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Quiz.php
1270 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Quiz class |
| 4 | * |
| 5 | * @package Tutor\QuestionAnswer |
| 6 | * @author Themeum <support@themeum.com> |
| 7 | * @link https://themeum.com |
| 8 | * @since 1.0.0 |
| 9 | */ |
| 10 | |
| 11 | namespace TUTOR; |
| 12 | |
| 13 | if ( ! defined( 'ABSPATH' ) ) { |
| 14 | exit; |
| 15 | } |
| 16 | |
| 17 | use Tutor\Helpers\HttpHelper; |
| 18 | use Tutor\Helpers\QueryHelper; |
| 19 | use Tutor\Models\CourseModel; |
| 20 | use Tutor\Models\QuizModel; |
| 21 | use Tutor\Traits\JsonResponse; |
| 22 | |
| 23 | /** |
| 24 | * Manage quiz operations. |
| 25 | * |
| 26 | * @since 1.0.0 |
| 27 | */ |
| 28 | class Quiz { |
| 29 | use JsonResponse; |
| 30 | |
| 31 | const META_QUIZ_OPTION = 'tutor_quiz_option'; |
| 32 | |
| 33 | /** |
| 34 | * Allowed attrs |
| 35 | * |
| 36 | * @var array |
| 37 | */ |
| 38 | private $allowed_attributes = array( |
| 39 | 'src' => array(), |
| 40 | 'style' => array(), |
| 41 | 'class' => array(), |
| 42 | 'id' => array(), |
| 43 | 'href' => array(), |
| 44 | 'alt' => array(), |
| 45 | 'title' => array(), |
| 46 | 'type' => array(), |
| 47 | 'controls' => array(), |
| 48 | 'muted' => array(), |
| 49 | 'loop' => array(), |
| 50 | 'poster' => array(), |
| 51 | 'preload' => array(), |
| 52 | 'autoplay' => array(), |
| 53 | 'width' => array(), |
| 54 | 'height' => array(), |
| 55 | ); |
| 56 | |
| 57 | /** |
| 58 | * Allowed HTML tags |
| 59 | * |
| 60 | * @var array |
| 61 | */ |
| 62 | private $allowed_html = array( 'img', 'b', 'i', 'br', 'a', 'audio', 'video', 'source' ); |
| 63 | |
| 64 | /** |
| 65 | * Register hooks |
| 66 | * |
| 67 | * @since 1.0.0 |
| 68 | * |
| 69 | * @return void |
| 70 | */ |
| 71 | public function __construct() { |
| 72 | add_action( 'wp_ajax_tutor_quiz_timeout', array( $this, 'tutor_quiz_timeout' ) ); |
| 73 | |
| 74 | // User take the quiz. |
| 75 | add_action( 'template_redirect', array( $this, 'start_the_quiz' ) ); |
| 76 | add_action( 'template_redirect', array( $this, 'answering_quiz' ) ); |
| 77 | add_action( 'template_redirect', array( $this, 'finishing_quiz_attempt' ) ); |
| 78 | |
| 79 | /** |
| 80 | * Instructor quiz review and feedback Ajax API. |
| 81 | */ |
| 82 | add_action( 'wp_ajax_review_quiz_answer', array( $this, 'review_quiz_answer' ) ); |
| 83 | add_action( 'wp_ajax_tutor_instructor_feedback', array( $this, 'tutor_instructor_feedback' ) ); |
| 84 | |
| 85 | /** |
| 86 | * New quiz builder Ajax API. |
| 87 | */ |
| 88 | add_action( 'wp_ajax_tutor_quiz_details', array( $this, 'ajax_quiz_details' ) ); |
| 89 | add_action( 'wp_ajax_tutor_quiz_delete', array( $this, 'ajax_quiz_delete' ) ); |
| 90 | |
| 91 | /** |
| 92 | * Frontend Stuff |
| 93 | */ |
| 94 | add_action( 'wp_ajax_tutor_render_quiz_content', array( $this, 'tutor_render_quiz_content' ) ); |
| 95 | |
| 96 | /** |
| 97 | * Quiz abandon action |
| 98 | * |
| 99 | * @since 1.9.6 |
| 100 | */ |
| 101 | add_action( 'wp_ajax_tutor_quiz_abandon', array( $this, 'tutor_quiz_abandon' ) ); |
| 102 | |
| 103 | $this->prepare_allowed_html(); |
| 104 | |
| 105 | /** |
| 106 | * Delete quiz attempt |
| 107 | * |
| 108 | * @since 2.1.0 |
| 109 | */ |
| 110 | add_action( 'wp_ajax_tutor_attempt_delete', array( $this, 'attempt_delete' ) ); |
| 111 | |
| 112 | add_action( 'tutor_quiz/answer/review/after', array( $this, 'do_auto_course_complete' ), 10, 3 ); |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Get quiz time units options. |
| 117 | * |
| 118 | * @since 2.6.0 |
| 119 | * |
