tutor / classes / Course_Filter.php

Course_Filter.php in Tutor LMS – eLearning and online course solution 2.0.1, at classes/Course_Filter.php

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1	<?php
2	namespace TUTOR;
3
4	if ( ! defined( 'ABSPATH' ) ) {
5	exit;
6	}
7
8	class Course_Filter {
9	private $category = 'course-category';
10	private $tag = 'course-tag';
11	private $current_term_id = null;
12
13	function __construct() {
14	add_action( 'wp_ajax_tutor_course_filter_ajax', array( $this, 'load_listing' ) );
15	add_action( 'wp_ajax_nopriv_tutor_course_filter_ajax', array( $this, 'load_listing' ) );
16	}
17
18	public function load_listing() {
19	tutils()->checking_nonce();
20	$_post = tutor_sanitize_data( $_POST );
21
22	$default_per_page = tutils()->get_option( 'courses_per_page', 12 );
23	$courses_per_page = (int) tutils()->array_get( 'course_per_page', $_post, $default_per_page );
24
25	$page = ( isset( $_post['page'] ) && is_numeric( $_post['page'] ) && $_post['page'] > 0 ) ? sanitize_text_field( $_post['page'] ) : 1;
26	$args = array(
27	'post_status' => 'publish',
28	'post_type' => 'courses',
29	'posts_per_page' => $courses_per_page,
30	'paged' => $page,
31	'tax_query' => array(
32	'relation' => 'OR',
33	),
34	);
35
36	// Prepare taxonomy
37	foreach ( array( 'category', 'tag' ) as $taxonomy ) {
38
39	$term_array = tutils()->array_get( 'tutor-course-filter-' . $taxonomy, $_post, array() );
40	! is_array( $term_array ) ? $term_array = array( $term_array ) : 0;
41
42	$term_array = array_filter(
43	$term_array,
44	function( $term_id ) {
45	return is_numeric( $term_id );
46	}
47	);
48
49	if ( count( $term_array ) > 0 ) {
50	$tax_query = array(
51	'taxonomy' => $this->$taxonomy,
52	'field' => 'term_id',
53	'terms' => $term_array,
54	'operator' => 'IN',
55	);
56	array_push( $args['tax_query'], $tax_query );
57	}
58	}
59
60	// Prepare level and price type
61	$is_membership = get_tutor_option( 'monetize_by' ) == 'pmpro' && tutils()->has_pmpro();
62	$level_price = array();
63	foreach ( array( 'level', 'price' ) as $type ) {
64
65	if ( $is_membership && 'price' === $type ) {
66	continue;
67	}
68
69	$type_array = tutils()->array_get( 'tutor-course-filter-' . $type, $_post, array() );
70	$type_array = array_map( 'sanitize_text_field', ( is_array( $type_array ) ? $type_array : array( $type_array ) ) );
71
72	if ( count( $type_array ) > 0 ) {
73	$level_price[] = array(
74	'key' => 'level' === $type ? '_tutor_course_level' : '_tutor_course_price_type',
75	'value' => $type_array,
76	'compare' => 'IN',
77	);
78	}
79	}
80	count( $level_price ) ? $args['meta_query'] = $level_price : 0;
81
82	$search_key = sanitize_text_field( tutils()->array_get( 'keyword', $_post, null ) );
83	$search_key ? $args['s'] = $search_key : 0;
84
85	if ( isset( $_post['tutor_course_filter'] ) ) {
86	switch ( $_post['tutor_course_filter'] ) {
87	case 'newest_first':
88	$args['orderby'] = 'ID';
89	$args['order'] = 'desc';
90	break;
91	case 'oldest_first':
92	$args['orderby'] = 'ID';
93	$args['order'] = 'asc';
94	break;
95	case 'course_title_az':
96	$args['orderby'] = 'post_title';
97	$args['order'] = 'asc';
98	break;
99	case 'course_title_za':
100	$args['orderby'] = 'post_title';
101	$args['order'] = 'desc';
102	break;
103	}
104	}
105
106	query_posts( apply_filters( 'tutor_course_filter_args', $args ) );
107	$col_per_row = (int) tutils()->array_get( 'column_per_row', $_post, 3 );
108	$GLOBALS['tutor_shortcode_arg'] = array(
109	'column_per_row' => $col_per_row <= 0 ? 3 : $col_per_row,
110	'course_per_page' => $courses_per_page,
111	'shortcode_enabled' => isset($_post['page_shortcode'])?true:false,
112	);
113
114	tutor_load_template( 'archive-course-init' );
115	exit;
116	}
117
118	private function get_current_term_id() {
119
120	if ( $this->current_term_id === null ) {
121	$queried = get_queried_object();
122	$this->current_term_id = ( is_object( $queried ) && property_exists( $queried, 'term_id' ) ) ? $queried->term_id : false;
123	}
124
125	return $this->current_term_id;
126	}
127
128	private function sort_terms_hierarchically( $terms, $parent_id = 0 ) {
129	$term_array = array();
130
131	foreach ( $terms as $term ) {
132	if ( $term->parent == $parent_id ) {
133	$term->children = $this->sort_terms_hierarchically( $terms, $term->term_id );
134	$term_array[] = $term;
135	}
136	}
137
138	return $term_array;
139	}
140
141	private function render_terms_hierarchically( $terms, $taxonomy ) {
142
143	$term_id = $this->get_current_term_id();
144
145	foreach($terms as $term){
146	?>
147	<div class="tutor-form-check tutor-mb-20">
148
149	<input type="checkbox" class="tutor-form-check-input" id="<?php echo $term->term_id; ?>" name="tutor-course-filter-<?php echo $taxonomy; ?>" value="<?php echo $term->term_id; ?>" <?php echo $term->term_id==$term_id ? 'checked="checked"' : ''; ?>/>
150
151	<label for="<?php echo $term->term_id; ?>">
152	<?php echo $term->name; ?>
153	</label>
154	</div>
155	<?php isset($term->children) ? $this->render_terms_hierarchically($term->children, $taxonomy) : 0; ?>
156	<?php
157	}
158	}
159
160	public function render_terms( $taxonomy ) {
161	$terms = get_terms(
162	array(
163	'taxonomy' => $this->$taxonomy,
164	'hide_empty' => true,
165	)
166	);
167	$this->render_terms_hierarchically( $this->sort_terms_hierarchically( $terms ), $taxonomy );
168	}
169	}
170