Sensei_WC::is_woocommerce_present() - Code Metrics - Inspection of "General code cleanup" - woothemes/sensei - Measure and Improve Code Quality continuously with Scrutinizer

Completed
Push — master ( 201c1b...d51ce1 )

by Dwain
created 2015-12-05 03:33 UTC
Sensei_WC::is_woocommerce_present() A

↳ Parent: Sensei_WC
Complexity

Conditions	4
Paths	8
Size

Total Lines	15
Code Lines	6
Duplication

Lines	0
Ratio	0 %
Metric	Value
dl	0
loc	15
rs	9.2
cc	4
eloc	6
nc	8
nop	0
<?php
if ( ! defined( 'ABSPATH' ) ) exit; // security check, don't load file outside WP

/**
 * Sensei WooCommerce class
 *
 * All functions needed to integrate Sensei and WooCommerce
 *
 * @package Sensei
 * @category WooCommerce
 * @since 1.9.0
 */

Class Sensei_WC{
    /**
     * Load the files needed for the woocommerce integration.
     *
     * @since 1.9.0
     */
    public static function load_woocommerce_integration_hooks(){

        require_once( __DIR__ . '/hooks/woocommerce.php' );

    }
    /**
     * check if WooCommerce plugin is loaded and allowed by Sensei
     *
     * @since 1.9.0
     * @return bool
     */
    public static function is_woocommerce_active(){

        $is_woocommerce_enabled_in_settings = isset( Sensei()->settings->settings['woocommerce_enabled'] ) && Sensei()->settings->settings['woocommerce_enabled'];
        return self::is_woocommerce_present() && $is_woocommerce_enabled_in_settings;

    } // end is_woocommerce_active

    /**
     * Checks if the WooCommerce plugin is installed and activation.
     *
     * If you need to check if WooCommerce is activated use Sensei_Utils::is_woocommerce_active().
     * This function does nott check to see if the Sensei setting for WooCommerce is enabled.
     *
     * @since 1.9.0
     *
     * @return bool
     */
    public static function is_woocommerce_present(){

        $active_plugins = (array) get_option( 'active_plugins', array() );

        if ( is_multisite() ){

            $active_plugins = array_merge( $active_plugins, get_site_option( 'active_sitewide_plugins', array() ) );

        }

        $is_woocommerce_plugin_present_and_activated = in_array( 'woocommerce/woocommerce.php', $active_plugins ) || array_key_exists( 'woocommerce/woocommerce.php', $active_plugins );

        return class_exists( 'Woocommerce' ) || $is_woocommerce_plugin_present_and_activated;

    }// end is_woocommerce_present

    /**
     * Find the order active number (completed or processing ) for a given user on a course. It will return the latest order.
     *
     * If multiple exist we will return the latest order.
     *
     * @param $user_id
     * @param $course_id
     * @return array $user_course_orders
     */
    public static function get_learner_course_active_order_id( $user_id, $course_id ){

        $course_product_id = get_post_meta( $course_id, '_course_woocommerce_product', true );

        $orders_query = new WP_Query( array(
            'post_type'   => 'shop_order',
            'posts_per_page' => -1,
            'post_status' => array( 'wc-processing', 'wc-completed' ),
            'meta_key'=> '_customer_user',
            'meta_value'=> $user_id,
        ) );

        if( $orders_query->post_count == 0 ){

            return false;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}

        }

        foreach( $orders_query->get_posts() as $order ){

            $order = new WC_Order( $order->ID );
            $items = $order->get_items();

            $user_orders =  array();
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

            foreach( $items as $item ){

                // if the product id on the order and the one given to this function
                // this order has been placed by the given user on the given course.
                $product = wc_get_product( $item['product_id'] );

                if ( $product->is_type( 'variable' )) {

                    $item_product_id = $item['variation_id'];

                } else {

                    $item_product_id =  $item['product_id'];

                }

                if( $course_product_id == $item_product_id ){

                    return $order->id;

                }


            }//end for each order item

        } // end for each order

        // if we reach this place we found no order
        return false;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}

