WordPress Review custom post type

review-custom-post-type.php

<?php
/*
Plugin Name: Review Custom Post Type
Plugin URI: http://wanderlusting.me
Description: Describe what your plugin does and why you created it.
Version: 1.0
Author: Arthur Kho
Author URI: https://github.com/islandjoe
*/

// Register the custom post type function.
add_action( 'init', function () {
  // Rewrite the permalink structure so that instead of: 
  //    /lifeinthephilippines/review/hotel/the-post
  // it becomes: 
  //    /lifeinthephilippines/hotel-review/the-post
  global $wp_rewrite;
  $review_structure = '/%review-type%-review/%review%';
  $wp_rewrite->add_rewrite_tag("%review%", '([^/]+)', "review=");
  $wp_rewrite->add_permastruct('review', $review_structure, false);
  
  /**
   * Register the 'review' post type.
   * @link http://codex.wordpress.org/Function_Reference/register_post_type
   **/
  register_post_type( 'review', [
    'labels' => [
		'name' => _x( 'Reviews', 'general name for the post type, usually plural' ),
		'singular_name' => _x( 'Review', 'name for one object of this post type' ),
		'add_new' => _x( 'Add New', 'review' ),
		'add_new_item' => __( 'Add New Review' ),
		'edit_item' => __( 'Edit Review' ),
		'new_item' => __( 'New Review' ),
		'all_items' => __( 'All Reviews' ),
		'view_item' => __( 'View Review' ),
		'search_items' => __( 'Search Reviews' ),
		'not_found' => __( 'No reviews found' ),
		'not_found_in_trash' => __( 'No reviews found in the Trash' ), 
		'parent_item_colon' => '',
		'menu_name' => 'Review'
	],
	'menu_icon' => 'dashicons-star-half',
	'description' => "What the custom post type is about. What it does and why you're using it.",
	'public' => true,
	'menu_position' => 5,
	'supports' => [ 'title', 'editor', 'thumbnail', 'excerpt', 'trackbacks', 'comments', 'shortlinks', 'author' ],
	'has_archive' => true,
	'publicly_queryable' => true,
	'query_var' => true,
	'rewrite' => false
	] );  
 } ); // add_action('init')

//-- Meta box code below (e.g., add_action('admin_init')) --//
/* IMPORTANT! 
Do not forget to update the $fields_id array 
in 'save_post' action with the metabox's id */

// Meta Box for name of reviewed thing
add_action( 'admin_init', function() {
	$id 		= 'name-metabox';
	$title 		= __( 'Name', 'wme-lifeph' );
	$post_type 	= 'review';
	$context 	= 'normal';
	$priority 	= 'default';
	$callback	= function($review) {
		echo '<input type="text" name="name" id="name" class="widefat" value="'. 
			esc_html( get_post_meta( $review->ID, 'name', true ) ) .'" />';
	};

	add_meta_box( $id, $title, $callback, $post_type, $context, $priority );
});

// Meta Box for Rating
add_action( 'admin_init', function() {
	$id = 'rating-metabox';
	$title = __( 'Rating', 'wme-lifeph' );
	$post_type 	= 'review';
	$context = 'normal';
	$priority	= 'default';
	$callback	= function($review) {
	  $rating = intval( get_post_meta( $review->ID, 'rating', true ));
	  echo '<select name="rating" id="rating">';
      foreach ([1,2,3,4,5] as $n):
        echo '<option value="', $n, '" ', selected( $rating, $n ), '>', $n;
      endforeach;
      echo '</select>';
    echo ' out of 5'; 
	};

	add_meta_box( $id, $title, $callback, $post_type, $context, $priority );
});


// Meta Box for PROS and CONS
add_action( 'admin_init', function() {
	$id = 'pros-metabox';
	$title = __( 'PROS', 'wme-lifeph' );
	$post_type 	= 'review';
	$context 	= 'normal';
	$priority	= 'default';
	$callback	= function($review) {
		echo '<textarea name="pros" id="pros" rows="5" style="width:100%">', 
		        esc_html( get_post_meta( $review->ID, 'pros', true ) ) ,
		     '</textarea>';
	};

	add_meta_box( $id, $title, $callback, $post_type, $context, $priority );
});

add_action( 'admin_init', function() {
	$id = 'cons-metabox';
	$title = __( 'CONS', 'wme-lifeph' );
	$post_type 	= 'review';
	$context = 'normal';
	$priority	= 'default';
	$callback	= function($review) {
		echo '<textarea name="cons" id="cons" rows="5" style="width:100%">',
		      esc_html( get_post_meta( $review->ID, 'cons', true ) ) ,
		     '</textarea>';
	};

	add_meta_box( $id, $title, $callback, $post_type, $context, $priority );
});


add_action( 'admin_head', function() {
  global $post;
      
