在归档中显示页面和帖子

Question

I have many categories, but for clearity I will do an example with only two:

• News that contains many posts
• Products that contains many pages (I've added this feature in functions.php)

I want that archive.php displays:

• the posts when the user choose the category News
• the pages when the user choose the category Products

At the moment Wordpress by deafult shows only posts and not pages.

I know that this is possible by adding a simple function in functions.php but I can't find it.

EDIT: For another project with custom post type "Books" I used this code

function query_post_type($query) {
    $post_types = get_post_types();

    if ( is_category() || is_tag()) {

        $post_type = get_query_var('books');

        if ( $post_type ) {
            $post_type = $post_type;
        } else {
            $post_type = $post_types;
        }

        $query->set( 'post_type', $post_type ); 


        return $query;
    }
}
add_filter('pre_get_posts', 'query_post_type');

Is there something like that for my case?

Answer 1

You can query for solely pages in the WP Query.

PHP:

$args = array(
  'post_type' => 'page'
);

$query = new WP_Query( $args );

This will return all pages in your database, and zero posts. Vice versa, you could have 'post_type' => 'post' to query all posts, but that's the default behaviour of the WP Query.

For more documentation on this, check out the WP Query reference in the Wordpress Codex.