how to add dynamic focus to bootstrap navbar li? - wordpress

Question

Hi I am using wordpress and bootstrap, I want to add active class in wp_list_pages(), but I have tried many things all in vain, I need help.
I also used data-toggle="pills" but stops all javascript
here is my navbar
<div class="navbar navbar-inverse navbar-fixed-top center">
<div class="navbar-inner">
<div class="container center">
<div class="nav-collapse collapse">
<ul class="nav" >
<?php wp_list_pages(array('title_li' => '')) ; ?>
</ul>
</div>
</div>
</div>

Answer 1

I notice you are using the old wp_list_pages function to create a navigation. I recommend you use the newer wp_nav_menu which works almost the same, but better (even has fallback support for wp_list_pages.
Either way, what you are looking to add is a Walker to the array, just remember that in the walker you don't pass a string, but an object.
I successfully added my WordPress and Bootstrap menu to work well like so:
Add this to your functions.php
// Bootstrap Dropdown Menus
add_action( 'after_setup_theme', 'bootstrap_setup' );
if ( ! function_exists( 'bootstrap_setup' ) ):
function bootstrap_setup(){
add_action( 'init', 'register_menu' );
function register_menu(){
register_nav_menu( 'top-bar', 'Bootstrap Top Menu' );
}
class Bootstrap_Walker_Nav_Menu extends Walker_Nav_Menu {
function start_lvl( &$output, $depth ) {
$indent = str_repeat( "\t", $depth );
$output .= "\n$indent<ul class=\"dropdown-menu\">\n";
}
function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
$li_attributes = '';
$class_names = $value = '';
$classes = empty( $item->classes ) ? array() : (array) $item->classes;
$classes[] = ($args->has_children) ? 'dropdown' : '';
$classes[] = ($item->current || $item->current_item_ancestor) ? 'active' : '';
$classes[] = 'menu-item-' . $item->ID;
$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) );
$class_names = ' class="' . esc_attr( $class_names ) . '"';
$id = apply_filters( 'nav_menu_item_id', 'menu-item-'. $item->ID, $item, $args );
$id = strlen( $id ) ? ' id="' . esc_attr( $id ) . '"' : '';
$output .= $indent . '<li' . $id . $value . $class_names . $li_attributes . '>';
$attributes = ! empty( $item->attr_title ) ? ' title="' . esc_attr( $item->attr_title ) .'"' : '';
$attributes .= ! empty( $item->target ) ? ' target="' . esc_attr( $item->target ) .'"' : '';
$attributes .= ! empty( $item->xfn ) ? ' rel="' . esc_attr( $item->xfn ) .'"' : '';
$attributes .= ! empty( $item->url ) ? ' href="' . esc_attr( $item->url ) .'"' : '';
$attributes .= ($args->has_children) ? ' class="dropdown-toggle" data-toggle="dropdown"' : '';
$item_output = $args->before;
$item_output .= '<a'. $attributes .'>';
$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
$item_output .= ($args->has_children) ? ' <b class="caret"></b></a>' : '</a>';
$item_output .= $args->after;
$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
}
function display_element( $element, &$children_elements, $max_depth, $depth=0, $args, &$output ) {
if ( !$element )
return;
$id_field = $this->db_fields['id'];
//display this element
if ( is_array( $args[0] ) )
$args[0]['has_children'] = ! empty( $children_elements[$element->$id_field] );
else if ( is_object( $args[0] ) )
$args[0]->has_children = ! empty( $children_elements[$element->$id_field] );
$cb_args = array_merge( array(&$output, $element, $depth), $args);
call_user_func_array(array(&$this, 'start_el'), $cb_args);
$id = $element->$id_field;
// descend only when the depth is right and there are childrens for this element
if ( ($max_depth == 0 || $max_depth > $depth+1 ) && isset( $children_elements[$id]) ) {
foreach( $children_elements[ $id ] as $child ){
if ( !isset($newlevel) ) {
$newlevel = true;
//start the child delimiter
$cb_args = array_merge( array(&$output, $depth), $args);
call_user_func_array(array(&$this, 'start_lvl'), $cb_args);
}
$this->display_element( $child, $children_elements, $max_depth, $depth + 1, $args, $output );
}
unset( $children_elements[ $id ] );
}
if ( isset($newlevel) && $newlevel ){
//end the child delimiter
$cb_args = array_merge( array(&$output, $depth), $args);
call_user_func_array(array(&$this, 'end_lvl'), $cb_args);
}
//end this element
$cb_args = array_merge( array(&$output, $element, $depth), $args);
call_user_func_array(array(&$this, 'end_el'), $cb_args);
}
}
}
endif;
I found how to do this from a gist that John Megahan has here.
Your PHP would look like this instead of wp_list_pages:
<?php
$main_menu = array(
'menu' => 'main-menu',
'container' => false,
'depth' => 2,
'walker' => new Bootstrap_Walker_Nav_Menu()
);
wp_nav_menu( $main_menu );
?>
Notice that I'm using the 'menu' and setting it to 'main-menu' (this is the name of my menu that I can manage through the WP dashboard). Check out the codex to see exactly what parameters you can pass on wp_nav_menu ... but the bottom line here I think is that the Walker should help you extend to use the .active class that Bootstrap uses.