  $metabox_review = function () {
   	$id = 'review-metabox';
   	$title = __( 'Ratings', 'wme-lifeph' );
   	$post_type 	= 'review';
   	$context 	= 'normal';
   	$priority	= 'default';
   	$callback	= function($review) {
      $location	= intval( get_post_meta( $review->ID, 'location-rating', true ) );
      $ambience	= intval( get_post_meta( $review->ID, 'ambience-rating', true ) );
      $service = intval( get_post_meta( $review->ID, 'service-rating', true ) );
      $cleanliness = intval( get_post_meta( $review->ID, 'cleanliness-rating', true ) );
      $value = intval( get_post_meta( $review->ID, 'value-rating', true ) );
         
      $labels = ['Location'=>$location, 'Ambience'=>$ambience, 'Service'=>$service, 'Cleanliness'=>$cleanliness, 'Value'=>$value]; 
      echo '<table width="100%">';
         	  
      foreach ($labels as $label=>$rating):
        $id = sprintf("%s-rating", strtolower($label) );
       	echo '<tr>',
     		     '<td>', $label, '</td>';
      		echo '<td style="text-align:right">',
               '		<select name="', $id, '" id="', $id, '">';
            foreach ([1,2,3,4,5] as $n):
          echo '      <option value="', $n, '" ', selected( $rating, $n ), '>', $n;
            endforeach;
          echo '</select>',
               '</td>',
               '</tr>';
            endforeach;
            ?>
          </table><?
      	};
      
      	add_meta_box( $id, $title, $callback, $post_type, $context, $priority );
      };
      
      $terms = get_the_terms($post->ID, 'review-type');

      if ( 'hotel' == $terms[0]->slug ) {
        add_action( 'admin_init', $metabox_review() );
      }
} );

add_action( 'save_post', function( $review_id, $review) {
  
	if ( 'review' == $review->post_type ) {
		$doUpdate = function( $field_id ) use ( $review_id ) {
			if ( isset( $_POST[ $field_id ] ) && $_POST[ $field_id ] !== '' ) {
        update_post_meta( $review_id, $field_id, $_POST[ $field_id ] );
	    }
	  }; //$doUpdate

    $fields_id = ['name',
                  'rating',
                  'location-rating', 
                  'ambience-rating', 
                  'service-rating', 
                  'cleanliness-rating', 
                  'value-rating',
                  'pros', 
                  'cons'];

    foreach ($fields_id as $field) {
	    	if ( isset( $_POST[ $field ] ) && $_POST[ $field ] !== '' ) {
          update_post_meta( $review_id, $field, $_POST[ $field ] );
  	    }
    } //foreach
    
    
	}
}, 10, 2 );

// Taxonomy
add_action( 'init', function () {
    register_taxonomy(
        'review-type', //Taxonomy name
        'review', 	    //Custom post type
        array(
            'labels' => array(
                'name' => 'Review Type',
                'add_new_item' => 'Add New Review Type',
                'new_item_name' => "New Review Type"
            ),
            'show_ui' => true,
            'show_tagcloud' => false,
            'hierarchical' => true,
            'query_var' => 'review-type',
            'rewrite' => true
        )
    );
}, 0 );

foreach (['post_link', 'post_type_link'] as $v) {
	add_filter( $v, function ($permalink, $post_id, $leavename) {
	    if (strpos($permalink, '%review-type%') === FALSE) return $permalink;
	     
	        // Get post
	        $post = get_post($post_id);
	        if (!$post) return $permalink;
	 
	        // Get taxonomy terms
	        $terms = wp_get_object_terms($post->ID, 'review-type');   
	        if (!is_wp_error($terms) && !empty($terms) && is_object($terms[0])) $taxonomy_slug = $terms[0]->slug;
	        else $taxonomy_slug = 'generic';
	 
	    return str_replace('%review-type%', $taxonomy_slug, $permalink);
	} , 10, 3);
}

// Tags
add_action( 'init', function () {
    register_taxonomy(
        'review-tags', 
        'review',
        array(
            'labels' => array(
                'name' => 'Tags',
                'add_new_item' => 'Add New Tags',
                'new_item_name' => "New Tag"
            ),
            'show_ui' => true,
            'show_tagcloud' => false,
            'hierarchical' => false
        )
    );
}, 0 );
 
// Force the use of our dedicated template
add_filter( 'template_include', function( $template_path ) {
	$post_type = 'review';
	$template_file_name = sprintf("single-%s.php", $post_type);

	if ( get_post_type() == $post_type ) {
        if ( is_single() ) {
            // Check first if the file exists in the theme...
            // otherwise serve the file from the plugin.
            if ( $theme_file = locate_template( [ $template_file_name ] ) ) {
                $template_path = $theme_file;
            } else {
                $template_path = plugin_dir_path( __FILE__ ) . $template_file_name;
            }
        }
    }
    return $template_path;
}, 1 );

// Display review posts on the home page
add_filter( 'pre_get_posts', function($query) {
	if ( is_home() && $query->is_main_query() )
		$query->set( 'post_type', array( 'post', 'review' ) );

	return $query;
} );