    } // end get_learner_course_active_order_ids

    /**
     * Output WooCommerce specific course filters
     * Removing the paged argument
     *
     * @since 1.9.0
     * @param $filter_links
     * @return mixed
     */
    public static function add_course_archive_wc_filter_links( $filter_links ){

        $course_url = remove_query_arg('paged', Sensei_Utils::get_current_url() );

        $free_courses = self::get_free_courses();
        $paid_courses = self::get_paid_courses();

        if ( empty( $free_courses ) || empty( $paid_courses )  ){
            // do not show any WooCommerce filters if all courses are
            // free or if all courses are paid
            return $filter_links;

        }

        $filter_links[] = array(    'id'=>'paid' ,
                                    'url'=> add_query_arg('course_filter', 'paid', $course_url),
                                    'title'=>__( 'Paid', 'woothemes-sensei' )
        );

        $filter_links[] = array(    'id'=>'free',
                                    'url'=>add_query_arg('course_filter', 'free', $course_url),
                                    'title'=>__( 'Free', 'woothemes-sensei' )
        );

        return $filter_links;

    }// end add_course_archive_wc_filter_links

    /**
     * Apply the free filter the the course query
     * getting all course with no products or products with zero price
     *
     * hooked into pre_get_posts
     *
     * @since 1.9.0
     * @param WP_Query $query
     * @return WP_Query $query
     */
    public static function course_archive_wc_filter_free( $query ){

        if( isset( $_GET['course_filter'] ) && 'free' == $_GET['course_filter']
            && 'course' == $query->get( 'post_type') && $query->is_main_query()  ){

            // setup the course meta query
            $meta_query = self::get_free_courses_meta_query_args();

            // manipulate the query to return free courses
            $query->set('meta_query', $meta_query );

            // don't show any paid courses
            $courses = self::get_paid_courses();
            $ids = array();
            foreach( $courses as $course ){
                $ids[] = $course->ID;
            }
            $query->set( 'post__not_in', $ids );

        }// end if course_filter

        return $query;

    }// course_archive_wc_filter_free

    /**
     * Apply the paid filter to the course query on the courses page
     * will include all course with a product attached with a price
     * more than 0
     *
     * hooked into pre_get_posts
     *
     * @since 1.9.0
     * @param WP_Query $query
     * @return WP_Query $query
     */
    public static function course_archive_wc_filter_paid( $query ){

        if( isset( $_GET['course_filter'] ) && 'paid' == $_GET['course_filter']
            && 'course' == $query->get( 'post_type') && $query->is_main_query() ){

            // setup the course meta query
            $meta_query = self::get_paid_courses_meta_query_args();

            // manipulate the query to return free courses
            $query->set('meta_query', $meta_query );

        }

        return $query;

    }

    /**
     * Load the WooCommerce single product actions above
     * single courses if woocommerce is active allowing purchase
     * information and actions to be hooked from WooCommerce.
     */
    public static function do_single_course_wc_single_product_action(){

        /**
         * this hooks is documented within the WooCommerce plugin.
         */
        if ( Sensei_WC::is_woocommerce_active() ) {

            do_action( 'woocommerce_before_single_product' );

        } // End If Statement

    }// end do_single_course_wc_single_product_action

    /**
     * Hooking into the single lesson page to alter the
     * user access permissions based on if they have purchased the
     * course the lesson belongs to.
     *
     * This function will only return false or the passed in user_access value.
     * It doesn't return true in order to avoid altering other options.
     *
     * @since 1.9.0
     *
     * @param $can_user_view_lesson
     * @param $lesson_id
     * @param $user_id
     * @return bool
     */
    public static function alter_can_user_view_lesson ( $can_user_view_lesson, $lesson_id, $user_id  ){

        // check if the course has a valid product attached to it
        // which the user should have purchased if they want to access
        // the current lesson
        $course_id = get_post_meta( $lesson_id , '_lesson_course', true);
        $wc_post_id = get_post_meta( $course_id, '_course_woocommerce_product', true );
        $product = Sensei()->sensei_get_woocommerce_product_object($wc_post_id);
        if( isset ($product) && is_object($product) ){

            // valid product found
            $order_id = self::get_learner_course_active_order_id( $user_id, $course_id );

