PHP notices in register_post_type()

[Looimaster]

Code:

<?php
function create_portfolio_post_type() {
    register_post_type( 'portfolio', array(
        'public' => true,
        'exclude_from_search' => true,
        'has_archive' => true,
        'supports' => array( 'title', 'editor', 'author', 'trackbacks', 'custom-fields', 'comments', 'revisions', 'page-attributes' ),
        'rewrite' => array( 'slug' => 'portfolio-items' )
    ) );

    register_taxonomy( 'portfolio_category', 'portfolio', array(
        'hierarchical' => true,
        'show_ui' => true,
        'query_var' => true,
        'rewrite' => true,
    ) );
}
add_action( 'init', 'create_portfolio_post_type' );

Original Pastebin: ​http://pastebin.com/P4Ac7seu

What I get when entering:
1) localhost/portfolio_category/motion/

• nothing found (content-none.php)

2) localhost/portfolio_category/motion/?post_type=portfolio

• found a few posts but there is also an "Undefined Property" notice in general-template.php

3) localhost/?portfolio_category=motion&post_type=portfolio

• found a few posts but there is also an "Undefined Property" notice in general-template.php

4) localhost/?portfolio_category=motion

• nothing found (content-none.php)

5) localhost/portfolio-items/

• works fine

Besides PHP notice I can't access single portfolio_category archives unless I add ?post_type=portfolio to the URL. Should it be this way?

Testing on Twenty Thirteen.

[nofearinc]

Can't reproduce the notice here, I guess it's being caused by other custom code/plugins.

For the "nothing found" section - change your 'exclude_from_search' => true, to false if you want a proper listing.

[channeleaton]

I was able to reproduce using trunk build but without any notices.

As a recap:
1) /portfolio_category/motion/ - nothing found
2) /portfolio_category/motion/?post_type=portfolio - found posts
3) /?portfolio_category=motion&post_type=portfolio - found posts
4) /?portfolio_category=motion - nothing found
5) /portfolio-items/ - works fine

I got the same behavior on items 3&4 using non-pretty permalinks.

[DrewAPicture]

The post_type var defaults to posts, so the only way #1 and #3 would work (short of passing your post type) is if there were posts in that taxonomy. As for the notices, I also can't reproduce. Feel free to reopen if you continue to see these issues.