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Quiz.php
1351 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Quiz class |
| 5 | * |
| 6 | * @author: themeum |
| 7 | * @author_uri: https://themeum.com |
| 8 | * @package Tutor |
| 9 | * @since v.1.0.0 |
| 10 | */ |
| 11 | |
| 12 | namespace TUTOR; |
| 13 | |
| 14 | if ( ! defined( 'ABSPATH' ) ) { |
| 15 | exit; |
| 16 | } |
| 17 | |
| 18 | class Quiz { |
| 19 | |
| 20 | private $allowed_attributes = array( |
| 21 | 'src' => array(), |
| 22 | 'style' => array(), |
| 23 | 'class' => array(), |
| 24 | 'id' => array(), |
| 25 | 'href' => array(), |
| 26 | 'alt' => array(), |
| 27 | 'title' => array(), |
| 28 | 'type' => array(), |
| 29 | 'controls' => array(), |
| 30 | 'muted' => array(), |
| 31 | 'loop' => array(), |
| 32 | 'poster' => array(), |
| 33 | 'preload' => array(), |
| 34 | 'autoplay' => array(), |
| 35 | 'width' => array(), |
| 36 | 'height' => array(), |
| 37 | ); |
| 38 | |
| 39 | private $allowed_html = array( 'img', 'b', 'i', 'br', 'a', 'audio', 'video', 'source' ); |
| 40 | |
| 41 | public function __construct() { |
| 42 | |
| 43 | add_action('save_post_tutor_quiz', array($this, 'save_quiz_meta')); |
| 44 | add_action('wp_ajax_remove_quiz_from_post', array($this, 'remove_quiz_from_post')); |
| 45 | |
| 46 | add_action( 'wp_ajax_tutor_quiz_timeout', array( $this, 'tutor_quiz_timeout' ) ); |
| 47 | |
| 48 | // User take the quiz |
| 49 | add_action( 'template_redirect', array( $this, 'start_the_quiz' ) ); |
| 50 | add_action( 'template_redirect', array( $this, 'answering_quiz' ) ); |
| 51 | add_action( 'template_redirect', array( $this, 'finishing_quiz_attempt' ) ); |
| 52 | |
| 53 | add_action('wp_ajax_review_quiz_answer', array($this, 'review_quiz_answer')); |
| 54 | add_action('wp_ajax_tutor_instructor_feedback', array($this, 'tutor_instructor_feedback')); // Instructor Feedback Action |
| 55 | |
| 56 | /** |
| 57 | * New Design Quiz |
| 58 | */ |
| 59 | |
| 60 | add_action('wp_ajax_tutor_quiz_save', array($this, 'tutor_quiz_save')); |
| 61 | add_action('wp_ajax_tutor_delete_quiz_by_id', array($this, 'tutor_delete_quiz_by_id')); |
| 62 | add_action('wp_ajax_tutor_load_quiz_builder_modal', array($this, 'tutor_load_quiz_builder_modal'), 10, 0); |
| 63 | add_action('wp_ajax_tutor_quiz_builder_get_question_form', array($this, 'tutor_quiz_builder_get_question_form')); |
| 64 | add_action('wp_ajax_tutor_quiz_modal_update_question', array($this, 'tutor_quiz_modal_update_question')); |
| 65 | add_action('wp_ajax_tutor_quiz_builder_question_delete', array($this, 'tutor_quiz_builder_question_delete')); |
| 66 | add_action('wp_ajax_tutor_quiz_question_answer_editor', array($this, 'tutor_quiz_question_answer_editor')); |
| 67 | add_action('wp_ajax_tutor_save_quiz_answer_options', array($this, 'tutor_save_quiz_answer_options'), 10, 0); |
| 68 | add_action('wp_ajax_tutor_update_quiz_answer_options', array($this, 'tutor_update_quiz_answer_options')); |
| 69 | add_action('wp_ajax_tutor_quiz_builder_change_type', array($this, 'tutor_quiz_builder_change_type')); |
| 70 | add_action('wp_ajax_tutor_quiz_builder_delete_answer', array($this, 'tutor_quiz_builder_delete_answer')); |
| 71 | add_action('wp_ajax_tutor_quiz_question_sorting', array($this, 'tutor_quiz_question_sorting')); |
| 72 | add_action('wp_ajax_tutor_quiz_answer_sorting', array($this, 'tutor_quiz_answer_sorting')); |
| 73 | add_action('wp_ajax_tutor_mark_answer_as_correct', array($this, 'tutor_mark_answer_as_correct')); |
| 74 | |
| 75 | /** |
| 76 | * Frontend Stuff |
| 77 | */ |
| 78 | add_action( 'wp_ajax_tutor_render_quiz_content', array( $this, 'tutor_render_quiz_content' ) ); |
| 79 | |
| 80 | /** |
| 81 | * Quiz abandon action |
| 82 | * |
| 83 | * @since 1.9.6 |
| 84 | */ |
| 85 | add_action( 'wp_ajax_tutor_quiz_abandon', array( $this, 'tutor_quiz_abandon' ) ); |
| 86 | |
| 87 | $this->prepare_allowed_html(); |
| 88 | } |
| 89 | |
| 90 | private function prepare_allowed_html() { |
| 91 | |
| 92 | $allowed = array(); |
| 93 | |
| 94 | foreach ( $this->allowed_html as $tag ) { |
| 95 | $allowed[ $tag ] = $this->allowed_attributes; |
| 96 | } |
| 97 | |
| 98 | $this->allowed_html = $allowed; |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Instructor feedback ajax request handler |
| 103 | * |
| 104 | * @return void | send json response |
| 105 | */ |
| 106 | public function tutor_instructor_feedback() { |
| 107 | tutor_utils()->checking_nonce(); |
| 108 | $attempt_details = self::attempt_details( $_POST['attempt_id'] ); |
| 109 | $feedback = wp_kses_post( $_POST['feedback'] ); |
| 110 | $attempt_info = isset( $attempt_details->attempt_info ) ? $attempt_details->attempt_info : false; |
| 111 | if ( $attempt_info ) { |
| 112 | $unserialized = unserialize( $attempt_details->attempt_info ); |
| 113 | if ( is_array( $unserialized ) ) { |
| 114 | $unserialized['instructor_feedback'] = $feedback; |
| 115 | |
| 116 | do_action( 'tutor_quiz/attempt/submitted/feedback', $attempt_details->attempt_id ); |
| 117 | |
| 118 | $update = self::update_attempt_info( $attempt_details->attempt_id, serialize( $unserialized ) ); |
| 119 | if ( $update ) { |
| 120 | wp_send_json_success(); |
| 121 | } else { |
| 122 | wp_send_json_error(); |
| 123 | } |
| 124 | } else { |
| 125 | wp_send_json_error( __( 'Invalid quiz info' ) ); |
| 126 | } |
| 127 | } |
| 128 | wp_send_json_error(); |
| 129 | } |
| 130 | |
| 131 | public function save_quiz_meta( $post_ID ) { |
| 132 | if ( isset( $_POST['quiz_option'] ) ) { |
| 133 | $quiz_option = tutor_utils()->sanitize_array( $_POST['quiz_option'] ); |
| 134 | update_post_meta( $post_ID, 'tutor_quiz_option', $quiz_option ); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | public function remove_quiz_from_post(){ |
| 139 | tutor_utils()->checking_nonce(); |
| 140 | |
| 141 | global $wpdb; |
| 142 | $quiz_id = (int) tutor_utils()->avalue_dot( 'quiz_id', tutor_sanitize_data($_POST) ); |
| 143 | |
| 144 | if(!tutor_utils()->can_user_manage('quiz', $quiz_id)) { |
| 145 | wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) ); |
| 146 | } |
| 147 | |
| 148 | $wpdb->update( $wpdb->posts, array( 'post_parent' => 0 ), array( 'ID' => $quiz_id ) ); |
| 149 | wp_send_json_success(); |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * |
| 154 | * Start Quiz from here... |
| 155 | * |
| 156 | * @since v.1.0.0 |
| 157 | */ |
| 158 | |
| 159 | public function start_the_quiz() { |
| 160 | if ( ! isset( $_POST['tutor_action'] ) || $_POST['tutor_action'] !== 'tutor_start_quiz' ) { |
| 161 | return; |
| 162 | } |
| 163 | // Checking nonce |
| 164 | tutor_utils()->checking_nonce(); |
| 165 | |
| 166 | if ( ! is_user_logged_in() ) { |
