如何在Wordpress中扩展自定义窗口小部件? [英] How to extend a custom widget in wordpress?

问题描述

我正在谈论制作扩展WP_Widget的子小部件的小部件.

I am talking about making a widget which extends a child widget of WP_Widget.

以此作为参考: https://wordpress.stackexchange. com/questions/101438/how-to-extend-a-wp-widget-twice

示例:

My_WidgetBase 扩展了 WP_Widget

My_Widget 扩展了 My_WidgetBase

我想知道如何让 My_Widget 与其他小部件一起显示(当前不是).我已经 My_WidgetBase 开始工作.

I want to know how to get My_Widget to show up with my other widgets (it is not currently). I have gotten My_WidgetBase to work.

这对我的框架很重要.我知道必须重写widget()，update()和form()，但是我在任何地方都找不到关于制作WP_Widget的孙子的任何信息.

This is important for my framework. I understand that widget(), update(), and form() must be overridden, but I could not find anything about making a grandchild of WP_Widget anywhere.

示例:

class My_WidgetBase extends WP_Widget {

    public function __construct($id = 'my-widget-base', $desc = 'My WidgetBase', $opts = array()) {
        $widget_ops = array();
        parent::__construct( $id, $desc, $widget_ops );
    }

    public function widget( $args, $instance ) {
        die('function WP_Widget::widget() must be over-ridden in a sub-class.');
    }


    public function update( $new_instance, $old_instance ) {
        return $new_instance;
    }


    public function form( $instance ) {
        echo '<p class="no-options-widget">' . __('There are no options for this widget.') . '</p>';
        return 'noform';
    }

}

    function RegisterMyWidgets() {
        register_widget('My_WidgetBase');
    }

add_action( 'widgets_init', 'RegisterMyWidgets' );

推荐答案

解决了该线程的问题:

Solved digging further into this thread: https://wordpress.stackexchange.com/questions/101438/how-to-extend-a-wp-widget-twice

问题不在于类的实现，而在于如何将父类包括在框架中.我不是在同一个php文件中同时使用子级和子级，而是使用了两个具有不同目录的单独文件.

The problem was not with my implementation of the classes, but how I included the parent in my framework. I was not working with both child and grandchild in the same php file, but two separate files with different directories.

解决此问题是在我的孙子类目录中正确使用require_once()的问题.

Solving this problem was a matter of using require_once() correctly in the directory of my grandchild class.

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