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Creating a simple widget (2 posts)

  1. digitalnature
    Member
    Posted 4 years ago #

    I followed the new wordpress widget API and did this simple widget:

    class CategoryWidget extends WP_Widget{
    
        function CategoryWidget(){
        $widget_ops = array('classname' => 'categories', 'description' => __( "Theme-default category block") );
        $this->WP_Widget('categories', __('My Categories',), $widget_ops);
        }
    
        function widget($args, $instance){
          extract($args);
          $title = apply_filters('widget_title', empty($instance['title']) ? '' : $instance['title']);
    	  $orderby = empty( $instance['orderby'] ) ? 'name' : $instance['orderby'];
          $showcount = isset($instance['showcount']) ? $instance['showcount'] : false;
    
          echo $before_widget;
    
          if ( $title ) echo $before_title . $title . $after_title;
    
          // content......
    
          echo $after_widget;
      }
    
        function update($new_instance, $old_instance){
          $instance = $old_instance;
          $instance['title'] = strip_tags(stripslashes($new_instance['title']));
    
    	  if ( in_array( $new_instance['orderby'], array( 'name', 'ID', 'slug','count' ) ) ) {
    			$instance['orderby'] = $new_instance['orderby'];
    		} else {
    			$instance['orderby'] = 'name';
    		}
    
       	  if ( isset($new_instance['showcount']) ) $instance['showcount'] = 1;
    
        return $instance;
      }
    
        function form($instance){
          // defaults
          $instance = wp_parse_args( (array) $instance, array('orderby' => 'name', 'title'=>'Categories', 'showcount' => false) );
    
          $title = htmlspecialchars($instance['title']);
    
          echo '<p><label for="' . $this->get_field_name('title') . '">' . __('Title:',) . ' <br /><input class="widefat" id="' . $this->get_field_id('title') . '" name="' . $this->get_field_name('title') . '" type="text" value="' . $title . '" /></label></p>';
    
         ?>
    
         <p>
    	    <label for="<?php echo $this->get_field_id('orderby'); ?>"><?php _e( 'Sort categories by:', ); ?></label>
    		<select name="<?php echo $this->get_field_name('orderby'); ?>" id="<?php echo $this->get_field_id('orderby'); ?>" class="widefat">
    		 <option value="name"<?php selected( $instance['orderby'], 'name' ); ?>><?php _e('By name (alphabetically)',); ?></option>
    		 <option value="ID"<?php selected( $instance['orderby'], 'ID' ); ?>><?php _e('By category ID',); ?></option>
         	 <option value="slug"<?php selected( $instance['orderby'], 'slug' ); ?>><?php _e('By category slug',); ?></option>
    		 <option value="count"<?php selected( $instance['orderby'], 'count' ); ?>><?php _e( 'By post count', ); ?></option>
    		</select>
    	 </p>
    
    	 <label for="<?php echo $this->get_field_id('showcount'); ?>"><?php _e('Show Link showcount',); ?></label>
    	 <input class="checkbox" type="checkbox" <?php checked($instance['showcount'], true) ?> id="<?php echo $this->get_field_id('showcount'); ?>" name="<?php echo $this->get_field_name('showcount'); ?>" />
    
         <?php
    
      }
    }
    
    function MyWidgetsInit(){
      register_widget('CategoryWidget');
    }
    
    add_action('widgets_init', 'MyWidgetsInit');

    the problem is that I can't update some of the widget options from the dashboard. I can only set the title. "sortby" and "showcount" fields don't work, they just revert to the default value after I press save...

    I checked the code over and over again, and see no reason why it shouldn't work...

    did I miss something?

  2. digitalnature
    Member
    Posted 4 years ago #

    ok, I found the problem.
    It was a name conflict in WP_Widget('categories' ...

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