| 120 | * @return array |
| 121 | */ |
| 122 | public static function quiz_time_units() { |
| 123 | $time_units = array( |
| 124 | 'seconds' => __( 'Seconds', 'tutor' ), |
| 125 | 'minutes' => __( 'Minutes', 'tutor' ), |
| 126 | 'hours' => __( 'Hours', 'tutor' ), |
| 127 | 'days' => __( 'Days', 'tutor' ), |
| 128 | 'weeks' => __( 'Weeks', 'tutor' ), |
| 129 | ); |
| 130 | |
| 131 | return apply_filters( 'tutor_quiz_time_units', $time_units ); |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Get quiz default settings. |
| 136 | * |
| 137 | * @since 3.0.0 |
| 138 | * |
| 139 | * @return array |
| 140 | */ |
| 141 | public static function get_default_quiz_settings() { |
| 142 | $settings = array( |
| 143 | 'time_limit' => array( |
| 144 | 'time_type' => 'minutes', |
| 145 | 'time_value' => 0, |
| 146 | ), |
| 147 | 'attempts_allowed' => 10, |
| 148 | 'feedback_mode' => 'retry', |
| 149 | 'hide_question_number_overview' => 0, |
| 150 | 'hide_quiz_time_display' => 0, |
| 151 | 'max_questions_for_answer' => 10, |
| 152 | 'open_ended_answer_characters_limit' => 500, |
| 153 | 'pass_is_required' => 0, |
| 154 | 'passing_grade' => 80, |
| 155 | 'question_layout_view' => '', |
| 156 | 'questions_order' => 'rand', |
| 157 | 'quiz_auto_start' => 0, |
| 158 | 'short_answer_characters_limit' => 200, |
| 159 | ); |
| 160 | |
| 161 | return apply_filters( 'tutor_quiz_default_settings', $settings ); |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Get question default settings. |
| 166 | * |
| 167 | * @since 3.0.0 |
| 168 | * |
| 169 | * @param string $type type of question. |
| 170 | * |
| 171 | * @return array |
| 172 | */ |
| 173 | public static function get_default_question_settings( $type ) { |
| 174 | $settings = array( |
| 175 | 'question_type' => $type, |
| 176 | 'question_mark' => 1, |
| 177 | 'answer_required' => 0, |
| 178 | 'randomize_question' => 0, |
| 179 | 'show_question_mark' => 0, |
| 180 | ); |
| 181 | |
| 182 | return apply_filters( 'tutor_question_default_settings', $settings ); |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * Get quiz modes |
| 187 | * |
| 188 | * @since 2.6.0 |
| 189 | * |
| 190 | * @return array |
| 191 | */ |
| 192 | public static function quiz_modes() { |
| 193 | $modes = array( |
| 194 | array( |
| 195 | 'key' => 'default', |
| 196 | 'value' => __( 'Default', 'tutor' ), |
| 197 | 'description' => __( 'Answers shown after quiz is finished', 'tutor' ), |
| 198 | ), |
| 199 | array( |
| 200 | 'key' => 'reveal', |
| 201 | 'value' => __( 'Reveal Mode', 'tutor' ), |
| 202 | 'description' => __( 'Show result after the attempt.', 'tutor' ), |
| 203 | ), |
| 204 | array( |
| 205 | 'key' => 'retry', |
| 206 | 'value' => __( 'Retry Mode', 'tutor' ), |
| 207 | 'description' => __( 'Reattempt quiz any number of times. Define Attempts Allowed below.', 'tutor' ), |
| 208 | ), |
| 209 | ); |
| 210 | |
| 211 | return apply_filters( 'tutor_quiz_modes', $modes ); |
| 212 | } |
| 213 | |
| 214 | /** |
| 215 | * Get quiz modes |
| 216 | * |
| 217 | * @since 2.6.0 |
| 218 | * |
| 219 | * @return array |
| 220 | */ |
| 221 | public static function quiz_question_layouts() { |
| 222 | $layouts = array( |
| 223 | '' => __( 'Set question layout view', 'tutor' ), |
| 224 | 'single_question' => __( 'Single Question', 'tutor' ), |
| 225 | 'question_pagination' => __( 'Question Pagination', 'tutor' ), |
| 226 | 'question_below_each_other' => __( 'Question below each other', 'tutor' ), |
| 227 | ); |
| 228 | |
| 229 | return apply_filters( 'tutor_quiz_layouts', $layouts ); |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * Get quiz modes |
