Lesson.php — Tutor LMS – eLearning and online course solution 2.0.3

tutor / classes / Lesson.php

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Lesson.php

416 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	tutor_meta_box_wrapper( 'tutor-course-select', __( 'Select Course', 'tutor' ), array( $this, 'lesson_metabox' ), $lesson_post_type, 'advanced', 'default', 'tutor-admin-post-meta' );
69
70	tutor_meta_box_wrapper( 'tutor-lesson-videos', __( 'Lesson Video', 'tutor' ), array( $this, 'lesson_video_metabox' ), $lesson_post_type, 'advanced', 'default', 'tutor-admin-post-meta' );
71
72	tutor_meta_box_wrapper( 'tutor-lesson-attachments', __( 'Attachments', 'tutor' ), array( $this, 'lesson_attachments_metabox' ), $lesson_post_type, 'advanced', 'default', 'tutor-admin-post-meta' );
73	}
74
75	public function lesson_metabox() {
76	include tutor()->path . 'views/metabox/lesson-metabox.php';
77	}
78
79	public function lesson_video_metabox() {
80	include tutor()->path . 'views/metabox/video-metabox.php';
81	}
82
83	public function lesson_attachments_metabox() {
84	include tutor()->path . 'views/metabox/lesson-attachments-metabox.php';
85	}
86
87	/**
88	* @param $post_ID
89	*
90	* Saving lesson meta and assets
91	*/
92	public function save_lesson_meta( $post_ID ) {
93	//Video
94	$video_source = sanitize_text_field( tutor_utils()->array_get('video.source', $_POST) );
95	if ( $video_source === '-1'){
96	delete_post_meta($post_ID, '_video');
97	}elseif($video_source) {
98	$video = (array)tutor_utils()->array_get('video', $_POST, array());
99	update_post_meta($post_ID, '_video', $video);
100	}
101
102	// Attachments
103	$attachments = array();
104	if ( ! empty($_POST['tutor_attachments'])){
105	$attachments = tutor_utils()->sanitize_array($_POST['tutor_attachments']);
106	$attachments = array_unique($attachments);
107	}
108
109	/**
110	* it !empty attachment then update meta else
111	* delete meta key to prevetn empty data in db
112	*
113	* @since 1.8.9
114	*/
115	if ( ! empty( $attachments ) ) {
116	update_post_meta( $post_ID, '_tutor_attachments', $attachments );
117	} else {
118	delete_post_meta( $post_ID, '_tutor_attachments' );
119	}
120
121	}
122
123	public function tutor_load_edit_lesson_modal(){
124	tutor_utils()->checking_nonce();
125
126	$lesson_id = (int) tutor_utils()->avalue_dot( 'lesson_id', tutor_sanitize_data($_POST) );
127	$topic_id = (int) $_POST['topic_id'];
128
129	if(!tutor_utils()->can_user_manage('topic', $topic_id)) {
130	wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) );
131	}
132
133	/**
134	* If Lesson Not Exists, provide dummy
135	*/
136	$post_arr = array(
137	'ID' => 0,
138	'post_content' => '',
139	'post_type' => $this->lesson_post_type,
140	'post_title' => __( 'Draft Lesson', 'tutor' ),
141	'post_status' => 'publish',
142	'post_author' => get_current_user_id(),
143	'post_parent' => $topic_id,
144	);
145
146	$post = $lesson_id ? get_post($lesson_id) : (object)$post_arr;
147
148	ob_start();
149	include tutor()->path . 'views/modal/edit-lesson.php';
150	$output = ob_get_clean();
151
152	wp_send_json_success( array( 'output' => $output ) );
153	}
154
155	/**
156	* @since v.1.0.0
157	* @updated v.1.5.1
158	*/
159	public function tutor_modal_create_or_update_lesson(){
160	tutor_utils()->checking_nonce();
161
162	global $wpdb;
163
164	$lesson_id = (int) sanitize_text_field(tutor_utils()->avalue_dot('lesson_id', $_POST));
165	$topic_id = (int) sanitize_text_field(tutor_utils()->avalue_dot('current_topic_id', $_POST));
166	$current_topic_id = $topic_id;
167	$course_id = tutor_utils()->get_course_id_by('topic', $topic_id);
168	$_lesson_thumbnail_id = (int) sanitize_text_field(tutor_utils()->avalue_dot('_lesson_thumbnail_id', $_POST));