| 167 | // TODO: need to set a view in the next version |
| 168 | die( 'Please sign in to do this operation' ); |
| 169 | } |
| 170 | |
| 171 | global $wpdb; |
| 172 | |
| 173 | $user_id = get_current_user_id(); |
| 174 | $user = get_userdata( $user_id ); |
| 175 | |
| 176 | $quiz_id = (int) $_POST['quiz_id']; |
| 177 | |
| 178 | $quiz = get_post( $quiz_id ); |
| 179 | $course = tutor_utils()->get_course_by_quiz( $quiz_id ); |
| 180 | if ( empty( $course->ID ) ) { |
| 181 | die( 'There is something went wrong with course, please check if quiz attached with a course' ); |
| 182 | } |
| 183 | |
| 184 | do_action( 'tutor_quiz/start/before', $quiz_id, $user_id ); |
| 185 | |
| 186 | $date = date( 'Y-m-d H:i:s', tutor_time() ); |
| 187 | |
| 188 | $tutor_quiz_option = (array) maybe_unserialize( get_post_meta( $quiz_id, 'tutor_quiz_option', true ) ); |
| 189 | $attempts_allowed = tutor_utils()->get_quiz_option( $quiz_id, 'attempts_allowed', 0 ); |
| 190 | |
| 191 | $time_limit = tutor_utils()->get_quiz_option( $quiz_id, 'time_limit.time_value' ); |
| 192 | $time_limit_seconds = 0; |
| 193 | $time_type = 'seconds'; |
| 194 | if ( $time_limit ) { |
| 195 | $time_type = tutor_utils()->get_quiz_option( $quiz_id, 'time_limit.time_type' ); |
| 196 | |
| 197 | switch ( $time_type ) { |
| 198 | case 'seconds': |
| 199 | $time_limit_seconds = $time_limit; |
| 200 | break; |
| 201 | case 'minutes': |
| 202 | $time_limit_seconds = $time_limit * 60; |
| 203 | break; |
| 204 | case 'hours': |
| 205 | $time_limit_seconds = $time_limit * 60 * 60; |
| 206 | break; |
| 207 | case 'days': |
| 208 | $time_limit_seconds = $time_limit * 60 * 60 * 24; |
| 209 | break; |
| 210 | case 'weeks': |
| 211 | $time_limit_seconds = $time_limit * 60 * 60 * 24 * 7; |
| 212 | break; |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | $max_question_allowed = tutor_utils()->max_questions_for_take_quiz( $quiz_id ); |
| 217 | $tutor_quiz_option['time_limit']['time_limit_seconds'] = $time_limit_seconds; |
| 218 | |
| 219 | $attempt_data = array( |
| 220 | 'course_id' => $course->ID, |
| 221 | 'quiz_id' => $quiz_id, |
| 222 | 'user_id' => $user_id, |
| 223 | 'total_questions' => $max_question_allowed, |
| 224 | 'total_answered_questions' => 0, |
| 225 | 'attempt_info' => maybe_serialize( $tutor_quiz_option ), |
| 226 | 'attempt_status' => 'attempt_started', |
| 227 | 'attempt_ip' => tutor_utils()->get_ip(), |
| 228 | 'attempt_started_at' => $date, |
| 229 | ); |
| 230 | |
| 231 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_data ); |
| 232 | $attempt_id = (int) $wpdb->insert_id; |
| 233 | |
| 234 | do_action( 'tutor_quiz/start/after', $quiz_id, $user_id, $attempt_id ); |
| 235 | |
| 236 | wp_redirect( get_permalink( $quiz_id ) ); |
| 237 | die(); |
| 238 | } |
| 239 | |
| 240 | public function answering_quiz() { |
| 241 | |
| 242 | if ( tutor_utils()->array_get('tutor_action', $_POST) !== 'tutor_answering_quiz_question' ){ |
| 243 | return; |
| 244 | } |
| 245 | // submit quiz attempts |
| 246 | self::tutor_quiz_attemp_submit(); |
| 247 | |
| 248 | wp_redirect( get_the_permalink() ); |
| 249 | die(); |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * Quiz abandon submission handler |
| 254 | * |
| 255 | * @return JSON response |
| 256 | * |
| 257 | * @since 1.9.6 |
| 258 | */ |
| 259 | public function tutor_quiz_abandon(){ |
| 260 | if ( tutor_utils()->array_get('tutor_action', $_POST) !== 'tutor_answering_quiz_question' ){ |
| 261 | return; |
| 262 | } |
| 263 | // submit quiz attempts |
| 264 | if ( self::tutor_quiz_attemp_submit() ) { |
| 265 | wp_send_json_success(); |
| 266 | } else { |
| 267 | wp_send_json_error(); |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | /** |
| 272 | * This is a unified method for handling normal quiz submit or abandon submit |
| 273 | * |
| 274 | * It will handle ajax or normal form submit and can be used with different hooks |
| 275 | * |
| 276 | * @return true | false |
| 277 | * |
| 278 | * @since 1.9.6 |
| 279 | */ |
| 280 | public static function tutor_quiz_attemp_submit() { |
| 281 | |
| 282 | // Check logged in |
| 283 | if ( ! is_user_logged_in() ) { |
| 284 | die( 'Please sign in to do this operation' ); |
| 285 | } |
| 286 | |
| 287 | // Check nonce |
| 288 | tutor_utils()->checking_nonce(); |
| 289 | |
| 290 | // Prepare attempt info |
| 291 | global $wpdb; |
| 292 | $user_id = get_current_user_id(); |
| 293 | $attempt_id = (int) tutor_utils()->avalue_dot( 'attempt_id', $_POST ); |
| 294 | $attempt = tutor_utils()->get_attempt( $attempt_id ); |
| 295 | $course_id = tutor_utils()->get_course_by_quiz( $attempt->quiz_id )->ID; |
| 296 | $attempt_answers = isset( $_POST['attempt'] ) ? tutor_sanitize_data( $_POST['attempt'] ) : false; |
| 297 | $attempt_answers = is_array($attempt_answers) ? $attempt_answers : array(); |
| 298 | |
| 299 | // Check if has access to the attempt |
| 300 | if ( ! $attempt || $user_id != $attempt->user_id ) { |
| 301 | die( 'Operation not allowed, attempt not found or permission denied' ); |
| 302 | } |
| 303 | |
| 304 | // Before ook |
| 305 | do_action( 'tutor_quiz/attempt_analysing/before', $attempt_id ); |
| 306 | |
| 307 | // Loop through every single attempt answer |
| 308 | // Single quiz can have multiple question. So multiple answer should be saved |
| 309 | foreach ( $attempt_answers as $attempt_id => $attempt_answer ) { |
| 310 | |
| 311 | /** |
| 312 | * Get total marks of all question comes |
| 313 | */ |
| 314 | $question_ids = tutor_utils()->avalue_dot( 'quiz_question_ids', $attempt_answer ); |
| 315 | $question_ids = array_filter($question_ids, function($id){ |
| 316 | return (int)$id; |
| 317 | }); |
| 318 | |
| 319 | // Calculate and set the total marks in attempt table for this question |
| 320 | if ( is_array( $question_ids ) && count( $question_ids ) ) { |
| 321 | $question_ids_string = implode(',', $question_ids ); |
| 322 | |
| 323 | // Get total marks of the questions from question table |
| 324 | $total_question_marks = $wpdb->get_var( |
| 325 | "SELECT SUM(question_mark) |
| 326 | FROM {$wpdb->prefix}tutor_quiz_questions |
| 327 | WHERE question_id IN({$question_ids_string});" |
| 328 | ); |
| 329 | |
| 330 | // Set the the total mark in the attempt table for the question |
| 331 | $wpdb->update( |
| 332 | $wpdb->prefix . 'tutor_quiz_attempts', |
| 333 | array( 'total_marks' => $total_question_marks ), |
| 334 | array( 'attempt_id' => $attempt_id ) |
| 335 | ); |
| 336 | } |
| 337 | |
| 338 | $total_marks = 0; |
| 339 | $review_required = false; |
| 340 | $quiz_answers = tutor_utils()->avalue_dot( 'quiz_question', $attempt_answer ); |
| 341 | |
| 342 | if ( tutor_utils()->count($quiz_answers)) { |
