Lesson.php — Tutor LMS – eLearning and online course solution 2.0.0

tutor / classes / Lesson.php

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Lesson.php

412 lines

1	<?php
2	namespace TUTOR;
3
4	if ( ! defined( 'ABSPATH' ) ) {
5	exit;
6	}
7
8	class Lesson extends Tutor_Base {
9	public function __construct() {
10	parent::__construct();
11
12	add_action( 'add_meta_boxes', array( $this, 'register_meta_box' ) );
13	add_action( 'save_post_' . $this->lesson_post_type, array( $this, 'save_lesson_meta' ) );
14
15	add_action( 'wp_ajax_tutor_load_edit_lesson_modal', array( $this, 'tutor_load_edit_lesson_modal' ) );
16	add_action( 'wp_ajax_tutor_modal_create_or_update_lesson', array( $this, 'tutor_modal_create_or_update_lesson' ) );
17	add_action( 'wp_ajax_tutor_delete_lesson_by_id', array( $this, 'tutor_delete_lesson_by_id' ) );
18
19	add_filter( 'get_sample_permalink', array( $this, 'change_lesson_permalink' ), 10, 2 );
20	add_action( 'admin_init', array( $this, 'flush_rewrite_rules' ) );
21
22	/**
23	* Add Column
24	*/
25
26	add_filter( "manage_{$this->lesson_post_type}_posts_columns", array( $this, 'add_column' ), 10, 1 );
27	add_action( "manage_{$this->lesson_post_type}_posts_custom_column", array( $this, 'custom_lesson_column' ), 10, 2 );
28
29	// Frontend Action
30	add_action( 'template_redirect', array( $this, 'mark_lesson_complete' ) );
31
32	add_action( 'wp_ajax_tutor_render_lesson_content', array( $this, 'tutor_render_lesson_content' ) );
33	add_action( 'wp_ajax_nopriv_tutor_render_lesson_content', array( $this, 'tutor_render_lesson_content' ) ); // For public course access
34
35	/**
36	* Autoplay next video
37	*
38	* @since v.1.4.9
39	*/
40	add_action( 'wp_ajax_autoload_next_course_content', array( $this, 'autoload_next_course_content' ) );
41
42	/**
43	* Load next course item after click complete button
44	*
45	* @since v.1.5.3
46	*/
47	add_action( 'tutor_lesson_completed_after', array( $this, 'tutor_lesson_completed_after' ), 999 );
48
49	add_action( 'wp_ajax_tutor_single_course_lesson_load_more', array($this, 'tutor_single_course_lesson_load_more') );
50	}
51
52	public function tutor_single_course_lesson_load_more() {
53	tutor_utils()->checking_nonce();
54
55	ob_start();
56	tutor_load_template('single.lesson.comment');
57	$html = ob_get_clean();
58
59	wp_send_json_success( array('html' => $html) );
60	}
61
62	/**
63	* Registering metabox
64	*/
65	public function register_meta_box() {
66	$lesson_post_type = $this->lesson_post_type;
67
68	add_meta_box( 'tutor-course-select', __( 'Select Course', 'tutor' ), array( $this, 'lesson_metabox' ), $lesson_post_type );
69	add_meta_box( 'tutor-lesson-videos', __( 'Lesson Video', 'tutor' ), array( $this, 'lesson_video_metabox' ), $lesson_post_type );
70	add_meta_box( 'tutor-lesson-attachments', __( 'Attachments', 'tutor' ), array( $this, 'lesson_attachments_metabox' ), $lesson_post_type );
71	}
72
73	public function lesson_metabox() {
74	include tutor()->path . 'views/metabox/lesson-metabox.php';
75	}
76
77	public function lesson_video_metabox() {
78	include tutor()->path . 'views/metabox/video-metabox.php';
79	}
80
81	public function lesson_attachments_metabox() {
82	include tutor()->path . 'views/metabox/lesson-attachments-metabox.php';
83	}
84
85	/**
