Query for custom post type?

I have installed the Custom Post Type UI plugin. After activation of this plugin I have created a custom post type called portfolio. Now I want to use this on the portfolio page in the front-end. How do I fetch all post that are of custom post type portfolio?

Answers:

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Method 1

query_posts( array( 'post_type' => array('post', 'portfolio') ) );

which shows both normal posts and posts inside portfolio type

or

query_posts('post_type=portfolio');

for only portfolio.

Use as normal WP Query – read the Codex: http://codex.wordpress.org/Function_Reference/query_posts#Usage and http://codex.wordpress.org/Function_Reference/query_posts#Post_.26_Page_Parameters

<?php 
    query_posts(array( 
        'post_type' => 'portfolio',
        'showposts' => 10 
    ) );  
?>
<?php while (have_posts()) : the_post(); ?>
        <h2><a href="<?php the_permalink() ?>" rel="nofollow noreferrer noopener"><?php the_title(); ?></a></h2>
        <p><?php echo get_the_excerpt(); ?></p>
<?php endwhile;?>

Method 2

Late answer as the main answer uses query_posts(), which should never be done.

Use a filter

Use the pre_get_posts filter and just set the portfolio post type for the main query. Use Conditional Tags to determine where you want to have this filter.

Quick Example

<?php
defined( 'ABSPATH' ) OR exit;
/* Plugin Name: (#6417) "Portfolio" post type in query */

add_filter( 'pre_get_posts', 'wpse_6417_portfolio_posts' );
function wpse_6417_portfolio_posts( $query )
{
    if (
        ! $query->is_main_query()
        // Here we can check for all Conditional Tags
        OR ! $query->is_archive() // For e.g.: Every archive will feature both post types
    )
        return $query;

    $query->set( 'post_type', array( 'post', 'portfolio' ) );

    return $query;
}

Disclaimer

The above code is a plugin, but can simply get stuffed in the functions.php file of your theme (which is not recommended).

Method 3

Add this code to your child themes functions file (recommended) to add your single CPT pages to your main loop

add_action( 'pre_get_posts', 'add_custom_post_types_to_loop' );

function add_custom_post_types_to_loop( $query ) {

if ( is_home() && $query->is_main_query() )

$query->set( 'post_type', array( 'post', 'portfolio' ) );

return $query;

}

Source http://codex.wordpress.org/Post_Types

Or create a custom archive-portfolio.php page template which will only display your CPT pages. This only needs to be done if you haven’t added a archive page using the plugin settings.

Example: ‘has_archive’ => true,

You can also control how many pages are displayed and the order in which they’re displayed on the archive page using this code:

add_action( 'pre_get_posts', 'cpt_items' );

function cpt_items( $query ) {

if( $query->is_main_query() && !is_admin() && is_post_type_archive( 'portfolio' ) ) {

$query->set( 'posts_per_page', '8' );

$query->set( 'order', 'ASC' );

    }

}

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0