WooCommerce Nested Layered Nav Widget

This overrides the Layered Nav widget you get with WooCommerce, and nests your child attributes beneath the parent instead of having them all on the same level.

e.g.

<ul>
	<li><a href="/products/?filter_types=1">Parent 1</a> <span class="count">(1)</span>
		<ul>
			<li><a href="/products/?filter_types=2">Child 1.1</a> <span class="count">(1)</span></li>
			<li><a href="/products/?filter_types=3">Child 1.2</a> <span class="count">(1)</span></li>
		</ul>
	</li>
	<li><a href="/products/?filter_types=4">Parent 2</a> <span class="count">(1)</span>
		<ul>
			<li><a href="/products/?filter_types=5">Child 2.1</a> <span class="count">(1)</span></li>
		</ul>
	</li>
</ul>

Installation

Install with Composer

Add the package to your project’s composer.json file. Visit getcomposer.org for more information.

{
    "repositories": [
      {
        "type": "vcs",
        "url": "https://github.com/deadlyhifi/woocomm-nested-layered-nav"
      }
    ],
    "require": {
        "deadlyhifi/woocomm-nested-layered-nav": "^2.0"
    }
}

Install Manually

Download and include the class file into your themes functions.php like so:

include_once('WidgetNestedLayeredNav.php');

Register the Widget

Place the following in your functions.php to replace the default WooCommerce Layered Nav widget with this one.

function widget_nested_layered_nav() {
    if ( class_exists( 'WC_Widget_Layered_Nav' ) ) {
        unregister_widget( 'WC_Widget_Layered_Nav' );
        register_widget( 'WidgetNestedLayeredNav' );
    }
}
add_action( 'widgets_init', 'widget_nested_layered_nav', 15 );

CSS Magic

WooCommerce adds an X in-front of a selected filter, and also adds one to the child of a selected filter, whether that child is selected or not, since it is an a with a parent li.chosen.

Use this CSS to stop that from happening.

.woocommerce .widget_layered_nav ul li.chosen ul li:not(.chosen) a:before {
    content: "";
    margin-right: 0;
}

Changelog

2.0 - Update and simplify to work with WooCommerce 2.6.0+.
1.1 – Hide empty attributes, improve documentation.
1.0 – First version.