| 343 | |
| 344 | foreach ( $quiz_answers as $question_id => $answers ) { |
| 345 | $question = tutor_utils()->get_quiz_question_by_id( $question_id ); |
| 346 | $question_type = $question->question_type; |
| 347 | |
| 348 | $is_answer_was_correct = false; |
| 349 | $given_answer = ''; |
| 350 | |
| 351 | if ( $question_type === 'true_false' || $question_type === 'single_choice' ) { |
| 352 | |
| 353 | if ( ! is_numeric( $answers ) || ! $answers ) { |
| 354 | wp_send_json_error(); |
| 355 | exit; |
| 356 | } |
| 357 | |
| 358 | $given_answer = $answers; |
| 359 | $is_answer_was_correct = (bool) $wpdb->get_var( $wpdb->prepare( |
| 360 | "SELECT is_correct |
| 361 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 362 | WHERE answer_id = %d ", |
| 363 | $answers |
| 364 | ) ); |
| 365 | |
| 366 | } elseif ( $question_type === 'multiple_choice' ) { |
| 367 | |
| 368 | $given_answer = (array) ( $answers ); |
| 369 | |
| 370 | $given_answer = array_filter( $given_answer, function($id) { |
| 371 | return is_numeric($id) && $id>0; |
| 372 | } ); |
| 373 | $get_original_answers = (array) $wpdb->get_col($wpdb->prepare( |
| 374 | "SELECT |
| 375 | answer_id |
| 376 | FROM |
| 377 | {$wpdb->prefix}tutor_quiz_question_answers |
| 378 | WHERE belongs_question_id = %d |
| 379 | AND belongs_question_type = %s |
| 380 | AND is_correct = 1 ; |
| 381 | ", |
| 382 | $question->question_id, |
| 383 | $question_type |
| 384 | ) |
| 385 | ); |
| 386 | |
| 387 | if ( count( array_diff( $get_original_answers, $given_answer ) ) === 0 && count( $get_original_answers ) === count( $given_answer ) ) { |
| 388 | $is_answer_was_correct = true; |
| 389 | } |
| 390 | $given_answer = maybe_serialize( $answers ); |
| 391 | |
| 392 | } elseif ( $question_type === 'fill_in_the_blank' ) { |
| 393 | |
| 394 | $given_answer = (array) array_map( 'sanitize_text_field', $answers ); |
| 395 | $given_answer = maybe_serialize( $given_answer ); |
| 396 | |
| 397 | $get_original_answer = $wpdb->get_row( $wpdb->prepare( |
| 398 | "SELECT * FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 399 | WHERE belongs_question_id = %d |
| 400 | AND belongs_question_type = %s ;", |
| 401 | $question->question_id, |
| 402 | $question_type |
| 403 | ) ); |
| 404 | |
| 405 | $gap_answer = (array) explode( '|', $get_original_answer->answer_two_gap_match ); |
| 406 | |
| 407 | $gap_answer = array_map( 'sanitize_text_field', $gap_answer ); |
| 408 | if ( strtolower( $given_answer ) == strtolower( maybe_serialize( $gap_answer ) ) ) { |
| 409 | $is_answer_was_correct = true; |
| 410 | } |
| 411 | } elseif ( $question_type === 'open_ended' || $question_type === 'short_answer' ) { |
| 412 | $review_required = true; |
| 413 | $given_answer = wp_kses_post( $answers ); |
| 414 | |
| 415 | } elseif ( $question_type === 'ordering' || $question_type === 'matching' || $question_type === 'image_matching' ) { |
| 416 | |
| 417 | $given_answer = (array) array_map( 'sanitize_text_field', tutor_utils()->avalue_dot( 'answers', $answers ) ); |
| 418 | $given_answer = maybe_serialize( $given_answer ); |
| 419 | |
| 420 | $get_original_answers = (array) $wpdb->get_col( |
| 421 | $wpdb->prepare( |
| 422 | "SELECT answer_id |
| 423 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 424 | WHERE belongs_question_id = %d AND belongs_question_type = %s ORDER BY answer_order ASC ;", |
| 425 | $question->question_id, |
| 426 | $question_type |
| 427 | ) |
| 428 | ); |
| 429 | |
| 430 | $get_original_answers = array_map( 'sanitize_text_field', $get_original_answers ); |
| 431 | |
| 432 | if ( $given_answer == maybe_serialize( $get_original_answers ) ) { |
| 433 | $is_answer_was_correct = true; |
| 434 | } |
| 435 | } elseif ( $question_type === 'image_answering' ) { |
| 436 | $image_inputs = tutor_utils()->avalue_dot( 'answer_id', $answers ); |
| 437 | $image_inputs = (array) array_map( 'sanitize_text_field', $image_inputs ); |
| 438 | $given_answer = maybe_serialize( $image_inputs ); |
| 439 | $is_answer_was_correct = false; |
| 440 | |
| 441 | $db_answer = $wpdb->get_col( |
| 442 | $wpdb->prepare( |
| 443 | "SELECT answer_title |
| 444 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 445 | WHERE belongs_question_id = %d |
| 446 | AND belongs_question_type = 'image_answering' |
| 447 | ORDER BY answer_order asc ;", |
| 448 | $question_id |
| 449 | ) |
| 450 | ); |
| 451 | |
| 452 | if ( is_array( $db_answer ) && count( $db_answer ) ) { |
| 453 | $is_answer_was_correct = ( strtolower( maybe_serialize( array_values( $image_inputs ) ) ) == strtolower( maybe_serialize( $db_answer ) ) ); |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | $question_mark = $is_answer_was_correct ? $question->question_mark : 0; |
| 458 | $total_marks += $question_mark; |
| 459 | |
| 460 | $answers_data = array( |
| 461 | 'user_id' => $user_id, |
| 462 | 'quiz_id' => $attempt->quiz_id, |
| 463 | 'question_id' => $question_id, |
| 464 | 'quiz_attempt_id' => $attempt_id, |
| 465 | 'given_answer' => $given_answer, |
| 466 | 'question_mark' => $question->question_mark, |
| 467 | 'achieved_mark' => $question_mark, |
| 468 | 'minus_mark' => 0, |
| 469 | 'is_correct' => $is_answer_was_correct ? 1 : 0, |
| 470 | ); |
| 471 | |
| 472 | /* |
| 473 | check if question_type open ended or short ans the set is_correct default value null before saving |
| 474 | */ |
| 475 | if ( in_array($question_type, array('open_ended', 'short_answer', 'image_answering'))) { |
| 476 | $answers_data['is_correct'] = null; |
| 477 | } |
| 478 | |
| 479 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answers_data ); |
| 480 | $review_required = true; |
| 481 | } |
| 482 | } |
| 483 | |
| 484 | $attempt_info = array( |
| 485 | 'total_answered_questions' => tutor_utils()->count($quiz_answers), |
| 486 | 'earned_marks' => $total_marks, |
| 487 | 'attempt_status' => 'attempt_ended', |
| 488 | 'attempt_ended_at' => date("Y-m-d H:i:s", tutor_time()), |
| 489 | ); |
| 490 | |
| 491 | if ($review_required){ |
| 492 | $attempt_info['attempt_status'] = 'review_required'; |
| 493 | } |
| 494 | |
| 495 | $wpdb->update($wpdb->prefix.'tutor_quiz_attempts', $attempt_info, array('attempt_id' => $attempt_id)); |
| 496 | } |
| 497 | |
| 498 | // After hook |
| 499 | do_action('tutor_quiz/attempt_ended', $attempt_id, $course_id, $user_id); |
| 500 | |
| 501 | return true; |
| 502 | } |
| 503 | |
| 504 | |
| 505 | /** |
| 506 | * Quiz attempt will be finish here |
| 507 | */ |
| 508 | |
| 509 | public function finishing_quiz_attempt() { |
| 510 | |
| 511 | if ( ! isset( $_POST['tutor_action'] ) || $_POST['tutor_action'] !== 'tutor_finish_quiz_attempt' ) { |
| 512 | return; |
