cpt-portrait.php

<?php
/**
 * Plugin Name: Portrait Custom Post Type
 * Description: This plugin adds a Custom Post Type "Portrait" and a custom author role
 * Version: 1.0.0
 * Author: Bernhard Kau
 * Author URI: http://kau-boys.de
 * Plugin URI: https://gist.github.com/2ndkauboy/fbe41513687f5f9f7df98f012f1be691
 * Text Domain: cpt-portrait
 * Domain Path: /languages
 * License: GPLv3
 * License URI: http://www.gnu.org/licenses/gpl-3.0
 */

/**
 * Add a CPT portraits
 */
function cpt_portrait_init() {
	register_post_type( 'portrait', array(
		'labels'            => array(
			'name'                => __( 'Portraits', 'cpt-portrait' ),
			'singular_name'       => __( 'Portrait', 'cpt-portrait' ),
			'all_items'           => __( 'All Portraits', 'cpt-portrait' ),
			'new_item'            => __( 'New Portrait', 'cpt-portrait' ),
			'add_new'             => __( 'Add New', 'cpt-portrait' ),
			'add_new_item'        => __( 'Add New Portrait', 'cpt-portrait' ),
			'edit_item'           => __( 'Edit Portrait', 'cpt-portrait' ),
			'view_item'           => __( 'View Portrait', 'cpt-portrait' ),
			'search_items'        => __( 'Search Portraits', 'cpt-portrait' ),
			'not_found'           => __( 'No Portraits found', 'cpt-portrait' ),
			'not_found_in_trash'  => __( 'No Portraits found in trash', 'cpt-portrait' ),
			'parent_item_colon'   => __( 'Parent Portrait', 'cpt-portrait' ),
			'menu_name'           => __( 'Portraits', 'cpt-portrait' ),
		),
		'public'            => true,
		'hierarchical'      => false,
		'show_ui'           => true,
		'show_in_nav_menus' => true,
		'supports'          => array( 'title', 'editor', 'author' ),
		'taxonomies'        => array( 'category', 'post_tag' ),
		'has_archive'       => true,
		'rewrite'           => true,
		'query_var'         => true,
		'menu_icon'         => 'dashicons-businessman',
		'show_in_rest'      => true,
		'rest_base'         => 'portrait',
		'rest_controller_class' => 'WP_REST_Posts_Controller',
		'map_meta_cap'          => true,
		'capabilities'          => array(
			// Meta capabilities
			'edit_post'              => 'edit_portrait',
			'read_post'              => 'read_portrait',
			'delete_post'            => 'delete_portrait',
			// Primitive capabilities used outside of map_meta_cap():
			'edit_posts'             => 'edit_portraits',
			'edit_others_posts'      => 'edit_others_portraits',
			'publish_posts'          => 'publish_portraits',
			'read_private_posts'     => 'read_private_portraits',
			// Primitive capabilities used within map_meta_cap():
			'read'                   => 'read',
			'delete_posts'           => 'delete_portraits',
			'delete_private_posts'   => 'delete_private_portraits',
			'delete_published_posts' => 'delete_published_portraits',
			'delete_others_posts'    => 'delete_others_portraits',
			'edit_private_posts'     => 'edit_private_portraits',
			'edit_published_posts'   => 'edit_published_portraits',
			'create_posts'           => 'create_portraits',
		),
	) );

}
add_action( 'init', 'cpt_portrait_init' );

/**
 * Sets the messages for the CPT portraits
 *
 * @param array $messages The messages array.
 *
 * @return array
 */
function cpt_portrait_updated_messages( $messages ) {
	global $post;

	$permalink = get_permalink( $post );

