WordPress Plugin development Plugin development examples : Favorite Song Widget
Example
<?php
function wpshout_register_widgets() {
register_widget( 'Favorite_Song_Widget');
}
add_action( 'widgets_init', 'wpshout_register_widgets' );
class Favorite_Song_Widget extends WP_Widget {
function Favorite_Song_Widget() {
// Instantiate the parent object
parent::__construct(
'favorite_song_widget', // Base ID
__('Favorite Song', 'text_domain'), // Name
array( 'description' => __( 'Widget for playable favorite song', 'text_domain' ), ) // Args
);
}
function widget( $args, $instance ) {
echo $args['before_widget'];
echo '<h3>Favorite Song Lists:</h3>';
echo $instance['songinfo'];
echo '<a href="' . $instance['link'] . '">Download it</a><br>';
echo $instance['description'];
echo $args['after_widget'];
}
function update($new_abc,$old_abc) {
$instance = $old_abc;
// Fields
$instance['link'] = strip_tags($new_abc['link']);
$instance['songinfo'] = strip_tags($new_abc['songinfo']);
$instance['description'] = strip_tags($new_abc['description']);
return $instance;
}
// Widget form creation
function form($instance) {
$link = '';
$songinfo = '';
$description = '';
// Check values
if( $instance) {
$link = esc_attr($instance['link']);
$songinfo = esc_textarea($instance['songinfo']);
$description = esc_textarea($instance['description']);
} ?>
<p>
<label for="<?php echo $this->get_field_id('link'); ?>"><?php _e('Link', 'wp_widget_plugin'); ?></label>
<input class="widefat" id="<?php echo $this->get_field_id('link'); ?>" name="<?php echo $this->get_field_name('link'); ?>" type="text" value="<?php echo $link; ?>" />
</p>
<p>
<label for="<?php echo $this->get_field_id('songinfo'); ?>"><?php _e('Song Info:', 'wp_widget_plugin'); ?></label>
<input class="widefat" id="<?php echo $this->get_field_id('songinfo'); ?>" name="<?php echo $this->get_field_name('songinfo'); ?>" type="text" value="<?php echo $songinfo; ?>" />
</p>
<p>
<label for="<?php echo $this->get_field_id('description'); ?>"><?php _e('Description:', 'wp_widget_plugin'); ?></label>
<textarea class="widefat" id="<?php echo $this->get_field_id('description'); ?>" name="<?php echo $this->get_field_name('description'); ?>" type="text" value="<?php echo $description; ?>"></textarea>
</p>
<p><a href="#" id="add-more-tabs"><?php _e('Add More Tabs', 'wp_widget_plugin'); ?></a></p>
<?php }
}