| 513 | } |
| 514 | // Checking nonce |
| 515 | tutor_utils()->checking_nonce(); |
| 516 | |
| 517 | if ( ! is_user_logged_in() ) { |
| 518 | die( 'Please sign in to do this operation' ); |
| 519 | } |
| 520 | |
| 521 | global $wpdb; |
| 522 | |
| 523 | $quiz_id = (int) $_POST['quiz_id']; |
| 524 | $attempt = tutor_utils()->is_started_quiz( $quiz_id ); |
| 525 | $attempt_id = $attempt->attempt_id; |
| 526 | |
| 527 | $attempt_info = array( |
| 528 | 'total_answered_questions' => 0, |
| 529 | 'earned_marks' => 0, |
| 530 | 'attempt_status' => 'attempt_ended', |
| 531 | 'attempt_ended_at' => date( 'Y-m-d H:i:s', tutor_time() ), |
| 532 | ); |
| 533 | |
| 534 | do_action( 'tutor_quiz_before_finish', $attempt_id, $quiz_id, $attempt->user_id ); |
| 535 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_info, array( 'attempt_id' => $attempt_id ) ); |
| 536 | do_action( 'tutor_quiz_finished', $attempt_id, $quiz_id, $attempt->user_id ); |
| 537 | |
| 538 | wp_redirect( tutor_utils()->input_old( '_wp_http_referer' ) ); |
| 539 | } |
| 540 | |
| 541 | /** |
| 542 | * Quiz timeout by ajax |
| 543 | */ |
| 544 | public function tutor_quiz_timeout() { |
| 545 | tutils()->checking_nonce(); |
| 546 | |
| 547 | global $wpdb; |
| 548 | |
| 549 | $quiz_id = (int) $_POST['quiz_id']; |
| 550 | |
| 551 | // if(!tutor_utils()->can_user_manage('quiz', $quiz_id)) { |
| 552 | // wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) ); |
| 553 | // } |
| 554 | |
| 555 | $attempt = tutor_utils()->is_started_quiz( $quiz_id ); |
| 556 | |
| 557 | if ( $attempt ) { |
| 558 | $attempt_id = $attempt->attempt_id; |
| 559 | |
| 560 | $data = array( |
| 561 | 'attempt_status' => 'attempt_timeout', |
| 562 | 'attempt_ended_at' => date( 'Y-m-d H:i:s', tutor_time() ), |
| 563 | ); |
| 564 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $data, array( 'attempt_id' => $attempt->attempt_id ) ); |
| 565 | |
| 566 | do_action( 'tutor_quiz_timeout', $attempt_id, $quiz_id, $attempt->user_id ); |
| 567 | |
| 568 | wp_send_json_success(); |
| 569 | } |
| 570 | |
| 571 | wp_send_json_error( __( 'Quiz has been timeout already', 'tutor' ) ); |
| 572 | } |
| 573 | |
| 574 | /** |
| 575 | * Review the answer and change individual answer result |
| 576 | */ |
| 577 | |
| 578 | public function review_quiz_answer() { |
| 579 | |
| 580 | tutor_utils()->checking_nonce(); |
| 581 | |
| 582 | global $wpdb; |
| 583 | |
| 584 | $attempt_id = (int) sanitize_text_field($_POST['attempt_id']); |
| 585 | $context = sanitize_text_field($_POST['context']); |
| 586 | $attempt_answer_id = (int) sanitize_text_field($_POST['attempt_answer_id']); |
| 587 | $mark_as = sanitize_text_field($_POST['mark_as']); |
| 588 | |
| 589 | if(!tutor_utils()->can_user_manage('attempt', $attempt_id) || !tutor_utils()->can_user_manage('attempt_answer', $attempt_answer_id)) { |
| 590 | wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) ); |
| 591 | } |
| 592 | |
| 593 | $attempt_answer = $wpdb->get_row( |
| 594 | $wpdb->prepare( |
| 595 | "SELECT * FROM {$wpdb->prefix}tutor_quiz_attempt_answers |
| 596 | WHERE attempt_answer_id = %d ", |
| 597 | $attempt_answer_id |
| 598 | ) |
| 599 | ); |
| 600 | |
| 601 | $attempt = tutor_utils()->get_attempt($attempt_id); |
| 602 | $question = tutor_utils()->get_quiz_question_by_id($attempt_answer->question_id); |
| 603 | $course_id = $attempt->course_id; |
| 604 | $student_id = $attempt->user_id; |
| 605 | $previous_ans = $attempt_answer->is_correct; |
| 606 | |
| 607 | do_action( 'tutor_quiz_review_answer_before', $attempt_answer_id, $attempt_id, $mark_as ); |
| 608 | |
| 609 | if ( $mark_as === 'correct' ) { |
| 610 | |
| 611 | $answer_update_data = array( |
| 612 | 'achieved_mark' => $attempt_answer->question_mark, |
| 613 | 'is_correct' => 1, |
| 614 | ); |
| 615 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answer_update_data, array( 'attempt_answer_id' => $attempt_answer_id ) ); |
| 616 | if ( $previous_ans == 0 or $previous_ans == null ) { |
| 617 | |
| 618 | // if previous answer was wrong or in review then add point as correct |
| 619 | $attempt_update_data = array( |
| 620 | 'earned_marks' => $attempt->earned_marks + $attempt_answer->question_mark, |
| 621 | 'is_manually_reviewed' => 1, |
| 622 | 'manually_reviewed_at' => date( 'Y-m-d H:i:s', tutor_time() ), |
| 623 | ); |
| 624 | } |
| 625 | |
| 626 | if ($question->question_type === 'open_ended' || $question->question_type === 'short_answer' ){ |
| 627 | $attempt_update_data['attempt_status'] = 'attempt_ended'; |
| 628 | } |
| 629 | $wpdb->update($wpdb->prefix.'tutor_quiz_attempts', $attempt_update_data, array('attempt_id' => $attempt_id )); |
| 630 | |
| 631 | } elseif($mark_as === 'incorrect') { |
| 632 | |
| 633 | $answer_update_data = array( |
| 634 | 'achieved_mark' => '0.00', |
| 635 | 'is_correct' => 0, |
| 636 | ); |
| 637 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answer_update_data, array( 'attempt_answer_id' => $attempt_answer_id ) ); |
| 638 | |
| 639 | if ( $previous_ans == 1 ) { |
| 640 | |
| 641 | // if previous ans was right then mynus |
| 642 | $attempt_update_data = array( |
| 643 | 'earned_marks' => $attempt->earned_marks - $attempt_answer->question_mark, |
| 644 | 'is_manually_reviewed' => 1, |
| 645 | 'manually_reviewed_at' => date( 'Y-m-d H:i:s', tutor_time() ), |
| 646 | ); |
| 647 | |
| 648 | } |
| 649 | if ( $question->question_type === 'open_ended' || $question->question_type === 'short_answer' ) { |
| 650 | $attempt_update_data['attempt_status'] = 'attempt_ended'; |
| 651 | } |
| 652 | |
| 653 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_update_data, array( 'attempt_id' => $attempt_id ) ); |
| 654 | } |
| 655 | do_action('tutor_quiz_review_answer_after', $attempt_answer_id, $attempt_id, $mark_as); |
| 656 | do_action('tutor_quiz/answer/review/after', $attempt_answer_id, $course_id, $student_id); |
| 657 | |
| 658 | ob_start(); |
| 659 | tutor_load_template_from_custom_path(tutor()->path . '/views/quiz/attempt-details.php', array( |
| 660 | 'attempt_id' => $attempt_id, |
| 661 | 'user_id' => $student_id, |
| 662 | 'context' => $context, |
| 663 | 'back_url' => isset($_POST['back_url']) ? esc_url( $_POST['back_url'] ) : null |
| 664 | )); |
| 665 | wp_send_json_success( array('html' => ob_get_clean()) ); |
| 666 | } |
| 667 | |
| 668 | /** |
| 669 | * Save single quiz into database and send html response |
| 670 | */ |
| 671 | public function tutor_quiz_save(){ |
| 672 | |
| 673 | tutor_utils()->checking_nonce(); |
| 674 | |
| 675 | // Prepare args |
| 676 | $topic_id = sanitize_text_field($_POST['topic_id']); |
| 677 | $ex_quiz_id = isset($_POST['quiz_id']) ? sanitize_text_field($_POST['quiz_id']) : 0; |
