gistfile1.txt

<?php
/**
 * Plugin Name: IRIS - Testimonial custom post type
 * Description: Set all testimonials as custom posts.
 * Version: 1.0.0
 * Author: Alex Dimitrov
 * Author URI: http://www.xavortm.com
 * License: A short license name. Example: GPL2
 */

if ( ! class_exists('Iris_Testimonials') ) {

	class Iris_Testimonials {

		/**
		 * Construct - run all functions needed
		 */
		function __construct()	{

			// Register the post type
			$this->register_post_type();
			$this->add_actions();

			add_image_size( 'testimonial_thumbnail', 64, 64, true );
		}

		function register_post_type() {
			$labels = array(
				'name' => 'Testimonials',
				'menu_name' => 'Testimonials',
				'name_admin_bar' => 'Testimonials',
				'singular_name' => 'Testimonial',
				'add_new' => 'New Testimonial',
				'add_new_item' => 'New Testimonial',
				'new_item' => 'New Testimonial',
				'edit_item' => 'Edit Testimonial',
				'view_item' => 'View Testimonial',
				'search_items' => 'Search Testimonials',
				'not_found' => 'Not found',
				'not_found_in_trash' => 'Not found in trash'
			);

			$args = array(
				'labels' => $labels,
				'description' => 'Custom testimonials to list on the homepage',
				'public' => true,
				'menu_position' => 5,
				'rewrite' => false,
				'supports'      => array( 'editor', 'thumbnail' )
			);

			register_post_type( 'testimonial', $args );
		}

		/**
		 * Basicly hook the plugin to WordPress
		 */
		function add_actions() {
			add_action( 'init', array( $this, 'register_post_type' ) );

			add_action( 'add_meta_boxes', array( $this, 'add_meta_box' ) );
			add_action( 'save_post', array( $this, 'save' ) );
		}

		/**
		 * Metaboxes for the needed content.
		 * @param [type] $post_type [description]
		 */
		public function add_meta_box( $post_type ) {
			$post_types = array('testimonial');     //limit meta box to certain post types
			if ( in_array( $post_type, $post_types )) {
				add_meta_box(
					'some_meta_box_name'
					,__( 'Set testimonial data', 'iris' )
					,array( $this, 'render_meta_box_content' )
					,$post_type
					,'side'
					,'default'
				);
			}
		}

		/**
		 * Save the meta when the post is saved.
		 *
		 * @param int $post_id The ID of the post being saved.
		 */
		public function save( $post_id ) {

			/*
			 * We need to verify this came from the our screen and with proper authorization,
			 * because save_post can be triggered at other times.
			 */

			// Check if our nonce is set.
			if ( ! isset( $_POST['testimonial_box_nonce'] ) )
				return $post_id;

			$nonce = $_POST['testimonial_box_nonce'];

			// Verify that the nonce is valid.
			if ( ! wp_verify_nonce( $nonce, 'testimonial_box' ) )
				return $post_id;

			// If this is an autosave, our form has not been submitted,
					//     so we don't want to do anything.
			if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
				return $post_id;

			// Check the user's permissions.
			if ( 'page' == $_POST['post_type'] ) {

				if ( ! current_user_can( 'edit_page', $post_id ) )
					return $post_id;

			} else {

				if ( ! current_user_can( 'edit_post', $post_id ) )
					return $post_id;
			}

			/* OK, its safe for us to save the data now. */

			// Sanitize the user input.
			$author = sanitize_text_field( $_POST['input_author'] );
			$position = sanitize_text_field( $_POST['input_position'] );

			// Update the meta field.
			update_post_meta( $post_id, '_author', $author );
			update_post_meta( $post_id, '_position', $position );
		}


		/**
		 * Render Meta Box content.
		 *
		 * @param WP_Post $post The post object.
		 */
		public function render_meta_box_content( $post ) {

			// Add an nonce field so we can check for it later.
			wp_nonce_field( 'testimonial_box', 'testimonial_box_nonce' );

			// Use get_post_meta to retrieve an existing value from the database.
			$author = get_post_meta( $post->ID, '_author', true );
			$position = get_post_meta( $post->ID, '_position', true );

			// Display the form, using the current value.
			echo '<p>';
			echo '<label for="input_author">';
			_e( 'Author', 'iris' );
			echo '</label> ';
			echo '<input type="text" id="input_author" name="input_author" class="widefat"';
			echo ' value="' . esc_attr( $author ) . '" size="25"';
			echo '</p>';

			echo '<p>';
			echo '<label for="input_position">';
			_e( 'Position', 'iris' );
			echo '</label> ';
			echo '<input type="text" id="input_position" name="input_position" class="widefat"';
			echo ' value="' . esc_attr( $position ) . '" size="25" />';
			echo '</p>';
		}

	} // end Iris_Testimonials class


}

$obj = new Iris_Testimonials();