86	* @param $post_ID
87	*
88	* Saving lesson meta and assets
89	*/
90	public function save_lesson_meta( $post_ID ) {
91	//Video
92	$video_source = sanitize_text_field( tutor_utils()->array_get('video.source', $_POST) );
93	if ( $video_source === '-1'){
94	delete_post_meta($post_ID, '_video');
95	}elseif($video_source) {
96	$video = (array)tutor_utils()->array_get('video', $_POST, array());
97	update_post_meta($post_ID, '_video', $video);
98	}
99
100	// Attachments
101	$attachments = array();
102	if ( ! empty($_POST['tutor_attachments'])){
103	$attachments = tutor_utils()->sanitize_array($_POST['tutor_attachments']);
104	$attachments = array_unique($attachments);
105	}
106
107	/**
108	* it !empty attachment then update meta else
109	* delete meta key to prevetn empty data in db
110	*
111	* @since 1.8.9
112	*/
113	if ( ! empty( $attachments ) ) {
114	update_post_meta( $post_ID, '_tutor_attachments', $attachments );
115	} else {
116	delete_post_meta( $post_ID, '_tutor_attachments' );
117	}
118
119	}
120
121	public function tutor_load_edit_lesson_modal(){
122	tutor_utils()->checking_nonce();
123
124	$lesson_id = (int) tutor_utils()->avalue_dot( 'lesson_id', tutor_sanitize_data($_POST) );
125	$topic_id = (int) $_POST['topic_id'];
126
127	if(!tutor_utils()->can_user_manage('topic', $topic_id)) {
128	wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) );
129	}
130
131	/**
132	* If Lesson Not Exists, provide dummy
133	*/
134	$post_arr = array(
135	'ID' => 0,
136	'post_content' => '',
137	'post_type' => $this->lesson_post_type,
138	'post_title' => __( 'Draft Lesson', 'tutor' ),
139	'post_status' => 'publish',
140	'post_author' => get_current_user_id(),
141	'post_parent' => $topic_id,
142	);
143
144	$post = $lesson_id ? get_post($lesson_id) : (object)$post_arr;
145
146	ob_start();
147	include tutor()->path . 'views/modal/edit-lesson.php';
148	$output = ob_get_clean();
149
150	wp_send_json_success( array( 'output' => $output ) );
151	}
152
153	/**
154	* @since v.1.0.0
155	* @updated v.1.5.1
156	*/
157	public function tutor_modal_create_or_update_lesson(){
158	tutor_utils()->checking_nonce();
159
160	global $wpdb;
161
162	$lesson_id = (int) sanitize_text_field(tutor_utils()->avalue_dot('lesson_id', $_POST));
163	$topic_id = (int) sanitize_text_field(tutor_utils()->avalue_dot('current_topic_id', $_POST));
164	$current_topic_id = $topic_id;
165	$course_id = tutor_utils()->get_course_id_by('topic', $topic_id);
166	$_lesson_thumbnail_id = (int) sanitize_text_field(tutor_utils()->avalue_dot('_lesson_thumbnail_id', $_POST));
167
168	if(!tutor_utils()->can_user_manage('topic', $topic_id)) {
169	wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) );
170	}
171
172	$lesson_id = (int) sanitize_text_field( tutor_utils()->avalue_dot( 'lesson_id', $_POST ) );
173	$topic_id = (int) sanitize_text_field( tutor_utils()->avalue_dot( 'current_topic_id', $_POST ) );
174	$course_id = tutor_utils()->get_course_id_by( 'topic', $topic_id );
175	$_lesson_thumbnail_id = (int) tutor_utils()->avalue_dot( '_lesson_thumbnail_id', $_POST );
176
177	if ( ! tutils()->can_user_manage( 'topic', $topic_id ) ) {
178	wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) );
179	}
180
181	$title = sanitize_text_field( $_POST['lesson_title'] );