	$messages['portrait'] = array(
		0 => '', // Unused. Messages start at index 1.
		1 => sprintf( __('Portrait updated. <a target="_blank" href="%s">View Portrait</a>', 'cpt-portrait'), esc_url( $permalink ) ),
		2 => __('Custom field updated.', 'cpt-portrait'),
		3 => __('Custom field deleted.', 'cpt-portrait'),
		4 => __('Portrait updated.', 'cpt-portrait'),
		/* translators: %s: date and time of the revision */
		5 => isset($_GET['revision']) ? sprintf( __('Portrait restored to revision from %s', 'cpt-portrait'), wp_post_revision_title( (int) $_GET['revision'], false ) ) : false,
		6 => sprintf( __('Portrait published. <a href="%s">View Portrait</a>', 'cpt-portrait'), esc_url( $permalink ) ),
		7 => __('Portrait saved.', 'cpt-portrait'),
		8 => sprintf( __('Portrait submitted. <a target="_blank" href="%s">Preview Portrait</a>', 'cpt-portrait'), esc_url( add_query_arg( 'preview', 'true', $permalink ) ) ),
		9 => sprintf( __('Portrait scheduled for: <strong>%1$s</strong>. <a target="_blank" href="%2$s">Preview Portrait</a>', 'cpt-portrait'),
			// translators: Publish box date format, see http://php.net/date
			date_i18n( __( 'M j, Y @ G:i' ), strtotime( $post->post_date ) ), esc_url( $permalink ) ),
		10 => sprintf( __('Portrait draft updated. <a target="_blank" href="%s">Preview Portrait</a>', 'cpt-portrait'), esc_url( add_query_arg( 'preview', 'true', $permalink ) ) ),
	);

	return $messages;
}
add_filter( 'post_updated_messages', 'cpt_portrait_updated_messages' );

/**
 * Sets the capabilities for the CPT portraits
 */
function cpt_portrait_set_capabilities()  {

	add_role( 'portraiteditor', __( 'Portrait Editor', 'cpt-portrait' ) );

	$portraiteditor = get_role( 'portraiteditor' );
	$portraiteditor->add_cap( 'read' );
	$portraiteditor->add_cap( 'edit_portraits', true );
	$portraiteditor->add_cap( 'edit_others_portraits', false );
	$portraiteditor->add_cap( 'publish_portraits', false );
	$portraiteditor->add_cap( 'read_private_portraits', true );
	$portraiteditor->add_cap( 'delete_portraits', true );
	$portraiteditor->add_cap( 'delete_private_portraits', false );
	$portraiteditor->add_cap( 'delete_published_portraits', false );
	$portraiteditor->add_cap( 'delete_others_portraits', false );
	$portraiteditor->add_cap( 'edit_private_portraits', false );
	$portraiteditor->add_cap( 'edit_published_portraits', true );
	$portraiteditor->add_cap( 'create_portraits', true );

	$administrator = get_role( 'administrator' );
	$administrator->add_cap( 'edit_portraits', true );
	$administrator->add_cap( 'edit_others_portraits', true );
	$administrator->add_cap( 'publish_portraits', true );
	$administrator->add_cap( 'read_private_portraits', true );
	$administrator->add_cap( 'delete_portraits', true );
	$administrator->add_cap( 'delete_private_portraits', true );
	$administrator->add_cap( 'delete_published_portraits', true );
	$administrator->add_cap( 'delete_others_portraits', true );
	$administrator->add_cap( 'edit_private_portraits', true );
	$administrator->add_cap( 'edit_published_portraits', true );
	$administrator->add_cap( 'create_portraits', true );
}
register_activation_hook( __FILE__, 'cpt_portrait_set_capabilities' );

/**
 * Modifies the user query to show administrators and subsribers in the authors drop down
 *
 * @param array $query_args The query arguments for wp_dropdown_users().
 * @param array $r          The default arguments for wp_dropdown_users().
 *
 * @return mixed
 */
function cpt_portrait_wp_dropdown_users_args( $query_args, $r ) {
	if ( 'portrait' === get_current_screen()->post_type ) {
		$query_args['role__in'] = array( 'administrator', 'portraiteditor' );
		$query_args['who'] = ''; // This will reset the need of the user to be a post author
	}

	return $query_args;
}
add_filter( 'wp_dropdown_users_args', 'cpt_portrait_wp_dropdown_users_args', 10, 2 );