| 678 | $quiz_title = sanitize_text_field($_POST['quiz_title']); |
| 679 | $quiz_description = wp_kses( $_POST['quiz_description'], $this->allowed_html ); |
| 680 | $next_order_id = tutor_utils()->get_next_course_content_order_id($topic_id, $ex_quiz_id); |
| 681 | |
| 682 | // Check edit privilege |
| 683 | if(!tutor_utils()->can_user_manage('topic', $topic_id)) { |
| 684 | wp_send_json_error( array( |
| 685 | 'message'=>__('Access Denied', 'tutor'), |
| 686 | 'data'=>$_POST |
| 687 | )); |
| 688 | } |
| 689 | |
| 690 | // Prepare quiz data to save in database |
| 691 | $post_arr = array( |
| 692 | 'ID' => $ex_quiz_id, |
| 693 | 'post_type' => 'tutor_quiz', |
| 694 | 'post_title' => $quiz_title, |
| 695 | 'post_content' => $quiz_description, |
| 696 | 'post_status' => 'publish', |
| 697 | 'post_author' => get_current_user_id(), |
| 698 | 'post_parent' => $topic_id, |
| 699 | 'menu_order' => $next_order_id, |
| 700 | ); |
| 701 | |
| 702 | // Insert quiz and run hook |
| 703 | $quiz_id = wp_insert_post( $post_arr ); |
| 704 | do_action(($ex_quiz_id ? 'tutor_quiz_updated' : 'tutor_initial_quiz_created'), $quiz_id); |
| 705 | |
| 706 | // Now save quiz settings |
| 707 | $quiz_option = tutor_utils()->sanitize_array( $_POST['quiz_option'] ); |
| 708 | update_post_meta($quiz_id, 'tutor_quiz_option', $quiz_option); |
| 709 | do_action('tutor_quiz_settings_updated', $quiz_id); |
| 710 | |
| 711 | // Generate quiz modal to show in modal |
| 712 | $output = $this->tutor_load_quiz_builder_modal(array( |
| 713 | 'topic_id'=> $topic_id, |
| 714 | 'quiz_id'=>$quiz_id |
| 715 | ), true); |
| 716 | |
| 717 | // Generate quiz list to show under topic as sub list |
| 718 | ob_start(); |
| 719 | tutor_load_template_from_custom_path(tutor()->path.'/views/fragments/quiz-list-single.php', array( |
| 720 | 'quiz_id' => $quiz_id, |
| 721 | 'topic_id' => $topic_id, |
| 722 | 'quiz_title' => $quiz_title, |
| 723 | ), false); |
| 724 | $output_quiz_row = ob_get_clean(); |
| 725 | |
| 726 | wp_send_json_success(array( |
| 727 | 'output' => $output, |
| 728 | 'output_quiz_row' => $output_quiz_row |
| 729 | )); |
| 730 | } |
| 731 | |
| 732 | public function tutor_delete_quiz_by_id(){ |
| 733 | tutor_utils()->checking_nonce(); |
| 734 | |
| 735 | global $wpdb; |
| 736 | |
| 737 | $quiz_id = (int) $_POST['quiz_id']; |
| 738 | $post = get_post( $quiz_id ); |
| 739 | |
| 740 | if ( ! tutils()->can_user_manage( 'quiz', $quiz_id ) ) { |
| 741 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 742 | } |
| 743 | |
| 744 | if ( $post->post_type === 'tutor_quiz' ) { |
| 745 | do_action( 'tutor_delete_quiz_before', $quiz_id ); |
| 746 | |
| 747 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_attempts', array( 'quiz_id' => $quiz_id ) ); |
| 748 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_attempt_answers', array( 'quiz_id' => $quiz_id ) ); |
| 749 | |
| 750 | $questions_ids = $wpdb->get_col( $wpdb->prepare( "SELECT question_id FROM {$wpdb->prefix}tutor_quiz_questions WHERE quiz_id = %d ", $quiz_id ) ); |
| 751 | |
| 752 | if ( is_array( $questions_ids ) && count( $questions_ids ) ) { |
| 753 | $in_question_ids = "'" . implode( "','", $questions_ids ) . "'"; |
| 754 | $wpdb->query( "DELETE FROM {$wpdb->prefix}tutor_quiz_question_answers WHERE belongs_question_id IN({$in_question_ids}) " ); |
| 755 | } |
| 756 | |
| 757 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_questions', array( 'quiz_id' => $quiz_id ) ); |
| 758 | |
| 759 | wp_delete_post( $quiz_id, true ); |
| 760 | |
| 761 | do_action( 'tutor_delete_quiz_after', $quiz_id ); |
| 762 | |
| 763 | wp_send_json_success(); |
| 764 | } |
| 765 | |
| 766 | wp_send_json_error(); |
| 767 | } |
| 768 | |
| 769 | /** |
| 770 | * Load quiz Modal on add/edit click |
| 771 | * |
| 772 | * @since v.1.0.0 |
| 773 | */ |
| 774 | public function tutor_load_quiz_builder_modal($params=array(), $ret=false){ |
| 775 | tutor_utils()->checking_nonce(); |
| 776 | |
| 777 | $data = array_merge($_POST, $params); |
| 778 | $quiz_id = isset($data['quiz_id']) ? sanitize_text_field ($data['quiz_id']) : 0; |
| 779 | $topic_id = isset($data['topic_id'])?sanitize_text_field( $data['topic_id'] ):0; |
| 780 | $quiz = $quiz_id ? get_post($quiz_id) : null; |
| 781 | |
| 782 | if($quiz_id && !tutor_utils()->can_user_manage('quiz', $quiz_id)) { |
| 783 | wp_send_json_error( array('message'=>__('Quiz Permission Denied', 'tutor')) ); |
| 784 | } |
| 785 | |
| 786 | ob_start(); |
| 787 | include tutor()->path . 'views/modal/edit_quiz.php'; |
| 788 | $output = ob_get_clean(); |
| 789 | |
| 790 | if($ret) { |
| 791 | return $output; |
| 792 | } |
| 793 | |
| 794 | wp_send_json_success(array('output' => $output)); |
| 795 | } |
| 796 | |
| 797 | /** |
| 798 | * Load quiz question form for quiz |
| 799 | * |
| 800 | * @since v.1.0.0 |
| 801 | */ |
| 802 | public function tutor_quiz_builder_get_question_form(){ |
| 803 | tutor_utils()->checking_nonce(); |
| 804 | |
| 805 | global $wpdb; |
| 806 | $quiz_id = sanitize_text_field($_POST['quiz_id']); |
| 807 | $topic_id = isset( $_POST['topic_id'] ) ? (int)$_POST['topic_id'] : 0; |
| 808 | $question_id = sanitize_text_field(tutor_utils()->avalue_dot('question_id', $_POST)); |
| 809 | |
| 810 | // check if the user can manage the quiz |
| 811 | if(!tutor_utils()->can_user_manage('quiz', $quiz_id)) { |
| 812 | wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) ); |
| 813 | } |
| 814 | |
| 815 | // If question ID not provided, then create new before rendering the form |
| 816 | if ( ! $question_id){ |
| 817 | $next_question_id = tutor_utils()->quiz_next_question_id(); |
| 818 | $next_question_order = tutor_utils()->quiz_next_question_order_id($quiz_id); |
| 819 | $question_title = __('Question', 'tutor').' '.$next_question_id; |
| 820 | |
| 821 | $new_question_data = array( |
| 822 | 'quiz_id' => $quiz_id, |
| 823 | 'question_title' => $question_title, |
| 824 | 'question_description' => '', |
| 825 | 'question_type' => 'true_false', |
| 826 | 'question_mark' => 1, |
| 827 | 'question_settings' => maybe_serialize(array()), |
| 828 | 'question_order' => esc_sql( $next_question_order ) , |
| 829 | ); |
| 830 | |
| 831 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_questions', $new_question_data ); |
| 832 | $question_id = $wpdb->insert_id; |
| 833 | |
| 834 | |
| 835 | |
| 836 | // Add default true/false options for this question since it is by default true/false type. |
| 837 | $question_array = array( |
| 838 | $question_id => array( |
| 839 | 'Question' => $question_title, |
| 840 | 'question_type' => 'true_false', |
| 841 | 'question_mark' => '1.00', |
| 842 | 'question_description' => '', |