| 234 | * |
| 235 | * @since 2.6.0 |
| 236 | * |
| 237 | * @return array |
| 238 | */ |
| 239 | public static function quiz_question_orders() { |
| 240 | $orders = array( |
| 241 | 'rand' => __( 'Random', 'tutor' ), |
| 242 | 'sorting' => __( 'Sorting', 'tutor' ), |
| 243 | 'asc' => __( 'Ascending', 'tutor' ), |
| 244 | 'desc' => __( 'Descending', 'tutor' ), |
| 245 | ); |
| 246 | |
| 247 | return apply_filters( 'tutor_quiz_layouts', $orders ); |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * Prepare allowed HTML |
| 252 | * |
| 253 | * @since 1.0.0 |
| 254 | * |
| 255 | * @return void |
| 256 | */ |
| 257 | private function prepare_allowed_html() { |
| 258 | |
| 259 | $allowed = array(); |
| 260 | |
| 261 | foreach ( $this->allowed_html as $tag ) { |
| 262 | $allowed[ $tag ] = $this->allowed_attributes; |
| 263 | } |
| 264 | |
| 265 | $this->allowed_html = $allowed; |
| 266 | } |
| 267 | |
| 268 | /** |
| 269 | * Instructor feedback ajax request handler |
| 270 | * |
| 271 | * @since 1.0.0 |
| 272 | * |
| 273 | * @return void | send json response |
| 274 | */ |
| 275 | public function tutor_instructor_feedback() { |
| 276 | tutor_utils()->checking_nonce(); |
| 277 | |
| 278 | // Check if user is privileged. |
| 279 | if ( ! User::has_any_role( array( User::ADMIN, User::INSTRUCTOR ) ) ) { |
| 280 | wp_send_json_error( tutor_utils()->error_message() ); |
| 281 | } |
| 282 | |
| 283 | $attempt_details = self::attempt_details( Input::post( 'attempt_id', 0, Input::TYPE_INT ) ); |
| 284 | $feedback = Input::post( 'feedback', '', Input::TYPE_KSES_POST ); |
| 285 | $attempt_info = isset( $attempt_details->attempt_info ) ? $attempt_details->attempt_info : false; |
| 286 | $course_id = tutor_utils()->avalue_dot( 'course_id', $attempt_details, 0 ); |
| 287 | $is_instructor = tutor_utils()->is_instructor_of_this_course( get_current_user_id(), $course_id ); |
| 288 | if ( ! current_user_can( 'manage_options' ) && ! $is_instructor ) { |
| 289 | wp_send_json_error( tutor_utils()->error_message() ); |
| 290 | } |
| 291 | |
| 292 | if ( $attempt_info ) { |
| 293 | //phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_unserialize |
| 294 | $unserialized = unserialize( $attempt_details->attempt_info ); |
| 295 | if ( is_array( $unserialized ) ) { |
| 296 | $unserialized['instructor_feedback'] = $feedback; |
| 297 | |
| 298 | //phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_serialize |
| 299 | $update = self::update_attempt_info( $attempt_details->attempt_id, serialize( $unserialized ) ); |
| 300 | if ( $update ) { |
| 301 | do_action( 'tutor_quiz/attempt/submitted/feedback', $attempt_details->attempt_id ); |
| 302 | wp_send_json_success(); |
| 303 | } else { |
| 304 | wp_send_json_error(); |
| 305 | } |
| 306 | } else { |
| 307 | wp_send_json_error( __( 'Invalid quiz info', 'tutor' ) ); |
| 308 | } |
| 309 | } |
| 310 | wp_send_json_error(); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Start Quiz from here... |
| 315 | * |
| 316 | * @since 1.0.0 |
| 317 | * |
| 318 | * @return void |
| 319 | */ |
| 320 | public function start_the_quiz() { |
| 321 | if ( 'tutor_start_quiz' !== Input::post( 'tutor_action' ) ) { |
| 322 | return; |
| 323 | } |
| 324 | |
| 325 | tutor_utils()->checking_nonce(); |
| 326 | |
| 327 | if ( ! is_user_logged_in() ) { |
| 328 | die( esc_html__( 'Please sign in to do this operation', 'tutor' ) ); |
| 329 | } |
| 330 | |
| 331 | $user_id = get_current_user_id(); |
| 332 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 333 | $course = CourseModel::get_course_by_quiz( $quiz_id ); |
