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WordPress 4.4 introduced the ability to display date archives by appending /?post_type=custom_post_type to the end of the date url. i.e. localhost/2016/02/?post_type=news.

I had assumed I could do: if( is_post_type_archive('news) && is_date())...

But from what I can discern:

  • is_date() will only detect if the page is displaying a year/month/day archive & is_date() applies to all CPT date archives as well

  • is_archive() applies to all archive pages

  • is_post_type_archive('CPT') will only apply to the archive page and filters out date archives

I'm trying to output a menu on the news date archive pages to display separately from the blog date archive pages.

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There is no logical explanation why if( is_post_type_archive('news) && is_date()) should fail and not work in your situation.

  • is_date() return true on all date archives

  • is_post_type_archive( 'news' ) will return true on post type archives

When you visit localhost/2016/02/?post_type=news, both of those ring true, and they will only ring true on that specific URL

If it it fails, you have something breaking your main query, maybe a bad pre_get_posts action or you are using query_posts somewhere on the page which will break the main query object. You should do var_dump( $wp_query ) and inspect the main query object. Specially look at $query property

  • You are correct. I just re-ran this through a fresh install with the following: <?php if(is_date() && is_post_type_archive('news')) { echo 'is_date + is_post_type_archive(news)'; } elseif( is_date() && is_post_type_archive('posts')) { echo ' is_date + is_post_type_archive(posts)'; } elseif( is_date() && is_archive()) { echo ' is_date + is_archive'; } ?> and it produced: localhost/2016/ : is_date + is_archive localhost/2016/?post_type=news : is_date + is_post_type_archive(news) localhost/2016/?post_type=post : is_date + is_archive – ZachTRice Feb 26 '16 at 5:29
  • Glad it worked. Enjoy ;-) – Pieter Goosen Feb 26 '16 at 5:30

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