Create a custom post type

1. Make the Tea Theme Options working

As we said before:

<?php

use crewstyle\TeaThemeOptions\TeaThemeOptions;

//Include composer autoload
require_once __DIR__.'/vendor/autoload.php';

//Instanciate a new TeaThemeOptions
$tea = new TeaThemeOptions();

2. Define what you want

Specify your wanted components:

<?php

//Build post type
$tea_configs = array(
  'slug' => 'project',

  'labels' => array(
    'name' => __('Projects'),
    'singular_name' => __('Project'),
  ),

  'capability_type' => 'post',
  'has_archive' => true,
  'hierarchical' => false,
  'menu_icon' => 'dashicons-portfolio',
  'menu_position' => 5,
  'public' => true,
  'query_var' => true,
  'show_ui' => true,

  'supports' => array('title', 'editor', 'excerpt', 'thumbnail', 'revision', 'comments'),
  'taxonomies' => array(),
);
//Build contents
$tea_contents = array(
  array(
    'type' => 'textarea',
    'id' => 'source',
    'title' => 'Video URL',
    'placeholder' => 'http://...',
    'description' => 'Enter here your Video URL.'
  )
);

//Add post type to WP
$tea->addPostType($tea_configs, $tea_contents);
//Delete variables because we love our server!
unset($tea_configs, $tea_contents);

If you need to upgrade post or page post types, you can do it in the backend panel only:

<?php

//Check if we are in the admin panel
if (is_admin()) {
  //Build post type
  $tea_configs = array(
    'title' => 'post',
    'slug' => 'post' //or 'page'
  );

  //Build contents
  $tea_contents = array(
    array(
      'type' => 'select',
      'id' => 'select_box_id',
      'title' => 'A selectbox',
      'default' => 'great',
      'options' => array(
        'lovethat' => 'I love that!',
        'great' => 'GREAT',
        'toobad' => 'Too baaaaaaaaaaad!',
      )
    )
  );

  //Add post type to WP
  $tea->addPostType($tea_configs, $tea_contents);
  //Delete variables because we love our server!
  unset($tea_configs, $tea_contents);
}

3. Build the CPT

<?php

//Build post types
$tea->buildPostTypes();

4. All in one

Here is a complete snapshot of what you have to do. Remember to make all these modifications in your functions.php theme file.

<?php

use crewstyle\TeaThemeOptions\TeaThemeOptions;

//Include composer autoload
require_once __DIR__.'/vendor/autoload.php';

//Instanciate a new TeaThemeOptions
$tea = new TeaThemeOptions();

//Build post type
$tea_configs = array(
  'slug' => 'project',

  'labels' => array(
    'name' => __('Projects'),
    'singular_name' => __('Project'),
  ),

  'capability_type' => 'post',
  'has_archive' => true,
  'hierarchical' => false,
  'menu_icon' => 'dashicons-portfolio',
  'menu_position' => 5,
  'public' => true,
  'query_var' => true,
  'show_ui' => true,

  'supports' => array('title', 'editor', 'excerpt', 'thumbnail', 'revision', 'comments'),
  'taxonomies' => array(),
);
//Build contents
$tea_contents = array(
  array(
    'type' => 'textarea',
    'id' => 'source',
    'title' => 'Video URL',
    'placeholder' => 'http://...',
    'description' => 'Enter here your Video URL.'
  )
);

//Add post type to WP
$tea->addPostType($tea_configs, $tea_contents);
//Delete variables because we love our server!
unset($tea_configs, $tea_contents);

//Check if we are in the admin panel
if (is_admin()) {
  //Build post type
  $tea_configs = array(
    'title' => 'post',
    'slug' => 'post' //or 'page'
  );

  //Build contents
  $tea_contents = array(
    array(
      'type' => 'select',
      'id' => 'select_box_id',
      'title' => 'A selectbox',
      'default' => 'great',
      'options' => array(
        'lovethat' => 'I love that!',
        'great' => 'GREAT',
        'toobad' => 'Too baaaaaaaaaaad!',
      )
    )
  );

  //Add post type to WP
  $tea->addPostType($tea_configs, $tea_contents);
  //Delete variables because we love our server!
  unset($tea_configs, $tea_contents);
}

//Build post types
$tea->buildPostTypes();

Pay attention: do not hesitate to make conditions on what you need in your backend panel versus what you need in your frontend website.