README

Breadcrumbs Class API for WordPress

This package create an HTML or Json Breadcrumbs elements to display on your WordPress site

Installation

Install with Composer

Add the package to your projects composer.json file. Visit getcomposer.org more information.

composer require italystrap/breadcrumbs

or

{
    "require": {
        "italystrap/breadcrumbs": "dev-master"
    }
}

Install Manually

Download and include the class file into your theme/plugin:

include_once 'path/to/ItalyStrap/Breadcrumbs.php';

Usage

Basic usage

Use \ItalyStrap\Breadcrumbs\Breadcrumbs_Factory::make( $type, $args ) to display the breadcrumbs in your template.

use ItalyStrap\Breadcrumbs;

echo Breadcrumbs_Factory::make( 'html', $args );

// Or

echo Breadcrumbs_Factory::make( 'json', $args );

The first parameter is the type of breadcrumbs you want to display:

• HTML
  • Return the HTML output
• Json
  • Return the Json output
• object
  • Return the object output
• array
  • Return the array output

Options

An optional array of arguments can be passed to modify the breadcrumb output. The defaults for each option @see Breadcrumbs/config/breadcrumbs.php

/**
 * Default configuration for Breadcrumbs
 */
return [

	/**
	 * This is the container of the breadcrumbs
	 * @example <nav aria-label="breadcrumb">...</nav>
	 */
	'container_tag'				=> 'nav',
	'container_attr'			=> [
		'aria-label'	=> 'breadcrumb',
	],

	/**
	 * This is the list tag of the breadcrumbs
	 * @example <ol class="breadcrumb" itemscope itemtype="https://schema.org/BreadcrumbList">...</ol>
	 */
	'list_tag'					=> 'ol',
	'list_attr'					=> [
		'class'			=> 'breadcrumb',
		'itemscope'		=> true,
		'itemtype'		=> 'https://schema.org/BreadcrumbList',
	],

	/**
	 * This is the item tag of the breadcrumbs
	 * @example <li class="breadcrumb-item [...active]" itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem">...</li>
	 */
	'item_tag'					=> 'li',
	'item_attr'					=> [
		'class'			=> "breadcrumb-item",
		'itemprop'		=> 'itemListElement',
		'itemscope'		=> true,
		'itemtype'		=> 'https://schema.org/ListItem',
	],
	/**
	 * Css class for active element
	 */
	'item_attr_class_active'	=> ' active',

	/**
	 * It could be passed an HTML icon to show instead of the firt element (home)
	 * @example <span class="glyphicon glyphicon-home" aria-hidden="true"></span>
	 */
	'home_icon'					=> false,

	/**
	 * Separator for the items
	 * @example ' /'
	 */
	'separator'					=> false,

	/**
	 * Show on front
	 * @default true
	 */
	'show_on_front'				=> true,
];

Default HTML output

<nav aria-label="breadcrumb">
	<ol class="breadcrumb" itemscope="" itemtype="https://schema.org/BreadcrumbList">
		<meta name="numberOfItems" content="2">
		<meta name="itemListOrder" content="Ascending">
		<li class="breadcrumb-item" itemprop="itemListElement" itemscope="" itemtype="https://schema.org/ListItem">
			<a itemprop="item" href="http://192.168.1.10/italystrap/">
				<span itemprop="name">ItalyStrap</span></a>
				<meta itemprop="position" content="1">
		</li>
		<li class="breadcrumb-item active" itemprop="itemListElement" itemscope="" itemtype="https://schema.org/ListItem" aria-current="page">
			<a itemprop="item" href="http://192.168.1.10/italystrap/blog/">
				<span itemprop="name">Blog</span></a>
				<meta itemprop="position" content="2">
		</li>
	</ol>
</nav>

Advanced usage

Example for HTML version

YOu can copy this snippet in your file breadcrumbs.php and include it in your plugin/theme

/**
 * Get the Breadcrumbs
 *
 * @param  array  $args The breadcrumbs arguments.
 *                      @see class Breadcrumbs for more info.
 * @return string       Return the breadcrumbs html.
 */
function get_breadcrumbs( array $args = array() ) {

	$args['bloginfo_name'] = GET_BLOGINFO_NAME;
	$args['home_url'] = HOME_URL;
	$args['separator'] = false;

	$args['show_on_front'] = false;

	try {

		return apply_filters(
			'italystrap_get_the_breadcrumbs',
			\ItalyStrap\Breadcrumbs\Breadcrumbs_Factory::make( 'html', $args ),
			$args
		);

	} catch ( Exception $e ) {
		echo $e->getMessage();
	}
}

/**
 * Print the Breadcrumbs
 *
 * @param  array  $args The breadcrumbs arguments.
 *                      @see class Breadcrumbs for more info.
 * @return string       Return the breadcrumbs html.
 */
function breadcrumbs( array $args = array() ) {

	echo get_breadcrumbs( $args );
}

/**
 * Do breadcrumbs
 *
 * @since 2.2.0
 *
 * @param  array  $args The breadcrumbs arguments.
 */
function do_breadcrumbs( array $args = array() ) {

	breadcrumbs( $args );
}
add_action( 'do_breadcrumbs', __NAMESPACE__ . '\do_breadcrumbs' );

Then with the function do_action( 'do_breadcrumbs', [] ) you can display the breadcrumbs where you want in your theme.

Example for Json version

/**
 * Get the Breadcrumbs
 *
 * @param  array  $args The breadcrumbs arguments.
 *                      @see class Breadcrumbs for more info.
 * @return string       Return the breadcrumbs html.
 */
function get_breadcrumbs( array $args = array() ) {

	$args['bloginfo_name'] = GET_BLOGINFO_NAME;
	$args['home_url'] = HOME_URL;

	$args['show_on_front'] = false;

	try {

		return apply_filters(
			'italystrap_get_the_breadcrumbs',
			\ItalyStrap\Breadcrumbs\Breadcrumbs_Factory::make( 'json', $args ),
			$args
		);

	} catch ( Exception $e ) {
		echo $e->getMessage();
	}
}

/**
 * Print the Breadcrumbs
 *
 * @param  array  $args The breadcrumbs arguments.
 *                      @see class Breadcrumbs for more info.
 * @return string       Return the breadcrumbs html.
 */
function breadcrumbs( array $args = array() ) {

	echo get_breadcrumbs( $args );
}

/**
 * Do breadcrumbs
 *
 * @since 2.2.0
 *
 * @param  array  $args The breadcrumbs arguments.
 */
function do_breadcrumbs( array $args = array() ) {

	breadcrumbs( $args );
}
add_action( 'wp_footer', __NAMESPACE__ . '\do_breadcrumbs' );

Filters

TODO

Other Example

TODO

array_insert()

array_insert() is a function that allows you to insert a new element into an array at a specific index.

Example array_insert()

/**
 * Modify breadcrums list
 *
 * @param  {array} $list
 *
 * @return {array}
 */
function modify_breadcrumbs_list( array $list ) {

    // if on the events category archive page
    if( is_tax( 'event-categories' ) ) {

        // create a new element
        $element = [
            'title'	=> "Shows",
            'url'	=> site_url( '/shows' )
        ];

        // add the new element at the index of 1
        $list = array_insert( $list, $element, 1 );
    }

    return $list;
}

add_filter( 'ItalyStrap\Breadcrumbs\Container\Items', 'modify_breadcrumbs_list' );

Notes

• Licensed under the GNU General Public License v2.0
• Maintained under the Semantic Versioning Guide

Author

Enea Overclokk

• https://italystrap.com/