| 843 | ) |
| 844 | ); |
| 845 | |
| 846 | $answer_array = array( |
| 847 | $question_id=>array( |
| 848 | 'true_false' => true |
| 849 | ) |
| 850 | ); |
| 851 | |
| 852 | $this->tutor_save_quiz_answer_options($question_array, $answer_array, false); |
| 853 | } |
| 854 | |
| 855 | // Now get all data by this question id |
| 856 | $question = $wpdb->get_row($wpdb->prepare( |
| 857 | "SELECT * FROM {$wpdb->prefix}tutor_quiz_questions |
| 858 | WHERE question_id = %d ", |
| 859 | $question_id |
| 860 | )); |
| 861 | |
| 862 | // Render the question form finally |
| 863 | ob_start(); |
| 864 | require tutor()->path.'views/modal/question_form.php'; |
| 865 | $output = ob_get_clean(); |
| 866 | |
| 867 | wp_send_json_success( array( 'output' => $output ) ); |
| 868 | } |
| 869 | |
| 870 | public function tutor_quiz_modal_update_question(){ |
| 871 | tutor_utils()->checking_nonce(); |
| 872 | |
| 873 | global $wpdb; |
| 874 | $question_data = $_POST['tutor_quiz_question']; |
| 875 | $requires_answeres = array( |
| 876 | 'multiple_choice', |
| 877 | 'single_choice', |
| 878 | 'true_false', |
| 879 | 'fill_in_the_blank', |
| 880 | 'matching', |
| 881 | 'image_matching', |
| 882 | 'image_answering', |
| 883 | 'ordering' |
| 884 | ); |
| 885 | |
| 886 | $need_correct = array( |
| 887 | 'multiple_choice', |
| 888 | 'single_choice', |
| 889 | 'true_false' |
| 890 | ); |
| 891 | |
| 892 | foreach ( $question_data as $question_id => $question ) { |
| 893 | |
| 894 | // Make sure the quiz has answers |
| 895 | if(in_array($question['question_type'], $requires_answeres)) { |
| 896 | $require_correct = in_array($question['question_type'], $need_correct); |
| 897 | $all_answers = $this->get_answers_by_q_id($question_id, $question['question_type']); |
| 898 | $correct_answers = $this->get_answers_by_q_id($question_id, $question['question_type'], $require_correct); |
| 899 | |
| 900 | if(!empty($all_answers) && empty($correct_answers)) { |
| 901 | wp_send_json_error( array('message' => __('Please make sure the question has answer')) ); |
| 902 | exit; |
| 903 | } |
| 904 | } |
| 905 | |
| 906 | if(!tutor_utils()->can_user_manage('question', $question_id)) { |
| 907 | continue; |
| 908 | } |
| 909 | |
| 910 | $question_title = sanitize_text_field( $question['question_title'] ); |
| 911 | $question_description = wp_kses( $question['question_description'], $this->allowed_html ); // sanitize_text_field($question['question_description']); |
| 912 | $question_type = sanitize_text_field( $question['question_type'] ); |
| 913 | $question_mark = sanitize_text_field( $question['question_mark'] ); |
| 914 | |
| 915 | unset( $question['question_title'] ); |
| 916 | unset( $question['question_description'] ); |
| 917 | |
| 918 | $data = array( |
| 919 | 'question_title' => $question_title, |
| 920 | 'question_description' => $question_description, |
| 921 | 'question_type' => $question_type, |
| 922 | 'question_mark' => $question_mark, |
| 923 | 'question_settings' => maybe_serialize( $question ), |
| 924 | ); |
| 925 | |
| 926 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_questions', $data, array( 'question_id' => $question_id ) ); |
| 927 | } |
| 928 | |
| 929 | wp_send_json_success(); |
| 930 | } |
| 931 | |
| 932 | public function tutor_quiz_builder_question_delete(){ |
| 933 | tutor_utils()->checking_nonce(); |
| 934 | |
| 935 | global $wpdb; |
| 936 | |
| 937 | $question_id = sanitize_text_field(tutor_utils()->avalue_dot('question_id', $_POST)); |
| 938 | |
| 939 | if(!tutor_utils()->can_user_manage('question', $question_id)) { |
| 940 | wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) ); |
| 941 | } |
| 942 | |
| 943 | if ( $question_id ) { |
| 944 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_questions', array( 'question_id' => esc_sql( $question_id ) ) ); |
| 945 | } |
| 946 | |
| 947 | wp_send_json_success(); |
| 948 | } |
| 949 | |
| 950 | /** |
| 951 | * Get answers options form for quiz question |
| 952 | * |
| 953 | * @since v.1.0.0 |
| 954 | */ |
| 955 | public function tutor_quiz_question_answer_editor(){ |
| 956 | tutor_utils()->checking_nonce(); |
| 957 | |
| 958 | $question_id = sanitize_text_field($_POST['question_id']); |
| 959 | $answer_id = (int) sanitize_text_field(tutor_utils()->array_get('answer_id', $_POST)); |
| 960 | $question = tutor_utils()->avalue_dot($question_id, $_POST['tutor_quiz_question']); |
| 961 | $question_type = $question['question_type']; |
| 962 | |
| 963 | if(!tutor_utils()->can_user_manage('question', $question_id)) { |
| 964 | wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) ); |
| 965 | } |
| 966 | |
| 967 | if($answer_id) { |
| 968 | $old_answer = tutor_utils()->get_answer_by_id($answer_id); |
| 969 | foreach ($old_answer as $old_answer); |
| 970 | } |
| 971 | |
| 972 | ob_start(); |
| 973 | include tutor()->path.'views/modal/question_answer_form.php'; |
| 974 | $output = ob_get_clean(); |
| 975 | |
| 976 | wp_send_json_success(array('output' => $output)); |
| 977 | } |
| 978 | |
| 979 | public function tutor_save_quiz_answer_options($questions=null, $answers=null, $response=true){ |
| 980 | tutor_utils()->checking_nonce(); |
| 981 | |
| 982 | global $wpdb; |
| 983 | |
| 984 | $questions = $questions ? $questions : $_POST['tutor_quiz_question']; |
| 985 | $answers = $answers ? $answers : $_POST['quiz_answer']; |
| 986 | |
| 987 | foreach ( $answers as $question_id => $answer ) { |
| 988 | |
| 989 | if(!tutor_utils()->can_user_manage('question', $question_id)) { |
| 990 | continue; |
| 991 | } |
| 992 | |
| 993 | $question = tutor_utils()->avalue_dot( $question_id, $questions ); |
| 994 | $question_type = $question['question_type']; |
| 995 | |
| 996 | // Getting next sorting order |
| 997 | $next_order_id = (int) $wpdb->get_var( |
| 998 | $wpdb->prepare( |
| 999 | "SELECT MAX(answer_order) |
| 1000 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 1001 | where belongs_question_id = %d |
| 1002 | AND belongs_question_type = %s ", |
| 1003 | $question_id, |
| 1004 | esc_sql( $question_type ) |
| 1005 | ) |
| 1006 | ); |
| 1007 | |
| 1008 | $next_order_id = $next_order_id + 1; |
| 1009 | |
| 1010 | if ( $question ) { |
| 1011 | if ( $question_type === 'true_false' ) { |
| 1012 | $wpdb->delete( |
| 1013 | $wpdb->prefix . 'tutor_quiz_question_answers', |
| 1014 | array( |
| 1015 | 'belongs_question_id' => $question_id, |
| 1016 | 'belongs_question_type' => $question_type, |
| 1017 | ) |
| 1018 | ); |
| 1019 | $data_true_false = array( |
| 1020 | array( |
| 1021 | 'belongs_question_id' => esc_sql( $question_id ), |
| 1022 | 'belongs_question_type' => $question_type, |
| 1023 | 'answer_title' => __( 'True', 'tutor' ), |
