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<?php |
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if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly |
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/** |
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* |
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* Renders the [sensei_unpurchased_courses] shortcode when a user is logged in. If the user is not logged in |
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* it will show all courses. |
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* This class is loaded int WP by the shortcode loader class. |
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* |
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* @class Sensei_Shortcode_Unpurchased_Courses |
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* @since 1.9.0 |
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* @package Sensei |
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* @category Shortcodes |
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* @author WooThemes |
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*/ |
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class Sensei_Shortcode_Unpurchased_Courses implements Sensei_Shortcode_Interface { |
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/** |
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* @var WP_Query to help setup the query needed by the render method. |
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*/ |
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protected $query; |
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/** |
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* @var string number of items to show on the current page |
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* Default: all. |
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*/ |
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protected $number; |
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/** |
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* @var string ordery by course field |
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* Default: date |
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*/ |
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protected $orderby; |
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/** |
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* @var string ASC or DESC |
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* Default: 'DESC' |
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*/ |
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protected $order; |
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/** |
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* Setup the shortcode object |
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* |
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* @since 1.9.0 |
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* @param array $attributes |
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* @param string $content |
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* @param string $shortcode the shortcode that was called for this instance |
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*/ |
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public function __construct( $attributes, $content, $shortcode ){ |
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// set up all argument need for constructing the course query |
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$this->number = isset( $attributes['number'] ) ? $attributes['number'] : '10'; |
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$this->orderby = isset( $attributes['orderby'] ) ? $attributes['orderby'] : 'title'; |
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// set the default for menu_order to be ASC |
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if( 'menu_order' == $this->orderby && !isset( $attributes['order'] ) ){ |
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$this->order = 'ASC'; |
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}else{ |
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// for everything else use the value passed or the default DESC |
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$this->order = isset( $attributes['order'] ) ? $attributes['order'] : 'DESC'; |
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} |
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// setup the course query that will be used when rendering |
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$this->setup_course_query(); |
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} |
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/** |
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* Sets up the object course query |
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* that will be used int he render method. |
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* |
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* @since 1.9.0 |
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*/ |
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protected function setup_course_query(){ |
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// course query parameters to be used for all courses |
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$query_args = array( |
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'post_type' => 'course', |
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'post_status' => 'publish', |
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// the number specified by the user will be used later in this function |
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'posts_per_page' => 1000, |
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'orderby' => $this->orderby, |
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'order' => $this->order |
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); |
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// get all the courses that has a product attached |
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$all_courses_query = new WP_Query( $query_args ); |
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$paid_courses_not_taken = array(); |
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// look through all course and find the purchasable ones that user has not purchased |
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foreach( $all_courses_query->posts as $course ){ |
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// only keep the courses with a product including only courses that the user not taking |
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$course_product_id = get_post_meta( $course->ID, '_course_woocommerce_product',true ); |
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if( is_numeric( $course_product_id ) |
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&& |
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! Sensei_Utils::user_started_course( $course->ID , get_current_user_id() ) |
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){ |
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$paid_courses_not_taken[] = $course->ID; |
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} |
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} // end foreach |
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// setup the course query again and only use the course the user has not purchased. |
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// this query will be loaded into the global WP_Query in the render function. |
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$query_args[ 'post__in' ] = $paid_courses_not_taken; |
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$query_args[ 'posts_per_page' ] = $this->number; |
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$this->query = new WP_Query( $query_args ); |
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}// end setup _course_query |
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/** |
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* Rendering the shortcode this class is responsible for. |
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* |
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* @return string $content |
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*/ |
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public function render(){ |
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global $wp_query; |
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if ( ! is_user_logged_in() ) { |
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$anchor_before = '<a href="' . esc_url( sensei_user_login_url() ) . '" >'; |
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$anchor_after = '</a>'; |
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$notice = sprintf( |
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__('You must be logged in to view the non-purchased courses. Click here to %slogin%s.'), |
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$anchor_before, |
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$anchor_after |
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); |
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Sensei()->notices->add_notice( $notice, 'info' ); |
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Sensei()->notices->print_notices(); |
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return ''; |
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} |
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// keep a reference to old query |
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$current_global_query = $wp_query; |
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// assign the query setup in $this-> setup_course_query |
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$wp_query = $this->query; |
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ob_start(); |
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Sensei()->notices->print_notices(); |
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Sensei_Templates::get_template('loop-course.php'); |
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$shortcode_output = ob_get_clean(); |
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//restore old query |
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$wp_query = $current_global_query; |
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return $shortcode_output; |
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}// end render |
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} |
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: