Added fallback function when no menu assigned

README.md

@@ -40,7 +40,7 @@ Update your `wp_nav_menu()` function in `header.php` to use the new walker by ad
 		'depth'      => 2,
 		'container'  => false,
 		'menu_class' => 'nav navbar-nav',
-		'fallback_cb' => 'wp_page_menu',
+		'fallback_cb' => 'wp_bootstrap_navwalker::fallback',
 		'walker' => new wp_bootstrap_navwalker())
 	);		  
 ?>
@@ -59,7 +59,7 @@ register_nav_menus( array(
 Typically the menu is wrapped with additional markup, here is an example of a ` navbar-fixed-top` menu that collapse for responsive navigation.
 
 ```php
-<nav class="navbar navbar-default navbar-fixed-top navbar-turquoise" role="navigation">
+<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
 	<!-- Brand and toggle get grouped for better mobile display -->
 	<div class="container">
 		<div class="navbar-header">
@@ -69,12 +69,12 @@ Typically the menu is wrapped with additional markup, here is an example of a `
 				<span class="icon-bar"></span>
 				<span class="icon-bar"></span>
 			</button>
-	
+
 			<a class="navbar-brand" href="<?php bloginfo('url'); ?>">
 				<?php bloginfo('name'); ?>
 			</a>
 		</div>
-	
+
 		<!-- Collect the nav links, forms, and other content for toggling -->
 		<div class="collapse navbar-collapse navbar-ex1-collapse">
 			<?php
@@ -84,22 +84,23 @@ Typically the menu is wrapped with additional markup, here is an example of a `
 					'depth'      => 2,
 					'container'  => false,
 					'menu_class' => 'nav navbar-nav',
-					'fallback_cb' => '',
+					'fallback_cb' => 'wp_bootstrap_navwalker::fallback',
 					'walker' => new wp_bootstrap_navwalker())
-				);		  
+				);
 			?>
-		</div><!-- /.navbar-collapse -->
-	</div><!-- /.container -->
+		</div>
+	</div>
 </nav>
 ```
+
 To change your menu style add Bootstrap nav class names to the `menu_class` declaration.
 
 Review options in the Bootstrap docs for more information on nav classes
 http://getbootstrap.com/components/#nav
 
 Displaying the Menu 
-------------
-To display the menu you must associate your menu with your theme location. You can do this by selecting your them location in the *Theme Locations* list wile editing your menu in the WordPress admin.
+-------------------
+To display the menu you must associate your menu with your theme location. You can do this by selecting your theme location in the *Theme Locations* list wile editing a menu in the WordPress menu manager.
 
 Extras
 ------------
@@ -134,6 +135,9 @@ To set a disabled link simoly set the **Title Attribute** to `disabled` and the
 
 Changelog
 ------------
+**2.0.3**
++ Included a fallback function that adds a link to the WordPress menu manager if no menu has been assigned to the theme location.
+
 **2.0.2**
 + Small tweak to ensure carets are only displayed on top level dropdowns.
 

wp_bootstrap_navwalker.php

@@ -4,7 +4,7 @@
  * Class Name: wp_bootstrap_navwalker
  * GitHub URI: https://github.com/twittem/wp-bootstrap-navwalker
  * Description: A custom WordPress nav walker class to implement the Twitter Bootstrap 2.3.2 navigation style in a custom theme using the WordPress built in menu manager.
- * Version: 2.0.2
+ * Version: 2.0.3
  * Author: Edward McIntyre - @twittem
  * License: GPL-2.0+
  * License URI: http://www.gnu.org/licenses/gpl-2.0.txt
@@ -40,7 +40,11 @@ function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
 
 		/**
 		 * Dividers, Headers or Disabled
+<<<<<<< HEAD
 	         * =============================
+=======
+		 * =============================
+>>>>>>> Added a fallback function when no menu assigned
 		 * Determine whether the item is a Divider, Header, Disabled or regular
 		 * menu item. To prevent errors we use the strcasecmp() function to so a
 		 * comparison that is not case sensitive. The strcasecmp() function returns
@@ -143,19 +147,34 @@ function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
 	 */
 
 	function display_element( $element, &$children_elements, $max_depth, $depth, $args, &$output ) {
-        if ( !$element ) {
-            return;
-        }
+		if ( !$element ) {
+			return;
+		}
 
-        $id_field = $this->db_fields['id'];
+		$id_field = $this->db_fields['id'];
 
-        //display this element
-        if ( is_object( $args[0] ) ) {
-           $args[0]->has_children = ! empty( $children_elements[$element->$id_field] );
-        }
+		//display this element
+		if ( is_object( $args[0] ) ) {
+		   $args[0]->has_children = ! empty( $children_elements[$element->$id_field] );
+		}
 
-        parent::display_element($element, $children_elements, $max_depth, $depth, $args, $output);
-    }
+		parent::display_element($element, $children_elements, $max_depth, $depth, $args, $output);
+	}
+
+	/**
+	 * Menu Fallback
+	 * =============
+	 * If this function is assigned to the wp_nav_menu's fallback_cb variable
+	 * and a manu has not been assigned to the theme location in the WordPress
+	 * menu manager the function with display nothing to a non-logged in user,
+	 * and will add a link to the WordPress menu manager if logged in as an admin.
+	 */
+
+	function fallback() {
+		if( current_user_can( 'manage_options' ) ) {
+			echo '<li><a href="' . admin_url( 'nav-menus.php' ) . '">Add a menu</a></li>';
+		}
+	}
 }
 
 ?>