| 1024 | 'is_correct' => $answer['true_false'] == 'true' ? 1 : 0, |
| 1025 | 'answer_two_gap_match' => 'true', |
| 1026 | ), |
| 1027 | array( |
| 1028 | 'belongs_question_id' => esc_sql( $question_id ), |
| 1029 | 'belongs_question_type' => $question_type, |
| 1030 | 'answer_title' => __('False', 'tutor'), |
| 1031 | 'is_correct' => $answer['true_false'] == 'false' ? 0 : 1, |
| 1032 | 'answer_two_gap_match' => 'false', |
| 1033 | ), |
| 1034 | ); |
| 1035 | |
| 1036 | foreach ( $data_true_false as $true_false_data ) { |
| 1037 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_question_answers', $true_false_data ); |
| 1038 | } |
| 1039 | } elseif ( $question_type === 'multiple_choice' || $question_type === 'single_choice' || $question_type === 'ordering' || |
| 1040 | $question_type === 'matching' || $question_type === 'image_matching' || $question_type === 'image_answering' ) { |
| 1041 | |
| 1042 | $answer_data = array( |
| 1043 | 'belongs_question_id' => sanitize_text_field( $question_id ), |
| 1044 | 'belongs_question_type' => $question_type, |
| 1045 | 'answer_title' => sanitize_text_field( $answer['answer_title'] ), |
| 1046 | 'image_id' => isset( $answer['image_id'] ) ? $answer['image_id'] : 0, |
| 1047 | 'answer_view_format' => isset( $answer['answer_view_format'] ) ? $answer['answer_view_format'] : 0, |
| 1048 | 'answer_order' => $next_order_id, |
| 1049 | ); |
| 1050 | if ( isset( $answer['matched_answer_title'] ) ) { |
| 1051 | $answer_data['answer_two_gap_match'] = sanitize_text_field( $answer['matched_answer_title'] ); |
| 1052 | } |
| 1053 | |
| 1054 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_question_answers', $answer_data ); |
| 1055 | |
| 1056 | } elseif ( $question_type === 'fill_in_the_blank' ) { |
| 1057 | $wpdb->delete( |
| 1058 | $wpdb->prefix . 'tutor_quiz_question_answers', |
| 1059 | array( |
| 1060 | 'belongs_question_id' => $question_id, |
| 1061 | 'belongs_question_type' => $question_type, |
| 1062 | ) |
| 1063 | ); |
| 1064 | $answer_data = array( |
| 1065 | 'belongs_question_id' => sanitize_text_field( $question_id ), |
| 1066 | 'belongs_question_type' => $question_type, |
| 1067 | 'answer_title' => sanitize_text_field( $answer['answer_title'] ), |
| 1068 | 'answer_two_gap_match' => isset( $answer['answer_two_gap_match'] ) ? sanitize_text_field( trim( $answer['answer_two_gap_match'] ) ) : null, |
| 1069 | ); |
| 1070 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_question_answers', $answer_data ); |
| 1071 | } |
| 1072 | } |
| 1073 | } |
| 1074 | |
| 1075 | // Send response to browser if not internal call |
| 1076 | if($response) { |
| 1077 | wp_send_json_success(); |
| 1078 | exit; |
| 1079 | } |
| 1080 | } |
| 1081 | |
| 1082 | /** |
| 1083 | * Tutor Update Answer |
| 1084 | * |
| 1085 | * @since v.1.0.0 |
| 1086 | */ |
| 1087 | public function tutor_update_quiz_answer_options(){ |
| 1088 | tutor_utils()->checking_nonce(); |
| 1089 | |
| 1090 | global $wpdb; |
| 1091 | |
| 1092 | $answer_id = (int) $_POST['tutor_quiz_answer_id']; |
| 1093 | |
| 1094 | if(!tutor_utils()->can_user_manage('quiz_answer', $answer_id)) { |
| 1095 | wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) ); |
| 1096 | } |
| 1097 | |
| 1098 | $questions = tutor_sanitize_data( $_POST['tutor_quiz_question'] ); |
| 1099 | $answers = tutor_sanitize_data( $_POST['quiz_answer'] ); |
| 1100 | |
| 1101 | foreach ( $answers as $question_id => $answer ) { |
| 1102 | $question = tutor_utils()->avalue_dot( $question_id, $questions ); |
| 1103 | $question_type = $question['question_type']; |
| 1104 | |
| 1105 | if ( $question ) { |
| 1106 | if ( $question_type === 'multiple_choice' || $question_type === 'single_choice' || $question_type === 'ordering' || $question_type === 'matching' || $question_type === 'image_matching' || $question_type === 'fill_in_the_blank' || $question_type === 'image_answering' ) { |
| 1107 | |
| 1108 | $answer_data = array( |
| 1109 | 'belongs_question_id' => $question_id, |
| 1110 | 'belongs_question_type' => $question_type, |
| 1111 | 'answer_title' => sanitize_text_field( $answer['answer_title'] ), |
| 1112 | 'image_id' => isset( $answer['image_id'] ) ? $answer['image_id'] : 0, |
| 1113 | 'answer_view_format' => isset( $answer['answer_view_format'] ) ? sanitize_text_field( $answer['answer_view_format'] ) : '', |
| 1114 | ); |
| 1115 | if ( isset( $answer['matched_answer_title'] ) ) { |
| 1116 | $answer_data['answer_two_gap_match'] = sanitize_text_field( $answer['matched_answer_title'] ); |
| 1117 | } |
| 1118 | |
| 1119 | if ( $question_type === 'fill_in_the_blank' ) { |
| 1120 | $answer_data['answer_two_gap_match'] = isset( $answer['answer_two_gap_match'] ) ? sanitize_text_field( trim( $answer['answer_two_gap_match'] ) ) : null; |
| 1121 | } |
| 1122 | |
| 1123 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_question_answers', $answer_data, array( 'answer_id' => $answer_id ) ); |
| 1124 | } |
| 1125 | } |
| 1126 | } |
| 1127 | |
| 1128 | // die(print_r($_POST)); |
| 1129 | wp_send_json_success(); |
| 1130 | } |
| 1131 | |
| 1132 | private function get_answers_by_q_id($question_id, $question_type, $is_correct=false) { |
| 1133 | global $wpdb; |
| 1134 | |
| 1135 | $correct_clause = $is_correct ? ' AND is_correct=1 ' : ''; |
| 1136 | |
| 1137 | return $wpdb->get_results($wpdb->prepare( |
| 1138 | "SELECT * FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 1139 | WHERE belongs_question_id = %d AND |
| 1140 | belongs_question_type = %s |
| 1141 | {$correct_clause} |
| 1142 | ORDER BY answer_order ASC;", |
| 1143 | $question_id, |
| 1144 | esc_sql( $question_type ) |
| 1145 | )); |
| 1146 | } |
| 1147 | |
| 1148 | public function tutor_quiz_builder_change_type(){ |
| 1149 | tutor_utils()->checking_nonce(); |
| 1150 | |
| 1151 | global $wpdb; |
| 1152 | $question_id = sanitize_text_field( $_POST['question_id'] ); |
| 1153 | $question_type = sanitize_text_field( $_POST['question_type'] ); |
| 1154 | |
| 1155 | if(!tutor_utils()->can_user_manage('question', $question_id)) { |
| 1156 | wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) ); |
| 1157 | } |
| 1158 | |
| 1159 | // Get question data by question ID |
| 1160 | $question = $wpdb->get_row($wpdb->prepare( |
| 1161 | "SELECT * FROM {$wpdb->prefix}tutor_quiz_questions |
| 1162 | WHERE question_id = %d ", |
| 1163 | $question_id |
| 1164 | )); |
| 1165 | |
| 1166 | // Get answers by question ID |
| 1167 | $answers = $this->get_answers_by_q_id($question_id, $question_type); |
| 1168 | |
| 1169 | ob_start(); |
| 1170 | require tutor()->path . '/views/modal/question_answer_list.php'; |
| 1171 | $output = ob_get_clean(); |
| 1172 | |
