($area)  . '" class="widefat">';
    echo 'سن ساختمان: <input type="text" name="age" value="' . esc_textarea($age)  . '" class="widefat">';
  }

}



add_action('add_meta_boxes', 'add_meta_realestate');


// Saving meta to database => wp-postmeta

function save_post_meta($post_id, $post) {

  // Return if the user doesn't have edit permissions.
  if (! current_user_can('edit_post', $post_id)) {
    return $post_id;
  }

  // Verify this came from the our screen and with proper authorization,
  // because save_post can be triggered at other times.
  if ((! isset($_POST['area']) && ! isset($_POST['age'])) || ! wp_verify_nonce($_POST['event_fields'], basename(__FILE__))) {
    return $post_id;
  }

  $metas['area'] = esc_textarea($_POST['area']);
  $metas['age'] = esc_textarea($_POST['age']);

  // meta ---------> ['area' => '', 'age' => '']

  foreach ($metas as $key => $value):
  // Don't store custom data twice
  if ('revision' === $post->post_type) {
    return;
  }

  if (get_post_meta($post_id, $key, false))
    update_post_meta($post_id, $key, $value);
  else
    add_post_meta($post_id, $key, $value);

  if (! $value)
    delete_post_meta($post_id, $key);

  endforeach;


}

add_action('save_post', 'save_post_meta', 1, 2);