| 334 | |
| 335 | self::quiz_attempt( $course->ID, $quiz_id, $user_id ); |
| 336 | wp_safe_redirect( get_permalink( $quiz_id ) ); |
| 337 | die(); |
| 338 | } |
| 339 | |
| 340 | /** |
| 341 | * Manage quiz attempt |
| 342 | * |
| 343 | * @since 2.6.1 |
| 344 | * |
| 345 | * @param integer $course_id course id. |
| 346 | * @param integer $quiz_id quiz id. |
| 347 | * @param integer $user_id user id. |
| 348 | * @param string $attempt_status attempt status. |
| 349 | * |
| 350 | * @return int inserted id|0 |
| 351 | */ |
| 352 | public static function quiz_attempt( int $course_id, int $quiz_id, int $user_id, $attempt_status = 'attempt_started' ) { |
| 353 | global $wpdb; |
| 354 | |
| 355 | if ( ! $course_id ) { |
| 356 | die( 'There is something went wrong with course, please check if quiz attached with a course' ); |
| 357 | } |
| 358 | |
| 359 | do_action( 'tutor_quiz/start/before', $quiz_id, $user_id ); |
| 360 | |
| 361 | $date = date( 'Y-m-d H:i:s', tutor_time() ); //phpcs:ignore |
| 362 | |
| 363 | $tutor_quiz_option = (array) maybe_unserialize( get_post_meta( $quiz_id, 'tutor_quiz_option', true ) ); |
| 364 | $attempts_allowed = tutor_utils()->get_quiz_option( $quiz_id, 'attempts_allowed', 0 ); |
| 365 | |
| 366 | $time_limit = tutor_utils()->get_quiz_option( $quiz_id, 'time_limit.time_value' ); |
| 367 | $time_limit_seconds = 0; |
| 368 | $time_type = 'seconds'; |
| 369 | if ( $time_limit ) { |
| 370 | $time_type = tutor_utils()->get_quiz_option( $quiz_id, 'time_limit.time_type' ); |
| 371 | |
| 372 | switch ( $time_type ) { |
| 373 | case 'seconds': |
| 374 | $time_limit_seconds = $time_limit; |
| 375 | break; |
| 376 | case 'minutes': |
| 377 | $time_limit_seconds = $time_limit * 60; |
| 378 | break; |
| 379 | case 'hours': |
| 380 | $time_limit_seconds = $time_limit * 60 * 60; |
| 381 | break; |
| 382 | case 'days': |
| 383 | $time_limit_seconds = $time_limit * 60 * 60 * 24; |
| 384 | break; |
| 385 | case 'weeks': |
| 386 | $time_limit_seconds = $time_limit * 60 * 60 * 24 * 7; |
| 387 | break; |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | $max_question_allowed = tutor_utils()->max_questions_for_take_quiz( $quiz_id ); |
| 392 | $tutor_quiz_option['time_limit']['time_limit_seconds'] = $time_limit_seconds; |
| 393 | |
| 394 | $attempt_data = array( |
| 395 | 'course_id' => $course_id, |
| 396 | 'quiz_id' => $quiz_id, |
| 397 | 'user_id' => $user_id, |
| 398 | 'total_questions' => $max_question_allowed, |
| 399 | 'total_answered_questions' => 0, |
| 400 | 'attempt_info' => maybe_serialize( $tutor_quiz_option ), |
| 401 | 'attempt_status' => $attempt_status, |
| 402 | 'attempt_ip' => tutor_utils()->get_ip(), |
| 403 | 'attempt_started_at' => $date, |
| 404 | ); |
| 405 | |
| 406 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_data ); |
| 407 | $attempt_id = (int) $wpdb->insert_id; |
| 408 | |
| 409 | if ( $attempt_id ) { |
| 410 | do_action( 'tutor_quiz/start/after', $quiz_id, $user_id, $attempt_id ); |
| 411 | return $attempt_id; |
| 412 | } else { |
| 413 | return 0; |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * Answering quiz |
| 419 | * |
| 420 | * @since 1.0.0 |
| 421 | * |
| 422 | * @return void |
| 423 | */ |
| 424 | public function answering_quiz() { |
| 425 | |
| 426 | if ( Input::post( 'tutor_action' ) !== 'tutor_answering_quiz_question' ) { |
| 427 | return; |
| 428 | } |
| 429 | // submit quiz attempts. |
| 430 | self::tutor_quiz_attempt_submit(); |
| 431 | |
| 432 | wp_safe_redirect( get_the_permalink() ); |
