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I would like to set a site's front page to be a single post from a custom post type. I have been able to alter the request for my front page to a Custom Post Type archive with the following code (originally posted here):

function custom_front_page($wp_query){
    if($wp_query->get('page_id')==get_option('page_on_front')){
        $wp_query->set('post_type','album');
        $wp_query->set('page_id',''); // empty
        // fix conditional functions
        $wp_query->is_page = false;
        $wp_query->is_archive = true;
        $wp_query->is_post_type_archive = true;
    }
}
add_action('pre_get_posts','custom_front_page');

Replacing

$wp_query->is_archive = true;
$wp_query->is_post_type_archive = true; 

with

$wp_query->is_single = true;

calls the single-album.php template as I'd like to, but it still returns ALL the posts in the "Albums" category, instead of only one.

Adding

$wp_query->set('posts_per_page',1);

has no effect.

What should I be doing instead?

Bonus question: is there a good reference somewhere about how to manipulate the query this way?

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3 Answers

up vote 1 down vote accepted

Easiest way to display single post on front page would be:

global $wp_query;
$wp_query = new WP_Query( array( 'p' => 'POST ID HERE' ) );
include( 'single-POSTTYPE.php' );
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I had to do the same for a customer and I have found two resources which helped me:

How do you use a CPT as the default home page?

http://wpquestions.com/question/show/id/2944

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Both good resources, thanks. –  Isaac Lubow Oct 13 '11 at 14:24
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This is the solution that worked for me:

function add_<MYTPE>_to_dropdown( $pages, $r )
{
    if('page_on_front' == $r['name'])
    {
        $args = array(
            'post_type' => '<MYTYPE>'
        );
        $items = get_posts($args);
        $pages = array_merge($pages, $items);
    }

    return $pages;
}
add_filter( 'get_pages', 'add_<MYTPE>_to_dropdown' );

function enable_front_page_<MYTPE>( $query )
{
    if('' == $query->query_vars['post_type'] && 0 != $query->query_vars['page_id'])
        $query->query_vars['post_type'] = array( 'page', '<MYTPE>' );
}
add_action( 'pre_get_posts', 'enable_front_page_<MYTPE>' );

Just replace <MYTYPE> with your custom post type machine name

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