我正在尝试学习自定义帖子类型，我有一些问题。我正在尝试添加一个类别菜单，但由于某种原因，它似乎不起作用-我没有收到任何错误或任何东西。这是我的代码，请告诉我是否应该添加/改进某些内容：

// Create The Custom Post Type
function products_post_type(){
    register_post_type( \'generic_prodcts\',
        array(
            \'labels\'    =>  array(
                \'name\'          =>  __( \'Products\' ),
                \'singular_name\' =>  __( \'Product\' ),
                \'add_new_item\'  =>  __(\'Add New Product\'),
                \'edit_item\'     =>  __(\'Edit Product\'),
                \'search_items\'  =>  __(\'Search Products\')
            ),
            \'public\'        =>  true,
            \'has_archive\'   =>  true,
            \'rewrite\'       =>  array(\'slug\' => \'products\')
        )
    );
}
add_action( \'init\', \'products_post_type\' );

// Create The Columns
function generic_products_columns($columns){
    $columns = array(
        \'check\'     =>  \'<input type="checkbox" />\',
        \'title\'     =>  __(\'Title\',      \'trans\'),
        \'desc\'      =>  __(\'Description\',\'trans\'),
        \'price\'     =>  __(\'Price\',      \'trans\'),
    );
    return $columns;
}
add_filter("manage_generic_prodcts_posts_columns", "generic_products_columns");

// Create The Column Data
function generic_products_column_data( $column, $post_id ) {
    switch ( $column ) {
        case "title":
            $title = get_post_meta( $post_id, \'title\', true);
            echo \'<a href="\' . $title . \'">\' . $title. \'</a>\';
                break;
        case "desc":
            echo get_post_meta( $post_id, \'desc\', true);
                break;
        case "price":
            $price = get_post_meta( $post_id, \'price\', true);
            echo \'<a href="\' . $price . \'">\' . $price. \'</a>\';
                break;
    }
}
add_action( "manage_posts_custom_column", "generic_products_column_data");

// Make Post Type Columns Sortable
function generic_prodcts_sortable() {
  return array(
    \'title\' => \'Title\',
    \'desc\'  => \'Description\',
    \'price\' => \'Price\'
  );
}
add_filter( "manage_edit-generic_prodcts_sortable_columns", "generic_prodcts_sortable" );

register_taxonomy(
    \'Categories\', 
    array(\'generic_products\'), 
    array(
        \'hierarchical\'      => true, 
        \'label\'             => \'Categories\',
        \'singular_label\'    => \'Category\',
        \'rewrite\'           => true
    )
);

还有，我如何自定义自定义帖子类型页面？我想删除文本框并添加我自己的字段。我试过用谷歌搜索它，但我不知道如何解释才能找到合适的结果。

仅供参考，我只是以下几点：

Yoast 和Wordpress Codex

\'taxonomies\' => array(\'category\') 

    array(
        \'labels\'    =>  array(
            \'name\'          =>  __( \'Products\' ),
            \'singular_name\' =>  __( \'Product\' ),
            \'add_new_item\'  =>  __(\'Add New Product\'),
            \'edit_item\'     =>  __(\'Edit Product\'),
            \'search_items\'  =>  __(\'Search Products\')
        ),
        \'public\'        =>  true,
        \'has_archive\'   =>  true,
        \'rewrite\'       =>  array(\'slug\' => \'products\'),
        \'taxonomies\' => array(\'category\')
    )