If is custom post type

Question

I am looking for a way to test if a post is a custom post type. For example, in say the sidebar I can put code like this:

 if( is_single()) {
        //code here
    }

I want code were I could do this, only testing for a custom post type. Any help would be greatly appreciated!

Answer 1

Here you are: get_post_type() and then if ( 'book' == get_post_type() ) ... as per Conditional Tags > A Post Type in Codex.

Answer 2

if (is_singular( 'book' ) {
  //conditional content/code
}

The above is TRUE when viewing a post of the Custom Post Type: book.

if (is_singular( array( 'newspaper', 'book' ) )) {
  //conditional content/code
}

The above is TRUE when viewing a post of the Custom Post Types: newspaper or book.

These are more conditional tags can be viewed here:

http://codex.wordpress.org/Conditional_Tags#A_Single_Page.2C_Single_Post_or_Attachment

Answer 3

For anyone else looking for this, add this to your functions.php and you can have the functionality, inside or outside of the loop:

function is_post_type($type){
    global $wp_query;
    if($type == get_post_type($wp_query->post->ID)) return true;
    return false;
}

so you can now use the following:

if (is_single() && is_post_type('post_type')){
  //work magic
}

EDIT Fixed Syntax

Answer 4

To test if a post is any custom post type, fetch the list of all not built-in post types and test if the post’s type is in that list.

As a function:

/**
 * Check if a post is a custom post type.
 * @param  mixed $post Post object or ID
 * @return boolean
 */
function is_custom_post_type( $post = NULL )
{
    $all_custom_post_types = get_post_types( array ( '_builtin' => FALSE ) );

    // there are no custom post types
    if ( empty ( $all_custom_post_types ) )
        return FALSE;

    $custom_types      = array_keys( $all_custom_post_types );
    $current_post_type = get_post_type( $post );

    // could not detect current type
    if ( ! $current_post_type )
        return FALSE;

    return in_array( $current_post_type, $custom_types );
}

Usage:

if ( is_custom_post_type() )
    print 'This is a custom post type!';

Answer 5

If for any reason you already have access to the global variable $post, you can simply use

if ($post->post_type == "your desired post type") {
}