PLUGIN-DEV - ADD ADMIN COLUMNS

gistfile1.txt

	function __construct()
	{
		add_filter( 'manage_posts_columns' , array( $this, 'add_views_column' ) );	
		add_action( 'manage_posts_custom_column' , array( $this, 'add_data_into_views_column' ), 5, 2 );

	}

	public function add_views_column( $columns ) {

	    $columns['post_views'] = __('Views');
	    $columns['featured_image'] = __('Featured Image');

	    return $columns;
	}

	function add_data_into_views_column( $column_name, $postID ) {

		// print_r($column_name);

		if ( $column_name === 'post_views' ) {
	
			echo get_post_meta( $postID, 'views', true ); 

		}

		if ( $column_name === 'featured_image' ) {
	
			// Give the Post Thumbnail a class "alignleft".
			echo get_the_post_thumbnail( $postID, 'thumbnail', array( 'class' => 'alignleft' ) );			

		}
		
	}