            // product has a successful order so this user may access the content
            // this function may only return false or the default
            // returning true may override other negatives which we don't want
            if( ! $order_id ){


                return false;

            }

        }

        // return the passed in value
        return $can_user_view_lesson;

    }

    /**
     * Add course link to order thank you and details pages.
     *
     * @since  1.4.5
     * @access public
     *
     * @return void
     */
    public static function course_link_from_order( ) {

        if( ! is_order_received_page() ){
            return;
        }

        $order_id = get_query_var( 'order-received' );
		$order = new WC_Order( $order_id );

		// exit early if not wc-completed or wc-processing
		if( 'wc-completed' != $order->post_status
            && 'wc-processing' != $order->post_status  ) {
            return;
        }

        $course_links = array(); // store the for links for courses purchased
		foreach ( $order->get_items() as $item ) {

            if ( isset( $item['variation_id'] ) && ( 0 < $item['variation_id'] ) ) {

                // If item has variation_id then its a variation of the product
                $item_id = $item['variation_id'];

            } else {

                //If not its real product set its id to item_id
                $item_id = $item['product_id'];

            } // End If Statement

            $user_id = get_post_meta( $order->id, '_customer_user', true );

            if( $user_id ) {

                // Get all courses for product
                $args = Sensei_Course::get_default_query_args();
                $args['meta_query'] = array( array(
                            'key' => '_course_woocommerce_product',
                            'value' => $item_id
                        ) );
                $args['orderby'] = 'menu_order date';
                $args['order'] = 'ASC';

                // loop through courses
                $courses = get_posts( $args );
                if( $courses && count( $courses ) > 0 ) {

                    foreach( $courses as $course ) {

                        $title = $course->post_title;
                        $permalink = get_permalink( $course->ID );
                        $course_links[] .= '<a href="' . esc_url( $permalink ) . '" >' . $title . '</a> ';

                    } // end for each

                    // close the message div

                }// end if $courses check
            }
        }// end loop through orders

        // add the courses to the WooCommerce notice
        if( ! empty( $course_links) ){

            $courses_html = _nx(
                'You have purchased the following course:',
                'You have purchased the following courses:',
                count( $course_links ),
                'Purchase thank you note on Checkout page. The course link(s) will be show', 'woothemes-sensei'
            );

            foreach( $course_links as $link ){

                $courses_html .= '<li>' . $link . '</li>';

            }

            $courses_html .= ' </ul>';

            wc_add_notice( $courses_html, 'success' );
        }

	} // end course_link_order_form

    /**
     * Show the message that a user should complete
     * their purchase if the course is in the cart
     *
     * This should be used within the course loop or single course page
     *
     * @since 1.9.0
     */
    public static function course_in_cart_message(){

        global $post;

        if( self::is_course_in_cart( $post->ID ) ){ ?>

            <div class="sensei-message info">'
                <?php

                $cart_link =  '<a class="cart-complete" href="' . WC()->cart->get_checkout_url()
                              . '" title="' . __('complete purchase', 'woothemes-sensei') . '">'
                              . __('complete the purchase', 'woothemes-sensei') . '</a>';

                sprintf(  __('You have already added this Course to your cart. Please %1$s to access the course.', 'woothemes-sensei'), $cart_link );

                ?>
            </div>
        <?php }

    } // End sensei_woocommerce_in_cart_message()

    /**
     * Checks the cart to see if a course is in the cart.
     *
     * @param $course_id
     * @return bool
     */
    public static function is_course_in_cart( $course_id ){

        $wc_post_id = absint( get_post_meta( $course_id, '_course_woocommerce_product', true ) );
        $user_course_status_id = Sensei_Utils::user_started_course( $course_id , get_current_user_id() );

        if ( 0 < intval( $wc_post_id ) && ! $user_course_status_id ) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false

            if ( self::is_product_in_cart( $wc_post_id ) ) {

                return true;

            }

        }

        return false;

    }// is_course_in_cart

    /**
     * Check the cart to see if the product is in the cart
     *
     * @param $product_id
     * @return bool
     */
    public static function is_product_in_cart( $product_id ){

        if ( 0 < $product_id ) {

            $product = wc_get_product( $product_id );