182	$lesson_content = wp_kses_post( $_POST['lesson_content'] );
183
184	$lesson_data = array(
185	'post_type' => $this->lesson_post_type,
186	'post_title' => $title,
187	'post_name' => sanitize_title($title),
188	'post_content' => $lesson_content,
189	'post_status' => 'publish',
190	'comment_status' => 'open',
191	'post_author' => get_current_user_id(),
192	'post_parent' => $topic_id
193	);
194
195	if ( $lesson_id == 0 ) {
196
197	$lesson_data['menu_order'] = tutor_utils()->get_next_course_content_order_id( $topic_id );
198	$lesson_id = wp_insert_post( $lesson_data );
199
200	if ( $lesson_id ) {
201	do_action( 'tutor/lesson/created', $lesson_id );
202	} else {
203	wp_send_json_error( array( 'message' => __( 'Couldn\'t create lesson.', 'tutor' ) ) );
204	}
205	} else {
206	$lesson_data['ID'] = $lesson_id;
207
208	do_action( 'tutor/lesson_update/before', $lesson_id );
209	wp_update_post( $lesson_data );
210	if ( $_lesson_thumbnail_id ) {
211	update_post_meta( $lesson_id, '_thumbnail_id', $_lesson_thumbnail_id );
212	} else {
213	delete_post_meta( $lesson_id, '_thumbnail_id' );
214	}
215	do_action( 'tutor/lesson_update/after', $lesson_id );
216	}
217
218	ob_start();
219	include tutor()->path . 'views/metabox/course-contents.php';
220	$course_contents = ob_get_clean();
221
222	wp_send_json_success( array( 'course_contents' => $course_contents ) );
223	}
224
225	/**
226	* Delete Lesson from course builder
227	*/
228	public function tutor_delete_lesson_by_id(){
229	tutor_utils()->checking_nonce();
230
231	$lesson_id = (int) tutor_utils()->avalue_dot( 'lesson_id', $_POST );
232
233	if(!tutor_utils()->can_user_manage('lesson', $lesson_id)) {
234	wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) );
235	}
236
237	wp_delete_post( $lesson_id, true );
238	wp_send_json_success();
239	}
240
241
242	/**
243	* @param $uri
244	* @param $lesson_id
245	*
246	* @return mixed
247	*
248	* Changed the URI based
249	*/
250
251	public function change_lesson_permalink( $uri, $lesson_id ) {
252	$post = get_post( $lesson_id );
253
254	if ( $post && $post->post_type === $this->lesson_post_type ) {
255	$uri_base = trailingslashit( site_url() );
256
257	$sample_course = 'sample-course';
258	$is_course = tutor_utils()->get_course_id_by( 'lesson', get_the_ID() );
259	if ( $is_course ) {
260	$course = get_post( $is_course );
261	if ( $course ) {
262	$sample_course = $course->post_name;
263	}
264	}
265
266	$new_course_base = $uri_base . "course/{$sample_course}/lesson/%pagename%/";
267	$uri[0] = $new_course_base;
268	}
269
270	return $uri;
271	}
272
273
274	public function flush_rewrite_rules() {
275	$is_required_flush = get_option( 'required_rewrite_flush' );
276	if ( $is_required_flush ) {
277	flush_rewrite_rules();
278	delete_option( 'required_rewrite_flush' );
279	}
280	}
281
282
283	public function add_column( $columns ) {
284	$date_col = $columns['date'];
285	unset( $columns['date'] );
286	$columns['course'] = __( 'Course', 'tutor' );
287	$columns['date'] = $date_col;
288
289	return $columns;
290	}
291
292	/**
293	* @param $column
294	* @param $post_id
295	*/
296	public function custom_lesson_column( $column, $post_id ) {
297	if ( $column === 'course' ) {
298
299	$course_id = tutor_utils()->get_course_id_by( 'lesson', $post_id );
300	if ( $course_id ) {