169
170	if(!tutor_utils()->can_user_manage('topic', $topic_id)) {
171	wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) );
172	}
173
174	$lesson_id = (int) sanitize_text_field( tutor_utils()->avalue_dot( 'lesson_id', $_POST ) );
175	$topic_id = (int) sanitize_text_field( tutor_utils()->avalue_dot( 'current_topic_id', $_POST ) );
176	$course_id = tutor_utils()->get_course_id_by( 'topic', $topic_id );
177	$_lesson_thumbnail_id = (int) tutor_utils()->avalue_dot( '_lesson_thumbnail_id', $_POST );
178
179	if ( ! tutils()->can_user_manage( 'topic', $topic_id ) ) {
180	wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) );
181	}
182
183	$title = sanitize_text_field( $_POST['lesson_title'] );
184	$lesson_content = wp_kses_post( $_POST['lesson_content'] );
185
186	$lesson_data = array(
187	'post_type' => $this->lesson_post_type,
188	'post_title' => $title,
189	'post_name' => sanitize_title($title),
190	'post_content' => $lesson_content,
191	'post_status' => 'publish',
192	'comment_status' => 'open',
193	'post_author' => get_current_user_id(),
194	'post_parent' => $topic_id
195	);
196
197	if ( $lesson_id == 0 ) {
198
199	$lesson_data['menu_order'] = tutor_utils()->get_next_course_content_order_id( $topic_id );
200	$lesson_id = wp_insert_post( $lesson_data );
201
202	if ( $lesson_id ) {
203	do_action( 'tutor/lesson/created', $lesson_id );
204	} else {
205	wp_send_json_error( array( 'message' => __( 'Couldn\'t create lesson.', 'tutor' ) ) );
206	}
207	} else {
208	$lesson_data['ID'] = $lesson_id;
209
210	do_action( 'tutor/lesson_update/before', $lesson_id );
211	wp_update_post( $lesson_data );
212	if ( $_lesson_thumbnail_id ) {
213	update_post_meta( $lesson_id, '_thumbnail_id', $_lesson_thumbnail_id );
214	} else {
215	delete_post_meta( $lesson_id, '_thumbnail_id' );
216	}
217
218	do_action( 'tutor/lesson_update/after', $lesson_id );
219	}
220
221	ob_start();
222	include tutor()->path . 'views/metabox/course-contents.php';
223	$course_contents = ob_get_clean();
224
225	wp_send_json_success( array( 'course_contents' => $course_contents ) );
226	}
227
228	/**
229	* Delete Lesson from course builder
230	*/
231	public function tutor_delete_lesson_by_id(){
232	tutor_utils()->checking_nonce();
233
234	$lesson_id = (int) tutor_utils()->avalue_dot( 'lesson_id', $_POST );
235
236	if(!tutor_utils()->can_user_manage('lesson', $lesson_id)) {
237	wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) );
238	}
239
240	wp_delete_post( $lesson_id, true );
241	wp_send_json_success();
242	}
243
244
245	/**
246	* @param $uri
247	* @param $lesson_id
248	*
249	* @return mixed
250	*
251	* Changed the URI based
252	*/
253
254	public function change_lesson_permalink( $uri, $lesson_id ) {
255	$post = get_post( $lesson_id );
256
257	if ( $post && $post->post_type === $this->lesson_post_type ) {
258	$uri_base = trailingslashit( site_url() );
259
260	$sample_course = 'sample-course';
261	$is_course = tutor_utils()->get_course_id_by( 'lesson', get_the_ID() );
262	if ( $is_course ) {
263	$course = get_post( $is_course );
264	if ( $course ) {
265	$sample_course = $course->post_name;
266	}
267	}
268
269	$new_course_base = $uri_base . "course/{$sample_course}/lesson/%pagename%/";
270	$uri[0] = $new_course_base;
271	}
272
273	return $uri;
274	}
275
276
277	public function flush_rewrite_rules() {
278	$is_required_flush = get_option( 'required_rewrite_flush' );
279	if ( $is_required_flush ) {
280	flush_rewrite_rules();
281	delete_option( 'required_rewrite_flush' );
282	}
283	}
284
285
286	public function add_column( $columns ) {
287	$date_col = $columns['date'];
288	unset( $columns['date'] );
289	$columns['course'] = __( 'Course', 'tutor' );
