WordPress快速添加多个自定义文章类型

在添加WordPress自定义文章类型（custom post type）的时候，因为参数很多，会有很长的参数数组。如官方文档中的例子：

function codex_custom_init() {
  $labels = array(
    'name' => 'Books',
    'singular_name' => 'Book',
    'add_new' => 'Add New',
    'add_new_item' => 'Add New Book',
    'edit_item' => 'Edit Book',
    'new_item' => 'New Book',
    'all_items' => 'All Books',
    'view_item' => 'View Book',
    'search_items' => 'Search Books',
    'not_found' =>  'No books found',
    'not_found_in_trash' => 'No books found in Trash', 
    'parent_item_colon' => '',
    'menu_name' => 'Books'
  );
 
  $args = array(
    'labels' => $labels,
    'public' => true,
    'publicly_queryable' => true,
    'show_ui' => true, 
    'show_in_menu' => true, 
    'query_var' => true,
    'rewrite' => array( 'slug' => 'book' ),
    'capability_type' => 'post',
    'has_archive' => true, 
    'hierarchical' => false,
    'menu_position' => null,
    'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'excerpt', 'comments' )
  ); 
 
  register_post_type( 'book', $args );
}
add_action( 'init', 'codex_custom_init' );

这样写起来并不难，但是试想一下，如果我们的项目有要注册多个自定义文章类型的时候，那代码不是变得更长？所以就考虑将它们写成函数，分别定义好了这些参数数组，这样无论注册多少个自定义文章类型，代码都非常简单。

// register post type label args 
function tj_cutom_post_type_label_args($typeName){
    return $labels = array(
        'name' => $typeName,
        'singular_name' => $typeName,
        'add_new' => 'Add New',
        'add_new_item' => 'Add New '.$typeName,
        'edit_item' => 'Edit '.$typeName,
        'new_item' => 'New '.$typeName,
        'all_items' => 'All '.$typeName,
        'view_item' => 'View '.$typeName,
        'search_items' => 'Search '.$typeName,
        'not_found' =>  'No '.$typeName.' found',
        'not_found_in_trash' => 'No '.$typeName.' found in Trash', 
        'parent_item_colon' => '',
        'menu_name' => $typeName
    );
}
 
// register post type args 
function tj_custom_post_type_args($typeName,$postType="post",$public=true,$queryable=true,$show_ui=true,$show_menu=true,$query_var=true,$has_archive = true, $hierarchical = false,$menu_position = null){
    return $args = array(
        'labels' => tj_cutom_post_type_label_args($typeName),
        'public' => $public,
        'publicly_queryable' => $queryable,
        'show_ui' => $show_ui, 
        'show_in_menu' => $show_menu, 
        'query_var' => $query_var,
        'rewrite' => array( 'slug' => strtolower($typeName)),
        'capability_type' => $postType,
        'has_archive' => $has_archive, 
        'hierarchical' => $hierarchical,
        'menu_position' => $menu_position,
        'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'excerpt', 'comments' )
    );
}

然后我们就可以通过下面的样例快速添加多个自定义文章类型啦：

function tj_custom_post_type() {
    register_post_type( 'portfolio', tj_custom_post_type_args("Portfolio"));
    register_post_type( 'testimonials', tj_custom_post_type_args("Testimonials"));
}
add_action( 'init', 'tj_custom_post_type' );

参考资料：http://wzbs.org/wordpress-custom-content-types-efficient-wording/