Shortcut Functions For Registering Taxonomies And Post Types In WordPress

After I had created several custom taxonomies and post types, adding more by directly calling the `register_taxonomy`[^1] and `register_post_type`[^2] functions seemed like a huge waste of space. The following functions create a shortcut for registering taxonomies and custom post types in WordPress; just choose whether you’d like the taxonomy to resemble Post Tags or Categories when calling the function `ucc_register_taxonomy`, and specify an array of taxonomies for `ucc_register_post_type`.


function ucc_register_taxonomy ( $single , $plural , $slug , $type = 'tag' ) {
$hierarchical = ( $type == 'category' ) ? 'true' : 'false';

$labels = array(
'name' => _x( $plural , 'taxonomy general name' ),
'singular_name' => _x( $single , 'taxonomy singular name' ),
'search_items' => __( 'Search ' . $plural ),
'all_items' => __( 'All ' . $plural ),
'parent_item' => __( 'Parent ' . $single ),
'parent_item_colon' => __( 'Parent ' . $single . ':' ),
'edit_item' => __( 'Edit ' . $single ),
'update_item' => __( 'Update ' . $single ),
'add_new_item' => __( 'Add New ' . $single ),
'new_item_name' => __( 'New ' . $single . ' Name' )
);

if ( !$hierarchical )
$labels = array_merge( $labels , array(
'parent_item' => null ,
'parent_item_colon' => null ,
'separate_items_with_commas' => __( 'Separate ' . strtolower( $plural ) . ' with commas' ),
'add_or_remove_items' => __( 'Add or remove ' . strtolower( $plural ) ),
'choose_from_most_used' => __( 'Choose from the most used ' . strtolower( $plural ) )
) );

register_taxonomy(
$slug , '' , array(
'hierarchical' => $hierarchical ,
'labels' => $labels ,
'show_ui' => true ,
'query_var' => $slug ,
'rewrite' => array( 'slug' => $slug )
) );
}

function ucc_register_post_type ( $singular , $plural , $slug , $hierarchical , $supports , $menu_icon , $taxonomies ) {
if ( empty( $supports ) || !is_array( $supports ) )
$supports = array( 'title' , 'editor' , 'author' , 'thumbnail' , 'excerpt' , 'trackbacks' , 'custom-fields' , 'comments' , 'revisions' );

if ( $hierarchical )
$supports = array_merge( $supports , array( 'page-attributes' ) );

if ( !is_array( $taxonomies ) )
$taxonomies = array( 'post_tag' , 'category' );

$labels = array(
'name' => _x( $plural , 'post type general name' ) ,
'singular_name' => _x( $singular , 'post type singular name' ) ,
'add_new' => _x( 'Add New' , strtolower( $singular ) ) ,
'add_new_item' => __( 'Add New ' . $singular ) ,
'edit_item' => __( 'Edit ' . $singular ) ,
'new_item' => __( 'New ' . $singular ) ,
'view_item' => __( 'View ' . $singular ) ,
'search_items' => __( 'Search ' . $plural ) ,
'not_found' => __( 'No ' . strtolower( $plural ) . ' found' ) ,
'not_found_in_trash' => __( 'No ' . strtolower( $plural ) . ' found in Trash' ) ,
'parent_item_colon' => ''
);

register_post_type(
$slug , array(
'labels' => $labels ,
'public' => true ,
'publicly_queryable' => true ,
'show_ui' => true ,
'query_var' => $slug ,
'rewrite' => array( 'slug' => $slug ) ,
'capability_type' => 'post' ,
'hierarchical' => $hierarchical ,
'supports' => $supports ,
'menu_position' => 5 ,
'menu_icon' => $menu_icon ,
'taxonomies' => $taxonomies
) );
}

add_action( 'init', 'ucc_register_taxonomies' );
function ucc_register_taxonomies() {
ucc_register_taxonomy( 'Ingredient' , 'Ingredients' , 'ingredient' , 'tag' );
ucc_register_taxonomy( 'Chapter' , 'Chapters' , 'chapter' , 'category' );

ucc_register_post_type( 'Recipe' , 'Recipes' , 'recipe' , false , '' , '/icons/16/fugue/cutlery.png' , array( 'category' , 'ingredient' , 'chapter' ) );
}

## References

[^1]: [Function Reference/register taxonomy](http://codex.wordpress.org/Function_Reference/register_taxonomy)
[^2]: [Function Reference/register post type](http://codex.wordpress.org/Function_Reference/register_post_type)

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