README

Helper class to quickly manage PostType and Taxonomy declarations

Features

• Easily add new Post Types or update existing ones
• Easily add new Taxonomies
• Easily link Post Types to Taxonomies & vice versa
• Easily add new columns to the admin and manage them ( populate, sort, reorder )
• Easily add admin taxonomy filters

Installation

Install with composer

Run the following in your terminal to install the package with composer

composer require gturpin/post-type-handler

Requires PHP 7.4 or higher.

The package use the autoloader, so don't forget to register the autoloader. If you don't know how see the basic example below.

Basic Usage

Below is a basic example of setting up a simple PostType.

// don't forget to import your autoloader
require_once __DIR__ . '/vendor/autoload.php';

use PostTypeHandler\PostType;

$post_type_handler = new PostType( 'Book' );
$post_type_handler->register();

You can set the dashicon like that :

$post_type_handler->set_icon( 'dashicons-book' );
// Just the dashicon name also works
$post_type_handler->set_icon( 'book' );

You can add custom $options and $labels to the PostType declaration.

$labels = [
	'add_new'   => __( 'my add_new', 'context' ),
	'all_items' => __( 'my all_items', 'context' ),
];

$options = [
	'public'    => true,
	'menu_icon' => 'dashicons-admin-post',
	'rewrite'   => [
		'slug' => 'my-post-type',
	],
];

$post_type_handler = new PostType( 'Book', $options, $labels );
$post_type_handler->register();

You can also set the taxonomies for the PostType if they are previously registered.

$post_type_handler = new PostType( 'Book' );

// add multiple taxonomies
$post_type_handler->set_taxonomies( [ 'custom-taxonomy', 'post_tag' ] );

// or add a single taxonomy
$post_type_handler->set_taxonomies( 'custom-taxonomy' );

$post_type_handler->register();

Otherwise you can register a new Taxonomy and then even add it to the PostType declaration.

use PostTypeHandler\Taxonomy;
// Register the Taxonomy
$taxonomy_handler = new Taxonomy( 'custom-taxonomy' );
$taxonomy_handler->register();

// Add it to the PostType in PostType declaration
$post_type_handler = new PostType( 'Book' );
$post_type_handler->set_taxonomies( 'custom-taxonomy' );
$post_type_handler->register();

Or you can set the taxonomy to a Post Type that is already registered.

$taxonomy_handler = new Taxonomy( 'custom-taxonomy' );
// This is a post type slug and must be lower case!
// Also works with an array and/or variable: [ 'book', $post_type_handler ]
$taxonomy_handler->set_post_types( 'book' );
$taxonomy_handler->register();

You can give the Taxonomy object itself to the PostType.

$taxonomy_handler = new Taxonomy( 'custom-taxonomy' );
$taxonomy_handler->register();

$post_type_handler = new PostType( 'Book' );
// Also works with an array : [ 'post_tag', $taxonomy_handler ]
$post_type_handler->set_taxonomies( $taxonomy_handler );
$post_type_handler->register();

You can do the same with an existing CPT, like Post :

$posts = new PostType( 'Post' );
$posts->set_taxonomies( 'custom-taxonomy' );
$posts->register();

You can also remove a taxonomy from a Post Type.

$posts = new PostType( 'Post' );
$posts->remove_taxonomy( 'post_tag' );
$posts->register();

Manage Post Types columns

I will explain some examples of how to manage the columns for a Post Type.

1. Register the Post Type.
2. Manipulate the columns.
3. Save the changes by re-registering the Post Type.

Add a new column

To add new columns to a Post Type you can do the following

// Call the columns function to get access to the column manager and add a new column
$post_type_handler->columns()->add( [
	'custom-slug' => __( 'Custom label', 'context' ),
	'year'        => __( 'Year', 'context' ),
] );

// You can also pass only one slug and label
$post_type_handler->columns()->add( 'custom-slug', 'Custom label' );

Hide a column

To hide a column you can do the following

// Call the columns function to get access to the column manager and hide a built-in column or a custom one
$post_type_handler->columns()->hide( [
	'custom-slug',
	'date'
] );

// You can also hide only one column
$post_type_handler->columns()->hide( 'year' );

Set all columns

You can set all columns at once By doing this you must take a look at the Manage columns hook to prevent unwanted columns

// Call the columns function to get access to the column manager and set all columns
$post_type_handler->columns()->set( [
	'custom-slug' => __( 'Custom label', 'context' ),
	'year'        => __( 'Year', 'context' ),
] );

Populate a column

To populate a column you can do the following

• You can only populate one column at once
• You must display the content and not return it
• You can't use this to populate a built-in column

// Call the columns function to get access to the column manager and populate a column
$post_type_handler->columns()->populate( 'custom-slug', function( $column, $post_id ) {
	echo get_the_title( $post_id );
} );
$post_type_handler->columns()->populate( 'year', function( $column, $post_id ) {
	echo get_the_date( 'Y', $post_id );
} );

You can also add new columns to existing and built in post types

$posts = new PostType( 'Post' );
$posts->columns()->add( 'id' );
$posts->columns()->populate( 'id', function( $column, $post_id ) {
	echo $post_id;
} );
$posts->register();

Make a column sortable

To make a column sortable you can do the following

• You must make the column slug in key and value of the array
• The value must be the meta key to sort using
• Don't forget to populate the column before you make it sortable!

// Call the columns function to get access to the column manager and make a column sortable
$post_type_handler->columns()->sortable( [
	'rating' => 'rating',
	// You can add true to make the sort by numeric order
	// or false to make it by alphabetical order which is the default
	'year'   => [ 'year', true ],
] );

Order the columns

You may want to order the columns, even the native ones, do the following

• Set the final position, starting from 0
• Avoid duplicate and negative positions in your array!

$post_type_handler->columns()->order( [
	// Reorder the native columns
	'title'       => 5,
	// Use large numbers to be sure that the column will be at the end
	'cb'          => 15,
	'custom-slug' => 1,
	'rating'      => 3,
	'author'      => 8,
] );

Adding taxonomy filters to the edit screen

To add taxonomy filters to the edit screen you can do the following

• Add a list of taxonomies slugs
• The order is important because the filters will be displayed that order!

$post_type_handler->set_taxonomy_filters( [
	'custom-taxonomy',
] );

Hooks

TODOS

• Can also add taxonomy by sending the object itself ( by the object itself, maybe with a __tostring method )
• Adding a way to manage Columns
  • Hide columns and defaults for each post type
  • Adding new columns to the admin screen
  • Set columns order
  • Set the entire columns array
  • Populate any column with a custom function
  • Can sort each columns with their values ( numerically / alphabetically )
• Adding a function to easily add icon without using the $options array
• Adding a way to manage the Filters on screen admin
  • Set an array to order them and keep an order
• Add a class to manage the taxonomies
  • Adding new Taxonomies
  • Can work on existing taxonomies ( post_tag & category )
  • Can be registered on a post type directly ( by the slug or the object itself, maybe with a __tostring method )
• Can work on existing post types ( update options and labels )
• Add the @link/author/license to the main class
• Same columns but for the taxonomies
• Can delete row actions ( edit, view, trash, delete ) from the admin screen ( 'post_row_actions' )
• Check if we can do the same for adding ones
• Check to add/remove bulk edit actions
• Check if we can add/update/remove the list above the bulk actions ( all / published etc ... )