Add additional field to custom post_type

Question

I am trying to add another field (subtitle) to my already created and existing custom post_type: team (code from functions.php in my *child*theme)

<?php
/**
 * Custom Post type register framework
 */
include(get_stylesheet_directory(). '/inc/acpt/init.php');
add_action('init', 'makethem');
function makethem() {
    $args = array(
        'supports' => array( 'title', 'editor', 'page-attributes', 'thumbnail', 'excerpt'  ),
        'hierarchical' => true,
    );

    $team = new post_type('team','team', false,  $args );

}

/**
 * Initialize the metabox class
 */
add_action( 'init', 'be_initialize_team_meta_boxes', 9999 );
function be_initialize_team_meta_boxes() {
    if ( !class_exists( 'team_Meta_Box' ) ) {
        require_once( get_stylesheet_directory(). '/inc/metaboxes/fisio-metaboxes.php' );
        require_once( get_stylesheet_directory(). '/inc/metaboxes/init.php' );

    }
}
?>

And this is the code in fisio-metaboxes.php

    <?php
/**
 * Include and setup custom metaboxes and fields.
 *
 * @category YourThemeOrPlugin
 * @package  Metaboxes
 * @license  http://www.opensource.org/licenses/gpl-license.php GPL v2.0 (or later)
 * @link     https://github.com/jaredatch/Custom-Metaboxes-and-Fields-for-WordPress
 */

/**
 * Define the metabox and field configurations.
 *
 * @param  array $meta_boxes
 * @return array
 */
 add_filter( 'team_Meta_Box', 'team_sample_metaboxes' );
function team_sample_metaboxes( array $meta_boxes ) {
    $prefix = '_team_';
    $meta_boxes[] = array(
            'id'         => 'team_details',
            'title'      => 'Team details',
            'post_type'      => 'team', // Post type    
            'context'    => 'side',
            'priority'   => 'high',
            'show_names' => true, // Show field names on the left
            'fields'     => array(
                array(
                    'name' => 'Subtitle',
                    //'desc' => '',
                    'id' => $prefix . 'subtitle',
                    'type' => 'text'
                ),
            ),
        );
    return $meta_boxes;
}

add_action( 'init', 'team_initialize_team_meta_boxes', 9999 );
/**
 * Initialize the metabox class.
 */
function team_initialize_team_meta_boxes() {

    if ( ! class_exists( 'team_Meta_Box' ) )
        require_once get_stylesheet_directory(). '/inc/metaboxes/init.php';

}

The problem is that when in the wp-admin i whant to add a new team's post_type post, the post_type doesn't have the subtitle field

What am I missing?

Edit: In case you Didn't notice I've never done this before. I am following this steps with no succeed..

-EDIT-

I am also trying like this:

$meta_boxes[] = array(
            'id'         => 'team_details',
            'title'      => 'Team details',
            'pages'      => 'team', // Post type    
            'context'    => 'normal',
            'priority'   => 'high',
            'show_names' => true, // Show field names on the left
            'fields'     => array(
                array(
                    'name' => 'Subtitle',
                    'desc' => 'This is the subtitle',
                    'id' => $prefix . 'subtitle',
                    'type' => 'text'
                ),
            ),
        );

-EDIT-

Also tried passing the post_type as an array

'pages'      => array('team'), // Post type 

Answer 1

In your code, you are using:

add_filter( 'team_Meta_Box', 'team_sample_metaboxes' );

On the site you linked to, they are using:

add_filter( 'cmb_meta_boxes', 'wpb_sample_metaboxes' );

So my question is: did you change all instances of "cmb" to "team" in the init.php file?

If you did, then the correct filter to use should be:

add_filter( 'team_meta_boxes', 'team_sample_metaboxes' );

Edit: If you did NOT change init.php file at all (and I don't really see why you would change it), then you shouldn't be changing "cmb" to "team" in your code in the following instances:

1)

add_filter( 'cmb_meta_boxes', 'team_sample_metaboxes' );

2)

if ( ! class_exists( 'cmb_Meta_Box' ) )

Answer 2

I recently released a plugin called SuperCPT which makes this process very easy for a developer. That said, it sounds like you're not really a developer, and you might benefit from having a UI. In that case, you might check out the plugin More Fields which allows you to create meta boxes and fields without writing code.

If you end up using SuperCPT, you can replace all your code (custom post type declaration and meta box code) with:

function wpse_88959_add_meta_boxes() {
    if ( ! class_exists( 'Super_Custom_Post_Type' ) )
        return;

    $teams = new Super_Custom_Post_Type( 'team', 'Team', 'Teams', array( 'hierarchical' => true ) );
    $teams->add_meta_box( array(
        'id' => 'team_details',
        'context' => 'normal',
        'priority' => 'high',
        'fields' => array(
            'subtitle' => array()
        )
    ) );
}
add_action( 'after_setup_theme', 'wpse_88959_add_meta_boxes' );

Answer 3

Try changing the pages to an array like so:

'pages' => array('page'), // post type

Answer 4

I would recommend you use this great tool to add meta fields. It has many features and was build by respectable WP coders. Everything works right out the box.

Just read the instructions and also copy the example functions to your functions file.