class.cpt.php

<?php

class MyCPTs {

    public function __construct() {
        add_action( 'init', array ( $this, 'load_cpts'), 0 );
    }


    /**
     * Registers custom post type to hold the data of the custom texts
     */
    public function load_cpts() {
        $this->register_type( 'Books', 'books', 'books');
        $this->register_type( 'Movies', 'movies', 'movies');
        $this->register_type( 'Video Sessions', 'video_sessions', 'video_sessions');
    }


    /**
     * Optimizing the creation of post types and allowing for flexibility
     *
     * @param string $text
     * @param string $slug
     * @param string $post_type
     */
    public function register_type( $text, $slug, $post_type ) {

        $labels = array(
            'name'                  => _x( $text, 'General Name', $slug ),
            'singular_name'         => _x( $text, 'Singular Name', $slug ),
            'menu_name'             => __( $text . 's', $slug ),
            'name_admin_bar'        => __( $text, $slug ),
            'archives'              => __( $text . 's', $slug ),
            'parent_item_colon'     => __( $text . ':', $slug ),
            'all_items'             => __( 'All ' . $text, $slug ),
            'add_new_item'          => __( 'Add New ' . $text, $slug ),
            'add_new'               => __( 'Add New ' . $text, $slug ),
            'new_item'              => __( 'New Text for ' . $text, $slug ),
            'edit_item'             => __( 'Edit Text for ' . $text, $slug ),
            'update_item'           => __( 'Update Text for ' . $text, $slug ),
            'view_item'             => __( 'View Text for ' . $text, $slug ),
            'search_items'          => __( 'Search Text for ' . $text, $slug ),
            'not_found'             => __( 'Not found', $slug ),
            'not_found_in_trash'    => __( 'Not found in Trash', $slug ),
            'featured_image'        => __( 'Featured Image', $slug ),
            'set_featured_image'    => __( 'Set featured image', $slug ),
            'remove_featured_image' => __( 'Remove featured image', $slug ),
            'use_featured_image'    => __( 'Use as featured image   ', $slug ),
            'insert_into_item'      => __( 'Insert into Text for ' . $text, $slug ),
            'uploaded_to_this_item' => __( 'Uploaded to this Text for ' . $text, $slug ),
            'items_list'            => __( 'Items list', $slug ),
            'items_list_navigation' => __( 'Items list navigation', $slug ),
            'filter_items_list'     => __( 'Filter items list', $slug ),
        );

        $args = array(
            'label'                 => __( $text, $slug ),
            'description'           => __( $text . 's Description', $slug ),
            'labels'                => $labels,
            'supports'              => array( 'title', 'editor', 'revisions', ),
            'hierarchical'          => false,
            'public'                => true,
            'show_ui'               => true,
            'show_in_menu'          => true,
            'menu_position'         => 20,
            'menu_icon'             => 'dashicons-format-aside',
            'show_in_admin_bar'     => true,
            'show_in_nav_menus'     => true,
            'can_export'            => true,
            'has_archive'           => false,
            'exclude_from_search'   => true,
            'publicly_queryable'    => true,
            'capability_type'       => 'page',
        );

        register_post_type( $post_type, $args );
    }
}

$my_cpts = new MyCPTs();