Disable Blog: Remove Posts and Comments from Wordpress.

disable-blog.php

<?php
/**
 * Plugin Name: Disable Blog
 * Description: Disable Posts and Comments in Wordpress.
 * Author: Dan Boulet
 * Author URI: http://danboulet.com/
 */

class Customize_Disable_Blog {
	/**
	 * Set up actions and filters.
	 *
	 * @static
	 * @access public
	 */
	public static function init() {
		add_action( 'admin_menu', array( __CLASS__, 'alter_admin_menu' ) );
		add_action( 'add_admin_bar_menus', array( __CLASS__, 'remove_admin_bar_menus' ) );
		add_action( 'wp_before_admin_bar_render', array( __CLASS__, 'alter_admin_toolbar' ) );
		add_action( 'admin_init', array( __CLASS__, 'remove_dashboard_widgets' ) );
		add_filter( 'manage_pages_columns', array( __CLASS__, 'remove_comments_columns' ) );
		add_filter( 'manage_media_columns', array( __CLASS__, 'remove_comments_columns' ) );
		remove_action( 'wp_head', 'feed_links', 2 ); // Remove main feeds.
		remove_action( 'wp_head', 'feed_links_extra', 3 ); // Remove post comments feed.
		add_action( 'wp_head', array( __CLASS__, 'restore_rss_feed' ), 1 ); // Restore the main feed.
	}

	/*
	 * Alter admin menu links.
	 *
	 * @static
	 * @access public
	 */
	public static function alter_admin_menu() {
		// We don’t need the posts edit page.
		remove_menu_page( 'edit.php' );
		// We don’t need to see comments.
		remove_menu_page( 'edit-comments.php' );
	}

	/**
	 * Remove menus from the admin bar.
	 *
	 * @static
	 * @access public
	 */
	public static function remove_admin_bar_menus() {
		// Remove comments menu from admin bar.
		remove_action( 'admin_bar_menu', 'wp_admin_bar_comments_menu', 60 );
	}

	/*
	 * Customize links in admin bar.
	 *
	 * @static
	 * @access public
	 */
	public static function alter_admin_toolbar() {
		global $wp_admin_bar;
		// Alter the New link.
		$new_content_link = $wp_admin_bar->get_node( 'new-content' );
		$new_content_link->href .= '?post_type=page';
		$wp_admin_bar->add_node( $new_content_link );
		// Remove link to add a new Post.
		$wp_admin_bar->remove_menu( 'new-post', 'new-content' );
	}

	/**
	 * Disable Dashboard widgets.
	 *
	 * @static
	 * @access public
	 */
	public static function remove_dashboard_widgets() {
		// Remove Quick Draft since we aren’t making use of Posts.
		remove_meta_box( 'dashboard_quick_press', 'dashboard', 'normal' );
		// Don’t display recent comments.
		remove_meta_box( 'dashboard_recent_comments', 'dashboard', 'normal' );
	}

	/**
	 * Remove comments column from Pages list.
	 */
	public static function remove_comments_columns( $columns ) {
		unset( $columns['comments'] );
		return $columns;
	}

	/**
	 * Output main feed link.
	 *
	 * @static
	 * @access public
	 */
	public static function restore_rss_feed() {
		echo '<link rel="alternate" type="application/rss+xml" title="' . get_bloginfo( 'sitename' ) . ' &raquo; Feed" href="' . get_bloginfo( 'rss2_url' ) . '">' . "\n";
	}
}

add_action( 'init', array( 'Customize_Disable_Blog', 'init' ) );