如何呈现Wordpress动态侧边栏小部件？

Question

我一直在阅读Wordpress Source，试图更好地理解动态侧边栏的呈现方式。

然而，我正处于一个棘手的问题......

894 | do_action( 'dynamic_sidebar', $wp_registered_widgets[$id] );

我无法找到定义add_action（'dynamic_sidebar'，...）的位置。没有那部分，我会在发生的事情中迷失方向。

请参阅此处的代码：

https://github.com/WordPress/WordPress/blob/b7c13e27c255e1fc1f03ab2ab432f1652a0ac212/wp-includes/widgets.php#L894

为了提供更多上下文，我试图弄清楚如何从特定的侧边栏中获取一组小部件，从那里，我需要知道如何渲染该数组中的每个小部件。

我需要比dynamic_sidebar(...);给予我更好的控制

Answer 1

那么，该特定行允许您访问每个已注册的Widget属性，并使用它：

<?php
/* Plugin Name: Test registered widgets */

add_action( 'dynamic_sidebar', 'sidebar_widgets_so_18666065' );

/**
 * As this is an action hook, we don't return nothing
 * use the passed values to do your stuff
 */
function sidebar_widgets_so_18666065( $registered_widget )
{
    # Each registered widget passes the following array
    /*
    $registered_widget = Array
    (
        [name] => Meta
        [id] => meta-2
        [callback] => Array
            (
                [0] => WP_Widget_Meta Object
                    (
                        [id_base] => meta
                        [name] => Meta
                        [widget_options] => Array
                            (
                                [classname] => widget_meta
                                [description] => Log in/out, admin, feed and WordPress links
                            )

                        [control_options] => Array
                            (
                                [id_base] => meta
                            )

                        [number] => 2
                        [id] => meta-2
                        [updated] => 
                        [option_name] => widget_meta
                    )

                [1] => display_callback
            )

        [params] => Array
            (
                [0] => Array
                    (
                        [number] => 2
                    )

            )

        [classname] => widget_meta
        [description] => Log in/out, admin, feed and WordPress links
    )
    */
}

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