            $parent_id = '';
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}
            if( isset( $product->variation_id ) && 0 < intval( $product->variation_id ) ) {
                $wc_product_id = $product->parent->id;
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}
            }
            foreach( WC()->cart->get_cart() as $cart_item_key => $values ) {

                $cart_product = $values['data'];
                if( $product_id == $cart_product->id ) {

                    return true;

                }

            }
        } // End If Statement

        return false;

    } // end is_product_in_car

    /**
     * Get all free WooCommerce products
     *
     * @since 1.9.0
     *
     * @return array $free_products{
     *  @type int $wp_post_id
     * }
     */
    public static function get_free_product_ids(){

        return  get_posts( array(
            'post_type' => 'product',
            'posts_per_page' => '1000',
            'fields' => 'ids',
            'meta_query'=> array(
                'relation' => 'OR',
                array(
                    'key'=> '_regular_price',
                    'value' => 0,
                ),
                array(
                    'key'=> '_sale_price',
                    'value' => 0,
                ),
            ),
        ));

    }// end get free product query

    /**
     * The metat query for courses that are free
     *
     * @since 1.9.0
     * @return array $wp_meta_query_param
     */
    public static function get_free_courses_meta_query_args(){

        return array(
            'relation' => 'OR',
            array(
                'key'     => '_course_woocommerce_product',
                'value' => '-',
                'compare' => '=',
            ),
            array(
                'key'     => '_course_woocommerce_product',
                'value' => self::get_free_product_ids(),
                'compare' => 'IN',
            ),
        );

    }// get_free_courses_meta_query

    /**
     * The metat query for courses that are free
     *
     * @since 1.9.0
     * @return array $wp_query_meta_query_args_param
     */
    public static function get_paid_courses_meta_query_args(){

        $paid_product_ids = self::get_paid_product_ids();

        return array(
            array(
                'key'     => '_course_woocommerce_product',
                // when empty we give a false post_id to ensure the caller doesn't get any courses for their
                // query
                'value' => empty( $paid_product_ids  )? '-1000' : $paid_product_ids,
                'compare' => 'IN',
            ),
        );

    }// get_free_courses_meta_query

    /**
     * The WordPress Query args
     * for paid products on sale
     *
     * @since 1.9.0
     * @return array $product_query_args
     */
    public static function get_paid_products_on_sale_query_args(){


        $args = array(
                   'post_type' 		=> 'product',
                   'posts_per_page' 		=> 1000,
                   'orderby'         	=> 'date',
                   'order'           	=> 'DESC',
                   'suppress_filters' 	=> 0
        );

        $args[ 'fields' ]     = 'ids';

        $args[ 'meta_query' ] = array(
            'relation' => 'AND',
            array(
                'key'=> '_regular_price',
                'compare' => '>',
                'value' => 0,
            ),
            array(
                'key'=> '_sale_price',
                'compare' => '>',
                'value' => 0,
            ),
        );

        return $args;

    } // get_paid_products_on_sale_query_args


    /**
     * Return the WordPress query args for
     * products not on sale but that is not a free
     *
     * @since 1.9.0
     *
     * @return array
     */
    public static function get_paid_products_not_on_sale_query_args(){


        $args = array(
            'post_type' 		=> 'product',
            'posts_per_page' 		=> 1000,
            'orderby'         	=> 'date',
            'order'           	=> 'DESC',
            'suppress_filters' 	=> 0
        );

        $args[ 'fields' ]     = 'ids';
        $args[ 'meta_query' ] = array(
            'relation' => 'AND',
            array(
                'key'=> '_regular_price',
                'compare' => '>',
                'value' => 0,
            ),
            array(
                'key'=> '_sale_price',
                'compare' => '=',
                'value' => '',
            ),
        );

        return $args;


    } // get_paid_courses_meta_query

    /**
     * Get all WooCommerce non-free product id's
     *
     * @since 1.9.0
     *
     * @return array $woocommerce_paid_product_ids
     */
    public static function get_paid_product_ids(){

        // get all the paid WooCommerce products that has regular
        // and sale price greater than 0
        // will be used later to check for course with the id as meta
        $paid_product_ids_with_sale =  get_posts( self::get_paid_products_on_sale_query_args() );

