WordPress Custom Post Type

wordpress-custom-post-type-example.php

<?
	/*
	Plugin Name: My Custom Post Type
	Plugin URI: http://wp.smashingmagazine.com/2012/11/08/complete-guide-custom-post-types/
	Version: 1.0
	Author: Steven Soule
	Author URI: http://www.stevensoule.com
	*/

	/*function my_custom_post_product() {
		$args = array();
		register_post_type( 'product', $args );
	}
	add_action( 'init', 'my_custom_post_product' );*/

	function my_custom_post_product() {
		$labels = array(
			'name'               => _x( 'Products', 'post type general name' ),
			'singular_name'      => _x( 'Product', 'post type singular name' ),
			'add_new'            => _x( 'Add New', 'book' ),
			'add_new_item'       => __( 'Add New Product' ),
			'edit_item'          => __( 'Edit Product' ),
			'new_item'           => __( 'New Product' ),
			'all_items'          => __( 'All Products' ),
			'view_item'          => __( 'View Product' ),
			'search_items'       => __( 'Search Products' ),
			'not_found'          => __( 'No products found' ),
			'not_found_in_trash' => __( 'No products found in the Trash' ),
			'parent_item_colon'  => '',
			'menu_name'          => 'Products'
		);
		$args = array(
			'labels'        => $labels,
			'description'   => 'Holds our products and product specific data',
			'public'        => true,
			'menu_position' => 5,
			'supports'      => array( 'title', 'editor', 'thumbnail', 'excerpt', 'comments' ),
			'has_archive'   => true,
		);
		register_post_type( 'product', $args );
	}
	add_action( 'init', 'my_custom_post_product' );

	function my_updated_messages( $messages ) {
		global $post, $post_ID;
		$messages['product'] = array(
			0 => '',
			1 => sprintf( __('Product updated. <a href="%s">View product</a>'), esc_url( get_permalink($post_ID) ) ),
			2 => __('Custom field updated.'),
			3 => __('Custom field deleted.'),
			4 => __('Product updated.'),
			5 => isset($_GET['revision']) ? sprintf( __('Product restored to revision from %s'), wp_post_revision_title( (int) $_GET['revision'], false ) ) : false,
			6 => sprintf( __('Product published. <a href="%s">View product</a>'), esc_url( get_permalink($post_ID) ) ),
			7 => __('Product saved.'),
			8 => sprintf( __('Product submitted. <a target="_blank" href="%s">Preview product</a>'), esc_url( add_query_arg( 'preview', 'true', get_permalink($post_ID) ) ) ),
			9 => sprintf( __('Product scheduled for: <strong>%1$s</strong>. <a target="_blank" href="%2$s">Preview product</a>'), date_i18n( __( 'M j, Y @ G:i' ), strtotime( $post->post_date ) ), esc_url( get_permalink($post_ID) ) ),
			10 => sprintf( __('Product draft updated. <a target="_blank" href="%s">Preview product</a>'), esc_url( add_query_arg( 'preview', 'true', get_permalink($post_ID) ) ) ),
		);
		return $messages;
	}
	add_filter( 'post_updated_messages', 'my_updated_messages' );

	function my_contextual_help( $contextual_help, $screen_id, $screen ) {
		if ( 'product' == $screen->id ) {

			$contextual_help = '<h2>Products</h2>
			<p>Products show the details of the items that we sell on the website. You can see a list of them on this page in reverse chronological order - the latest one we added is first.</p>
			<p>You can view/edit the details of each product by clicking on its name, or you can perform bulk actions using the dropdown menu and selecting multiple items.</p>';

		} elseif ( 'edit-product' == $screen->id ) {

			$contextual_help = '<h2>Editing products</h2>
			<p>This page allows you to view/modify product details. Please make sure to fill out the available boxes with the appropriate details (product image, price, brand) and <strong>not</strong> add these details to the product description.</p>';

		}
		return $contextual_help;
	}
	add_action( 'contextual_help', 'my_contextual_help', 10, 3 );

	/*function my_taxonomies_product() {
		$args = array();
		register_taxonomy( 'product_category', 'product' $args );
	}

	add_action( 'init', 'my_taxonomies_product', 0 );*/

	function my_taxonomies_product() {
		$labels = array(
			'name'              => _x( 'Product Categories', 'taxonomy general name' ),
			'singular_name'     => _x( 'Product Category', 'taxonomy singular name' ),
			'search_items'      => __( 'Search Product Categories' ),
			'all_items'         => __( 'All Product Categories' ),
			'parent_item'       => __( 'Parent Product Category' ),
			'parent_item_colon' => __( 'Parent Product Category:' ),
			'edit_item'         => __( 'Edit Product Category' ),
			'update_item'       => __( 'Update Product Category' ),
			'add_new_item'      => __( 'Add New Product Category' ),
			'new_item_name'     => __( 'New Product Category' ),
			'menu_name'         => __( 'Product Categories' ),
		);
		$args = array(
			'labels' => $labels,
			'hierarchical' => true,
		);
		register_taxonomy( 'product_category', 'product', $args );
	}
	add_action( 'init', 'my_taxonomies_product', 0 );

	add_action( 'add_meta_boxes', 'product_price_box' );
	function product_price_box() {
	    add_meta_box(
	        'product_price_box',
	        __( 'Product Price', 'myplugin_textdomain' ),
	        'product_price_box_content',
	        'product',
	        'side',
	        'high'
	    );
	}

	function product_price_box_content( $post ) {
		wp_nonce_field( plugin_basename( __FILE__ ), 'product_price_box_content_nonce' );
		echo '<label for="product_price"></label>';
		echo '<input type="text" id="product_price" name="product_price" placeholder="enter a price" />';
	}

	add_action( 'save_post', 'product_price_box_save' );
	function product_price_box_save( $post_id ) {

		if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
		return;

		if ( !wp_verify_nonce( $_POST['product_price_box_content_nonce'], plugin_basename( __FILE__ ) ) )
		return;

		if ( 'page' == $_POST['post_type'] ) {
			if ( !current_user_can( 'edit_page', $post_id ) )
			return;
		} else {
			if ( !current_user_can( 'edit_post', $post_id ) )
			return;
		}
		$product_price = $_POST['product_price'];
		update_post_meta( $post_id, 'product_price', $product_price );
	}
?>