ibrokemywp

/**
 * Check before sorting your custom post type admin lists so you don't
 * override other changes.
 */
add_action( 'pre_get_posts', array( $this, 'admin_order_posts' ) );
public function admin_order_posts( $query ) {

	if( ( is_admin() && $query->is_admin ) && $query->get( 'post_type' ) == 'my_custom_post_type' ) {

		// This prevents other orderby options from breaking.

ibrokemywp

/**
 * Don't sort your custom post type admin lists this way because it will
 * override other sorting being executed on this list.
 */
add_action( 'pre_get_posts', array( $this, 'admin_order_posts' ) );
public function admin_order_posts( $query ) {

	if( ( is_admin() && $query->is_admin ) && $query->get( 'post_type' ) == 'my_custom_post_type' ) {
		$query->set( 'orderby', 'menu_order' );
		$query->set( 'order', 'ASC' );

ibrokemywp

/**
 * Load a .mo file for the old textdomain if one exists
 *
 * If you have to change your textdomain to comply with upcoming
 * plugin and theme repository standards, this function will check to
 * see if an old translation file exists and load it if it does, so
 * that people don't lose their translations.
 *
 * h/t: https://github.com/10up/grunt-wp-plugin/issues/21#issuecomment-62003284
 */

ibrokemywp

/**
 * I'm going to add some content from one post to
 * the content of another post. Yay for me.
 */
add_filter( 'the_content', 'my_little_content_addition' );
function my_little_content_addition( $content ) {

	if ( is_the_right_content() ) {

		/**

ibrokemywp

/**
 * Let's say you're parsing query args in the admin so 
 * that you can apply some custom filters for your
 * custom post type list table.
 */
add_filter( 'parse_query', 'filter_my_post_type' );
function filter_my_post_type( $query ) {

	/**
	 * Oh good, you've put in that is_admin() check