Use repeater field in Wordpress menu-walker - php

Question

I'm using the walker menu function to create a submenu for each menu-item.
I'm using a repeater field to create info-divs and for each the_sub_field('info_block_img_file') on the current page I want to output a new li in the menu. But I don't now how implement it correctly in the walker.
This is what I tried, and it obviously didn't work:
var $tree_type = array( 'post_type', 'taxonomy', 'custom' );
var $db_fields = array( 'parent' => 'menu_item_parent', 'id' => 'db_id' );
function start_lvl( &$output, $depth = 0, $args = array() ) {
$indent = str_repeat("\t", $depth);
$output .= "\n$indent<ul class=\"sub-menu\">\n";
}
function end_lvl( &$output, $depth = 0, $args = array() ) {
$indent = str_repeat("\t", $depth);
$output .= "$indent</ul>\n";
}
function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
$class_names = $value = '';
$classes = empty( $item->classes ) ? array() : (array) $item->classes;
$classes[] = 'menu-item-' . $item->ID;
$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) );
$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';
$id = apply_filters( 'nav_menu_item_id', 'menu-item-'. $item->ID, $item, $args );
$id = $id ? ' id="' . esc_attr( $id ) . '"' : '';
$output .= $indent . '<li' . $id . $value . $class_names .'>';
$atts = array();
$atts['title'] = ! empty( $item->attr_title ) ? $item->attr_title : '';
$atts['target'] = ! empty( $item->target ) ? $item->target : '';
$atts['rel'] = ! empty( $item->xfn ) ? $item->xfn : '';
$atts['href'] = ! empty( $item->url ) ? $item->url : '';
$atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args );
$attributes = '';
foreach ( $atts as $attr => $value ) {
if ( ! empty( $value ) ) {
$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
$attributes .= ' ' . $attr . '="' . $value . '"';
}
}
$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->after;
$item_output .= '</a>';
$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
//Here’s where I’m trying to put my submenu:
$output .= '<ul id="about" class="dropDown">'. if(get_field('info_block')):
while(has_sub_field('info_block')): .'
<li>'. get_sub_field('info_block_header') .'</li>'. endwhile; endif; .
</ul>';
} function end_el( &$output, $item, $depth = 0, $args = array() ) {
$output .= "</li>\n";
}
} // Walker_Nav_Menu
?>

Answer 1

class Custom_walker_class extends Walker {
var $db_fields = array( 'parent' => 'menu_item_parent', 'id' => 'db_id' );
function start_lvl( &$output, $depth = 0, $args = array() ) {
$indent = str_repeat("\t", $depth);
$output .= "\n$indent<ul>\n";
}
function end_lvl( &$output, $depth = 0, $args = array() ) {
$indent = str_repeat("\t", $depth);
$output .= "$indent</ul>\n";
}
function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
global $wp_query;
$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
$class_names = $value = '';
$classes = empty( $item->classes ) ? array() : (array) $item->classes;
/* Add active class */
if(in_array('current-menu-item', $classes)) {
$classes[] = 'active';
unset($classes['current-menu-item']);
}
/* Check for children */
$children = get_posts(array('post_type' => 'nav_menu_item', 'nopaging' => true, 'numberposts' => 1, 'meta_key' => '_menu_item_menu_item_parent', 'meta_value' => $item->ID));
if (!empty($children)) {
$classes[] = 'has-sub';
}
$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) );
$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';
$id = apply_filters( 'nav_menu_item_id', 'menu-item-'. $item->ID, $item, $args );
$id = $id ? ' id="' . esc_attr( $id ) . '"' : '';
$output .= $indent . '<li' . $id . $value . $class_names .'>';
$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 ) .'"' : '';
$item_output = $args->before;
$item_output .= '<a'. $attributes .'><span>';
$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
$item_output .= '</span></a>';
$item_output .= $args->after;
// you need to call your custom out before applying filter
$output .= '<ul id="about" class="dropDown">';
if (get_field('info_block')):
while (has_sub_field('info_block')): ;
$output .='<li>' . get_sub_field('info_block_header') . '</li>';
endwhile;
endif;
$output .= '</ul>';
$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
}
function end_el( &$output, $item, $depth = 0, $args = array() ) {
$output .= "</li>\n";
}
}
You had syntax error near '. endwhile; endif; . you forget to use
single quote ' after concatinate the variable .
You need to call your custom output before applying_filter function because this will return output just after calling this
function.