| 1173 | wp_send_json_success( array( 'output' => $output ) ); |
| 1174 | } |
| 1175 | |
| 1176 | public function tutor_quiz_builder_delete_answer(){ |
| 1177 | tutor_utils()->checking_nonce(); |
| 1178 | |
| 1179 | global $wpdb; |
| 1180 | $answer_id = sanitize_text_field($_POST['answer_id']); |
| 1181 | |
| 1182 | if(!tutor_utils()->can_user_manage('quiz_answer', $answer_id)) { |
| 1183 | wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) ); |
| 1184 | } |
| 1185 | |
| 1186 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_question_answers', array( 'answer_id' => esc_sql( $answer_id ) ) ); |
| 1187 | wp_send_json_success(); |
| 1188 | } |
| 1189 | |
| 1190 | /** |
| 1191 | * Save quiz questions sorting |
| 1192 | */ |
| 1193 | public function tutor_quiz_question_sorting(){ |
| 1194 | tutor_utils()->checking_nonce(); |
| 1195 | |
| 1196 | global $wpdb; |
| 1197 | |
| 1198 | $question_ids = tutor_utils()->avalue_dot( 'sorted_question_ids', tutor_sanitize_data($_POST) ); |
| 1199 | if ( is_array( $question_ids ) && count( $question_ids ) ) { |
| 1200 | $i = 0; |
| 1201 | foreach ($question_ids as $key => $question_id){ |
| 1202 | if(tutor_utils()->can_user_manage('question', $question_id)) { |
| 1203 | $i++; |
| 1204 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_questions', array( 'question_order' => $i ), array( 'question_id' => $question_id ) ); |
| 1205 | } |
| 1206 | } |
| 1207 | } |
| 1208 | } |
| 1209 | |
| 1210 | /** |
| 1211 | * Save sorting data for quiz answers |
| 1212 | */ |
| 1213 | public function tutor_quiz_answer_sorting(){ |
| 1214 | tutor_utils()->checking_nonce(); |
| 1215 | |
| 1216 | global $wpdb; |
| 1217 | |
| 1218 | if ( ! empty($_POST['sorted_answer_ids']) && is_array($_POST['sorted_answer_ids']) && count($_POST['sorted_answer_ids']) ){ |
| 1219 | $answer_ids = $_POST['sorted_answer_ids']; |
| 1220 | $i = 0; |
| 1221 | foreach ($answer_ids as $key => $answer_id){ |
| 1222 | if(tutor_utils()->can_user_manage('quiz_answer', $answer_id)) { |
| 1223 | $i++; |
| 1224 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_question_answers', array( 'answer_order' => $i ), array( 'answer_id' => $answer_id ) ); |
| 1225 | } |
| 1226 | } |
| 1227 | } |
| 1228 | } |
| 1229 | |
| 1230 | /** |
| 1231 | * Mark answer as correct |
| 1232 | */ |
| 1233 | |
| 1234 | public function tutor_mark_answer_as_correct(){ |
| 1235 | tutor_utils()->checking_nonce(); |
| 1236 | |
| 1237 | global $wpdb; |
| 1238 | |
| 1239 | $answer_id = sanitize_text_field($_POST['answer_id']); |
| 1240 | // get question info. |
| 1241 | $belong_question = $wpdb->get_row( $wpdb->prepare( |
| 1242 | " SELECT belongs_question_id, belongs_question_type |
| 1243 | FROM {$wpdb->tutor_quiz_question_answers} |
| 1244 | WHERE answer_id = %d |
| 1245 | LIMIT 1 |
| 1246 | ", |
| 1247 | $answer_id |
| 1248 | ) ); |
| 1249 | if ( $belong_question ) { |
| 1250 | // if question found update all answer is_correct to 0 except post answer. |
| 1251 | $question_type = $belong_question->belongs_question_type; |
| 1252 | $question_id = $belong_question->belongs_question_id; |
| 1253 | if ( 'true_false' === $question_type || 'single_choice' === $question_type ) { |
| 1254 | $update = $wpdb->query( $wpdb->prepare( |
| 1255 | "UPDATE {$wpdb->tutor_quiz_question_answers} |
| 1256 | SET is_correct = 0 |
| 1257 | WHERE belongs_question_id = %d |
| 1258 | AND answer_id != %d |
| 1259 | ", |
| 1260 | $question_id, |
| 1261 | $answer_id |
| 1262 | ) ); |
| 1263 | } |
| 1264 | } |
| 1265 | |
| 1266 | $inputValue = sanitize_text_field($_POST['inputValue']); |
| 1267 | |
| 1268 | if(!tutor_utils()->can_user_manage('quiz_answer', $answer_id)) { |
| 1269 | wp_send_json_error( array('message'=>__('Access Denied', 'tutor')) ); |
| 1270 | } |
| 1271 | |
| 1272 | $answer = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->prefix}tutor_quiz_question_answers WHERE answer_id = %d LIMIT 0,1 ;", $answer_id ) ); |
| 1273 | if ( $answer->belongs_question_type === 'single_choice' ) { |
| 1274 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_question_answers', array( 'is_correct' => 0 ), array( 'belongs_question_id' => esc_sql( $answer->belongs_question_id ) ) ); |
| 1275 | } |
| 1276 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_question_answers', array( 'is_correct' => esc_sql( $inputValue ) ), array( 'answer_id' => esc_sql( $answer_id ) ) ); |
| 1277 | } |
| 1278 | |
| 1279 | //=========================// |
| 1280 | // Front end stuffs |
| 1281 | //=========================// |
| 1282 | |
| 1283 | /** |
| 1284 | * Rendering quiz for frontend |
| 1285 | * |
| 1286 | * @since v.1.0.0 |
| 1287 | */ |
| 1288 | |
| 1289 | public function tutor_render_quiz_content() { |
| 1290 | |
| 1291 | tutor_utils()->checking_nonce(); |
| 1292 | |
| 1293 | $quiz_id = (int) tutor_utils()->avalue_dot( 'quiz_id', $_POST ); |
| 1294 | |
| 1295 | if(!tutor_utils()->has_enrolled_content_access('quiz', $quiz_id)) { |
| 1296 | wp_send_json_error( array('message'=>__('Access Denied.', 'tutor')) ); |
| 1297 | } |
| 1298 | |
| 1299 | ob_start(); |
| 1300 | global $post; |
| 1301 | |
| 1302 | $post = get_post( $quiz_id ); |
| 1303 | setup_postdata( $post ); |
| 1304 | // tutor_lesson_content(); |
| 1305 | |
| 1306 | single_quiz_contents(); |
| 1307 | wp_reset_postdata(); |
| 1308 | |
| 1309 | $html = ob_get_clean(); |
| 1310 | wp_send_json_success( array( 'html' => $html ) ); |
| 1311 | } |
| 1312 | |
| 1313 | /** |
| 1314 | * Get attempt details |
| 1315 | * |
| 1316 | * @param int $attempt_id, required attempt id to get details |
| 1317 | * |
| 1318 | * @return mixed, object on success, null on failure |
| 1319 | */ |
| 1320 | public static function attempt_details( int $attempt_id ) { |
| 1321 | global $wpdb; |
| 1322 | $attempt_details = $wpdb->get_row( |
| 1323 | $wpdb->prepare( |
| 1324 | "SELECT *FROM {$wpdb->prefix}tutor_quiz_attempts |
| 1325 | WHERE attempt_id = %d", |
| 1326 | $attempt_id |
| 1327 | ) |
| 1328 | ); |
| 1329 | return $attempt_details; |
| 1330 | } |
| 1331 | |
| 1332 | /** |
| 1333 | * Update attempt info |
| 1334 | * |
| 1335 | * @param $attempt_info, serialize data |
| 1336 | * |
| 1337 | * @return bool, true on success, false on failure |
| 1338 | */ |
| 1339 | public static function update_attempt_info( int $attempt_id, $attempt_info ) { |
| 1340 | global $wpdb; |
| 1341 | $table = $wpdb->prefix . 'tutor_quiz_attempts'; |
| 1342 | $update_info = $wpdb->update( |
| 1343 | $table, |
| 1344 | array( 'attempt_info' => $attempt_info ), |
| 1345 | array( 'attempt_id' => $attempt_id ) |
| 1346 | ); |
| 1347 | return $update_info ? true : false; |
| 1348 | } |
| 1349 | |
| 1350 | } |
| 1351 |