Custom Post Type Permalink Returns 404 Error

[imageac]

Since, I upgraded Wordpress version from 3.3.2 to 3.4.1, I discovered permalink returns 404 error on (1) Paged categories, and (2) Custom type posts.

The paged categories has been fixed implementing ticket:21209, but custom type posts return 404 error when it called.

I am using following code to register custom type post 'products'.

function products_register() {

 

	$labels = array(
		'name' => _x('Products', 'post type general name'),
		'singular_name' => _x('Product', 'post type singular name'),
		'add_new' => _x('Add New', 'product item'),
		'add_new_item' => __('Add New Product'),
		'edit_item' => __('Edit Product'),
		'new_item' => __('New Product'),
		'view_item' => __('View Product'),
		'search_items' => __('Search Product'),
		'not_found' =>  __('Nothing found'),
		'not_found_in_trash' => __('Nothing found in Trash'),
		'parent_item_colon' => ''
	);

 

	$args = array(
		'labels' => $labels,
		'public' => true,
		'publicly_queryable' => true,
		'show_ui' => true,
		'query_var' => true,
// working perfect in 3.3.2		'rewrite' => true,
// also tried this in 3.4.1		'rewrite' => array('slug' => 'products','with_front' => FALSE),
		'rewrite' => array('slug' => 'products'),
		'capability_type' => 'post',
		'hierarchical' => false,
		'can_export' => true,
		'menu_position' => 5,
		 'taxonomies' => array('category'), 
		'supports' => array('title','editor','thumbnail', 'custom-fields')
	  ); 

 

	register_post_type( 'products' , $args );

}



//Registering Post-Type Products for Affiliate products only

add_action('init', 'products_register');





function add_default_boxes() {

    register_taxonomy_for_object_type('category', 'products');

}

//Registering Taxonomy for Products post-type

add_action('init', 'add_default_boxes');

[SergeyBiryukov]

I couldn't reproduce the 404 error using your example on a clean install with Twenty Twelve.

My steps:

1. Added your code to the theme's functions.php file.
2. Flushed rewrite rules by visiting the Permalink Settings screen.
3. Created a new product (Product 1).
4. Visited /products/product-1/. The post is properly displayed.

[imageac]

After upgrading Wordpress to 3.4.1, I faced 404 error with 'paged' categories, but it was soon resolved with assistance available in ticket:21209. I added following code to the theme's functions.php file.

function hc_init() {
global $wp_rewrite;

//add rewrite rule.
add_rewrite_rule("author/([^/]+)/page/?([0-9]{1,})/?$",'index.php?author_name=$matches[1]&paged=$matches[2]','top');


add_rewrite_rule("(.+?)/page/?([0-9]{1,})/?$",'index.php?category_name=$matches[1]&paged=$matches[2]','top');

  
$wp_rewrite->flush_rules(false);
}

add_action('init','hc_init');

As I explained earlier that my above code was super fit, and had no problem related to permalink and/or custom post type before upgrade to 3.4.1.

My steps:

1. Yes, I added code mentioned-above to the theme's functions.php file.
2. Yes, flushed rewrite rules by visiting the Permalink Settings screen.
3. Yes, I created a new product (Product 1).
4. But, when I visited /products/product-1/. The post returns 404 error as tested it.

Please help me to fix 404 error with custom post type.

[SergeyBiryukov]

Replying to imageac:

$wp_rewrite->flush_rules(false);

Note that $wp_rewrite->flush_rules() call is only needed once after a new custom post type is added (as described in the Codex articles on ​flush_rules and ​WP_Rewrite), not on each page load.

Please help me to fix 404 error with custom post type.

Have you tried disabling all plugins and switching to a default theme (Twenty Eleven on 3.4.1), then flushing rewrite rules once again?

Until the exact bug is identified and confirmed, I'd suggest trying the support forums to get help: ​http://wordpress.org/support/

[wonderboymusic]

You hook seems incorrect to me - when adding custom rewrite rules, it is safer to use this action or filter:

do_action_ref_array('generate_rewrite_rules', array(&$this));
$this->rules = apply_filters('rewrite_rules_array', $this->rules);

Here's a great example:

​http://bbpress.trac.wordpress.org/browser/branches/2.1/bbpress.php#L830

[johnbillion]

No feedback in two years.