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Cristi Roberts
5,905 PointsWhen trying to register my widget, it doesn't show up in the widget area.
In the video 'how to create a wordpress plugin', I'm stuck on the part where you register a widget. My widget doesn't show up in the widget area of my site. Here is my code: class Wptreehouse_Badges_Widget extends WP_Widget {
function wptreehouse_badges_widget() {
// Instantiate the parent object
parent::__construct( false, 'Official Treehouse Badges Widget' );
}
function widget( $args, $instance ) {
// Widget output
extract( $args );
$title = apply_filters( 'widget_title' , $instance['title'] );
$options = get_option( 'wptreehouse_badges' );
$wptreehouse_profile = $options['wptreehouse_profile'];
require( 'inc/front-end.php' );
}
function update( $new_instance, $old_instance ) {
// Save widget options
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
return $instance;
}
function form( $instance ) {
// Output admin widget options form
$title = esc_attr($instance['title']);
require( 'inc/widget-fields.php' );
}
}
function wptreehouse_badges_register_widgets() { register_widget( 'Wptreehouse_Badges_Widget' ); }
add_action( 'widgets_init', 'wptreehouse_badges_register_widgets' );
2 Answers
Henrik Hansen
23,176 PointsThe issue is how you name the constructor function. There are a couple of ways you can make this work:
<?php
class Your_Class_Name extends Parent_Class_Name {
// the constructor function, notice that the same letters are capitalized!
function Your_Class_Name () {
parent::__construct($arg1, $arg2);
//do init stuff
}
// other functions should have lower case letters:
function your_other_function() {
//do stuff
}
}
?>
The more preferred way should be to use __construct:
<?php
// Camel-case is preferred outside of wordpress:
class YourOtherClassName extends ParentClassName {
// This is much easier to understand:
function __construct() {
parent::__construct($arg1, $arg2);
//do init stuff
}
function otherFunction() {
}
}
?>
If you leave out the construct function, the parent __construct will automatically be called. If you want to include parameters when creating your object, just put some params like this:
<?php
class YourClass {
function __construct( $arg1, $arg2 ) {
//do stuff
}
}
Cristi Roberts
5,905 PointsThank you Henrik. That helps a lot!
Henrik Hansen
23,176 PointsI should add that the __construct() way is for php 5+ and the other is for php 4.