        // get all the paid WooCommerce products that has regular price
        // greater than 0 without a sale price
        // will be used later to check for course with the id as meta
        $paid_product_ids_without_sale = get_posts( self::get_paid_products_not_on_sale_query_args() );

        // combine products ID's with regular and sale price grater than zero and those without
        // sale but regular price greater than zero
        $woocommerce_paid_product_ids = array_merge( $paid_product_ids_with_sale, $paid_product_ids_without_sale );

        // if
        if( empty($woocommerce_paid_product_ids) ){
            return array( );
        }
        return $woocommerce_paid_product_ids;

    }

    /**
     * Get all free courses.
     *
     * This course that have a WC product attached
     * that has a price or sale price of zero and
     * other courses with no WooCommerce products
     * attached.
     *
     * @since 1.9.0
     *
     * @return array
     */
    public static function get_free_courses(){

        $free_course_query_args = Sensei_Course::get_default_query_args();
        $free_course_query_args[ 'meta_query' ] = self::get_free_courses_meta_query_args();

        // don't show any paid courses
        $courses = self::get_paid_courses();
        $ids = array();
        foreach( $courses as $course ){
            $ids[] = $course->ID;
        }
        $free_course_query_args[ 'post__not_in' ] =  $ids;

        return get_posts( $free_course_query_args );

    }

    /**
     * Return all products that are not free
     *
     * @since 1.9.0
     * @return array
     */
    public static function get_paid_courses(){

        $paid_course_query_args = Sensei_Course::get_default_query_args();

        $paid_course_query_args[ 'meta_query' ] = self::get_paid_courses_meta_query_args();

        return get_posts(  $paid_course_query_args );
    }

    /**
     * Show the WooCommerce add to cart button for the  current course
     *
     * The function will only show the button if
     * 1- the user can buy the course
     * 2- if they have completed their pre-requisite
     * 3- if the course has a valid product attached
     *
     * @since 1.9.0
     * @param int $course_id
     * @return string $html markup for the button or nothing if user not allowed to buy
     */
    public static function the_add_to_cart_button_html( $course_id ){

        if ( ! Sensei_Course::is_prerequisite_complete( $course_id )) {
            return '';
        }

        $wc_post_id = self::get_course_product_id( $course_id );

        // Check if customer purchased the product
        if ( self::has_customer_bought_product(  get_current_user_id(), $wc_post_id )
            || empty( $wc_post_id ) ) {

            return '';

        }

        // based on simple.php in WC templates/single-product/add-to-cart/
        // Get the product
        $product = Sensei()->sensei_get_woocommerce_product_object( $wc_post_id );

        // do not show the button for invalid products, non purchasable products, out
        // of stock product or if course is already in cart
        if ( ! isset ( $product )
            || ! is_object( $product )
            || ! $product->is_purchasable()
            || ! $product->is_in_stock()
            || self::is_course_in_cart( $wc_post_id ) ) {

            return '';

        }

        //
        // button  output:
        //
        ?>

        <form action="<?php echo esc_url( $product->add_to_cart_url() ); ?>"
              class="cart"
              method="post"
              enctype="multipart/form-data">

            <input type="hidden" name="product_id" value="<?php echo esc_attr( $product->id ); ?>" />

            <input type="hidden" name="quantity" value="1" />

            <?php if ( isset( $product->variation_id ) && 0 < intval( $product->variation_id ) ) { ?>

                <input type="hidden" name="variation_id" value="<?php echo $product->variation_id; ?>" />
                <?php if( isset( $product->variation_data ) && is_array( $product->variation_data ) && count( $product->variation_data ) > 0 ) { ?>

                    <?php foreach( $product->variation_data as $att => $val ) { ?>

                        <input type="hidden" name="<?php echo esc_attr( $att ); ?>" id="<?php echo esc_attr( str_replace( 'attribute_', '', $att ) ); ?>" value="<?php echo esc_attr( $val ); ?>" />

                    <?php } ?>

                <?php } ?>

            <?php } ?>

            <button type="submit" class="single_add_to_cart_button button alt">
                <?php echo $product->get_price_html(); ?> - <?php  _e('Purchase this Course', 'woothemes-sensei'); ?>
            </button>