301	echo '<a href="' . admin_url( 'post.php?post=' . $course_id . '&action=edit' ) . '">' . get_the_title( $course_id ) . '</a>';
302	}
303	}
304	}
305
306	/**
307	*
308	* Mark lesson completed
309	*
310	* @since v.1.0.0
311	*/
312	public function mark_lesson_complete() {
313	if ( ! isset( $_POST['tutor_action'] ) \|\| $_POST['tutor_action'] !== 'tutor_complete_lesson' ) {
314	return;
315	}
316	// Checking nonce
317	tutor_utils()->checking_nonce();
318
319	$user_id = get_current_user_id();
320
321	// TODO: need to show view if not signed_in
322	if ( ! $user_id ) {
323	die( __( 'Please Sign-In', 'tutor' ) );
324	}
325
326	$lesson_id = (int) $_POST['lesson_id'];
327
328	do_action( 'tutor_lesson_completed_before', $lesson_id );
329	/**
330	* Marking lesson at user meta, meta format, _tutor_completed_lesson_id_{id} and value = tutor_time();
331	*/
332	tutor_utils()->mark_lesson_complete( $lesson_id );
333
334	do_action( 'tutor_lesson_completed_email_after', $lesson_id, $user_id );
335	}
336
337	/**
338	* Render the lesson content
339	*/
340	public function tutor_render_lesson_content(){
341	tutor_utils()->checking_nonce();
342
343	$lesson_id = (int) tutor_utils()->avalue_dot( 'lesson_id', $_POST );
344
345	$ancestors = get_post_ancestors($lesson_id);
346	$course_id = !empty($ancestors) ? array_pop($ancestors): $lesson_id;
347
348	// Course must be public or current user must be enrolled to access this lesson
349	if(get_post_meta($course_id, '_tutor_is_public_course', true)!=='yes' && !tutor_utils()->is_enrolled($course_id)){
350
351	$is_admin = tutor_utils()->has_user_role('administrator');
352	$allowed = $is_admin ? true : tutor_utils()->is_instructor_of_this_course(get_current_user_id(), $course_id);
353
354	if ( ! $allowed ) {
355	http_response_code( 400 );
356	exit;
357	}
358	}
359
360	ob_start();
361	global $post;
362
363	$post = get_post( $lesson_id );
364	setup_postdata( $post );
365	tutor_lesson_content();
366	wp_reset_postdata();
367
368	$html = ob_get_clean();
369
370	wp_send_json_success(array('html' => $html));
371	}
372
373	/**
374	* Load next course item automatically
375	*
376	* @since v.1.4.9
377	*/
378	public function autoload_next_course_content() {
379	tutor_utils()->checking_nonce();
380
381	$post_id = sanitize_text_field($_POST['post_id']);
382	$content_id = tutor_utils()->get_post_id($post_id);
383	$contents = tutor_utils()->get_course_prev_next_contents_by_id($content_id);
384
385	$autoload_course_content = (bool) get_tutor_option( 'autoload_next_course_content' );
386	$next_url = false;
387	if ( $autoload_course_content ) {
388	$next_url = get_the_permalink( $contents->next_id );
389	}
390	wp_send_json_success( array( 'next_url' => $next_url ) );
391	}
392
393	/**
394	* Load next course item after click complete button
395	*
396	* @since v.1.5.3
397	*/
398	public function tutor_lesson_completed_after( $content_id ) {
399	$contents = tutor_utils()->get_course_prev_next_contents_by_id( $content_id );
400	$autoload_course_content = (bool) get_tutor_option( 'autoload_next_course_content' );
401	if ( $autoload_course_content ) {
402	wp_redirect( get_the_permalink( $contents->next_id ) );
403	} else {
404	wp_redirect( get_the_permalink( $content_id ) );
405	}
406	die();
407	}
408
409	}
410
411
412