Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
This is an example plugin for Kinsta blog readers
<?php
/**
* @package Kinsta_widget
* @version 1.0
*/
/*
Plugin Name: Kinsta Widget
Plugin URI: http://wordpress.org/extend/plugins/#
Description: This is an example plugin
Author: Your Name
Version: 1.0
Author URI: http://example.com/
*/
class Kinsta_Widget extends WP_Widget {
/**
* Sets up the widgets name etc
*
* @link https://developer.wordpress.org/reference/classes/wp_widget/__construct/
* @see https://developer.wordpress.org/reference/functions/wp_register_sidebar_widget/
*
*/
public function __construct() {
$widget_ops = array(
'classname' => 'kinsta_widget',
'description' => 'A plugin for Kinsta blog readers',
);
parent::__construct( 'kinsta_widget', 'Kinsta Widget', $widget_ops );
}
/**
* Outputs the content of the widget on front-end
*
* @param array $args Widget arguments
* @param array $instance
*
* @link https://developer.wordpress.org/reference/classes/wp_widget/widget/
*/
public function widget( $args, $instance ) {
echo $args['before_widget'];
if ( ! empty( $instance['title'] ) ) {
echo $args['before_title'] . apply_filters( 'widget_title', $instance['title'] ) . $args['after_title'];
}
if( ! empty( $instance['selected_posts'] ) && is_array( $instance['selected_posts'] ) ){
$selected_posts = get_posts( array( 'post__in' => $instance['selected_posts'] ) );
?>
<ul>
<?php foreach ( $selected_posts as $post ) { ?>
<li><a href="<?php echo get_permalink( $post->ID ); ?>"><?php echo $post->post_title; ?></a></li>
<?php } ?>
</ul>
<?php
}else{
echo esc_html__( 'No posts selected!', 'text_domain' );
}
echo $args['after_widget'];
}
/**
* Outputs the options form on admin
*
* @param array $instance The widget options
*
* @link https://developer.wordpress.org/reference/classes/wp_widget/form/
*/
public function form( $instance ) {
$title = ! empty( $instance['title'] ) ? $instance['title'] : esc_html__( 'Title', 'text_domain' );
?>
<p>
<label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>"><?php esc_attr_e( 'Title:', 'text_domain' ); ?></label>
<input class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>">
</p>
<p>
<?php
$posts = get_posts( array(
'posts_per_page' => 20,
'offset' => 0
) );
$selected_posts = ! empty( $instance['selected_posts'] ) ? $instance['selected_posts'] : array();
?>
<div style="max-height: 120px; overflow: auto;">
<ul>
<?php foreach ( $posts as $post ) { ?>
<li><input type="checkbox" name="<?php echo esc_attr( $this->get_field_name( 'selected_posts' ) ); ?>[]" value="<?php echo $post->ID; ?>" <?php checked( ( in_array( $post->ID, $selected_posts ) ) ? $post->ID : '', $post->ID ); ?> /><?php echo get_the_title( $post->ID ); ?></li>
<?php } ?>
</ul>
</div>
<?php
}
/**
* Processing widget options on save
*
* @param array $new_instance The new options
* @param array $old_instance The previous options
*
* @link https://developer.wordpress.org/reference/classes/wp_widget/update/
*/
public function update( $new_instance, $old_instance ) {
$instance = array();
$instance['title'] = ( ! empty( $new_instance['title'] ) ) ? strip_tags( $new_instance['title'] ) : '';
$selected_posts = ( ! empty ( $new_instance['selected_posts'] ) ) ? (array) $new_instance['selected_posts'] : array();
$instance['selected_posts'] = array_map( 'sanitize_text_field', $selected_posts );
return $instance;
}
}
// register Kinsta_Widget
add_action( 'widgets_init', function(){
register_widget( 'Kinsta_Widget' );
});
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.