        </form>

        <?php
    } // end the_add_to_cart_button_html

    /**
     * Alter the no permissions message on the single course page
     * Changes the message to a WooCommerce specific message.
     *
     * @since 1.9.0
     *
     * @param $message
     * @param $post_id
     *
     * @return string $message
     */
    public static function alter_no_permissions_message( $message, $post_id ){

        if( empty( $post_id ) || 'course'!=get_post_type( $post_id ) ){
            return  $message;
        }

        $product_id = self::get_course_product_id( $post_id );

        if( ! $product_id
            || self::has_customer_bought_product( get_current_user_id(),$product_id ) ){

            return $message;

        }

        ob_start();
        self::the_course_no_permissions_message( $post_id );
        $woocommerce_course_no_permissions_message = ob_get_clean();

        return $woocommerce_course_no_permissions_message ;

    }
    /**
     * Show the no permissions message when a user is logged in
     * and have not yet purchased the current course
     *
     * @since 1.9.0
     */
    public static function the_course_no_permissions_message( $course_id ){


        // login link
        $my_courses_page_id = intval( Sensei()->settings->settings[ 'my_course_page' ] );
        $login_link =  '<a href="' . esc_url( get_permalink( $my_courses_page_id ) ) . '">' . __( 'log in', 'woothemes-sensei' ) . '</a>';

        ?>

        <span class="add-to-cart-login">
            <?php echo sprintf( __( 'Or %1$s to access your purchased courses', 'woothemes-sensei' ), $login_link ); ?>
        </span>

    <?php }

    /**
     * Checks if a user has bought a product item.
     *
     * @since  1.9.0
     *
     * @param  int $user_id
     * @param  int $product_id
     *
     * @return bool
     */
    public static function has_customer_bought_product ( $user_id, $product_id ){

        $orders = get_posts( array(
            'posts_per_page' => -1,
            'meta_key'    => '_customer_user',
            'meta_value'  => intval( $user_id ),
            'post_type'   => 'shop_order',
            'post_status' =>  array( 'wc-processing', 'wc-completed' ),
        ) );

        foreach ( $orders as $order_id ) {

            $order = new WC_Order( $order_id->ID );

            if ( $order->post_status != 'wc-completed' && $order->post_status != 'wc-processing' ) {

                continue;
            }

            if ( ! ( 0 < sizeof( $order->get_items() ) ) ) {

                continue;

            }

            foreach( $order->get_items() as $item ) {

                // Check if user has bought product
                if ( $item['product_id'] == $product_id || $item['variation_id'] == $product_id ) {

                    // Check if user has an active subscription for product
                    if( class_exists( 'WC_Subscriptions_Manager' ) ) {
                        $sub_key = WC_Subscriptions_Manager::get_subscription_key( $order_id->ID, $product_id );
                        if( $sub_key ) {
                            $sub = WC_Subscriptions_Manager::get_subscription( $sub_key );
                            if( $sub && isset( $sub['status'] ) ) {
                                if( 'active' == $sub['status'] ) {
                                    return true;
                                } else {
                                    return false;
                                }
                            }
                        }
                    }

                    // Customer has bought product
                    return true;
                } // End If Statement

            } // End For each item

        } // End For each order

    } // end has customer bought product

    /**
     * Return the product id for the given course
     *
     * @since 1.9.0
     *
     * @param int $course_id
     *
     * @return string $woocommerce_product_id or false if none exist
     *
     */
    public static function get_course_product_id( $course_id ){

        $product_id =  get_post_meta( $course_id, '_course_woocommerce_product', true );

        if( empty( $product_id ) || 'product' != get_post_type( $product_id ) ){
            return false;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
        }

        return $product_id;

    }

    /**
     * Alter the body classes adding WooCommerce to the body
     *
     * @param array $classes
     * @return array
     */
    public static function add_woocommerce_body_class( $classes ){

        if( ! in_array( 'woocommerce', $classes ) ){

            $classes[] ='woocommerce';

        }


        return $classes;

    }

}// end Sensei_WC

woothemes / sensei

Push — master ( 201c1b...d51ce1 )

Sensei_WC::is_woocommerce_present() A

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