290	$columns['date'] = $date_col;
291
292	return $columns;
293	}
294
295	/**
296	* @param $column
297	* @param $post_id
298	*/
299	public function custom_lesson_column( $column, $post_id ) {
300	if ( $column === 'course' ) {
301
302	$course_id = tutor_utils()->get_course_id_by( 'lesson', $post_id );
303	if ( $course_id ) {
304	echo '<a href="' . admin_url( 'post.php?post=' . $course_id . '&action=edit' ) . '">' . get_the_title( $course_id ) . '</a>';
305	}
306	}
307	}
308
309	/**
310	*
311	* Mark lesson completed
312	*
313	* @since v.1.0.0
314	*/
315	public function mark_lesson_complete() {
316	if ( ! isset( $_POST['tutor_action'] ) \|\| $_POST['tutor_action'] !== 'tutor_complete_lesson' ) {
317	return;
318	}
319	// Checking nonce
320	tutor_utils()->checking_nonce();
321
322	$user_id = get_current_user_id();
323
324	// TODO: need to show view if not signed_in
325	if ( ! $user_id ) {
326	die( __( 'Please Sign-In', 'tutor' ) );
327	}
328
329	$lesson_id = (int) $_POST['lesson_id'];
330
331	do_action( 'tutor_lesson_completed_before', $lesson_id );
332	/**
333	* Marking lesson at user meta, meta format, _tutor_completed_lesson_id_{id} and value = tutor_time();
334	*/
335	tutor_utils()->mark_lesson_complete( $lesson_id );
336
337	do_action( 'tutor_lesson_completed_email_after', $lesson_id, $user_id );
338	do_action( 'tutor_lesson_completed_after', $lesson_id, $user_id );
339	}
340
341	/**
342	* Render the lesson content
343	*/
344	public function tutor_render_lesson_content(){
345	tutor_utils()->checking_nonce();
346
347	$lesson_id = (int) tutor_utils()->avalue_dot( 'lesson_id', $_POST );
348
349	$ancestors = get_post_ancestors($lesson_id);
350	$course_id = !empty($ancestors) ? array_pop($ancestors): $lesson_id;
351
352	// Course must be public or current user must be enrolled to access this lesson
353	if(get_post_meta($course_id, '_tutor_is_public_course', true)!=='yes' && !tutor_utils()->is_enrolled($course_id)){
354
355	$is_admin = tutor_utils()->has_user_role('administrator');
356	$allowed = $is_admin ? true : tutor_utils()->is_instructor_of_this_course(get_current_user_id(), $course_id);
357
358	if ( ! $allowed ) {
359	http_response_code( 400 );
360	exit;
361	}
362	}
363
364	ob_start();
365	global $post;
366
367	$post = get_post( $lesson_id );
368	setup_postdata( $post );
369	tutor_lesson_content();
370	wp_reset_postdata();
371
372	$html = ob_get_clean();
373
374	wp_send_json_success(array('html' => $html));
375	}
376
377	/**
378	* Load next course item automatically
379	*
380	* @since v.1.4.9
381	*/
382	public function autoload_next_course_content() {
383	tutor_utils()->checking_nonce();
384
385	$post_id = sanitize_text_field($_POST['post_id']);
386	$content_id = tutor_utils()->get_post_id($post_id);
387	$contents = tutor_utils()->get_course_prev_next_contents_by_id($content_id);
388
389	$autoload_course_content = (bool) get_tutor_option( 'autoload_next_course_content' );
390	$next_url = false;
391	if ( $autoload_course_content ) {
392	$next_url = get_the_permalink( $contents->next_id );
393	}
394	wp_send_json_success( array( 'next_url' => $next_url ) );
395	}
396
397	/**
398	* Load next course item after click complete button
399	*
400	* @since v.1.5.3
401	*/
402	public function tutor_lesson_completed_after( $content_id ) {
403	$contents = tutor_utils()->get_course_prev_next_contents_by_id( $content_id );
404	$autoload_course_content = (bool) get_tutor_option( 'autoload_next_course_content' );
405	if ( $autoload_course_content ) {
406	wp_redirect( get_the_permalink( $contents->next_id ) );
407	} else {
408	wp_redirect( get_the_permalink( $content_id ) );
409	}
410	die();
411	}
412
413	}
414
415
416