| 433 | die(); |
| 434 | } |
| 435 | |
| 436 | /** |
| 437 | * Quiz abandon submission handler |
| 438 | * |
| 439 | * @since 1.9.6 |
| 440 | * |
| 441 | * @return JSON response |
| 442 | */ |
| 443 | public function tutor_quiz_abandon() { |
| 444 | if ( Input::post( 'tutor_action' ) !== 'tutor_answering_quiz_question' ) { |
| 445 | return; |
| 446 | } |
| 447 | tutor_utils()->checking_nonce(); |
| 448 | // submit quiz attempts. |
| 449 | if ( self::tutor_quiz_attempt_submit() ) { |
| 450 | wp_send_json_success(); |
| 451 | } else { |
| 452 | wp_send_json_error(); |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | /** |
| 457 | * This is a unified method for handling normal quiz submit or abandon submit |
| 458 | * It will handle ajax or normal form submit and can be used with different hooks |
| 459 | * |
| 460 | * @since 1.9.6 |
| 461 | * |
| 462 | * @return true | false |
| 463 | */ |
| 464 | public static function tutor_quiz_attempt_submit() { |
| 465 | // Check logged in. |
| 466 | if ( ! is_user_logged_in() ) { |
| 467 | die( 'Please sign in to do this operation' ); |
| 468 | } |
| 469 | |
| 470 | // Check nonce. |
| 471 | tutor_utils()->checking_nonce(); |
| 472 | |
| 473 | // Prepare attempt info. |
| 474 | $user_id = get_current_user_id(); |
| 475 | $attempt_id = Input::post( 'attempt_id', 0, Input::TYPE_INT ); |
| 476 | $attempt = tutor_utils()->get_attempt( $attempt_id ); |
| 477 | $course_id = CourseModel::get_course_by_quiz( $attempt->quiz_id )->ID; |
| 478 | |
| 479 | if ( QuizModel::ATTEMPT_TIMEOUT === $attempt->attempt_status ) { |
| 480 | return false; |
| 481 | } |
| 482 | |
| 483 | // Sanitize data by helper method. |
| 484 | $attempt_answers = isset( $_POST['attempt'] ) ? tutor_sanitize_data( $_POST['attempt'] ) : false; //phpcs:ignore |
| 485 | $attempt_answers = is_array( $attempt_answers ) ? $attempt_answers : array(); |
| 486 | |
| 487 | // Check if has access to the attempt. |
| 488 | if ( ! $attempt || $user_id != $attempt->user_id ) { |
| 489 | die( 'Operation not allowed, attempt not found or permission denied' ); |
| 490 | } |
| 491 | self::manage_attempt_answers( $attempt_answers, $attempt, $attempt_id, $course_id, $user_id ); |
| 492 | return true; |
| 493 | } |
| 494 | |
| 495 | /** |
| 496 | * Manage attempt answers |
| 497 | * |
| 498 | * Evaluate each attempt answer and update the attempts table & insert in the attempt_answers table. |
| 499 | * |
| 500 | * @since 2.6.1 |
| 501 | * |
| 502 | * @param array $attempt_answers attempt answers. |
| 503 | * @param object $attempt single attempt. |
| 504 | * @param int $attempt_id attempt id. |
| 505 | * @param int $course_id course id. |
| 506 | * @param int $user_id user id. |
| 507 | * |
| 508 | * @return void |
| 509 | */ |
| 510 | public static function manage_attempt_answers( $attempt_answers, $attempt, $attempt_id, $course_id, $user_id ) { |
| 511 | global $wpdb; |
| 512 | // Before hook. |
| 513 | do_action( 'tutor_quiz/attempt_analysing/before', $attempt_id ); |
| 514 | |
| 515 | // Single quiz can have multiple question. So multiple answer should be saved. |
| 516 | foreach ( $attempt_answers as $attempt_id => $attempt_answer ) { |
| 517 | // Get total marks of all question comes. |
| 518 | $question_ids = tutor_utils()->avalue_dot( 'quiz_question_ids', $attempt_answer ); |
| 519 | $question_ids = array_filter( |
| 520 | $question_ids, |
| 521 | function ( $id ) { |
| 522 | return (int) $id; |
| 523 | } |
| 524 | ); |
| 525 | |
| 526 | // Calculate and set the total marks in attempt table for this question. |
| 527 | if ( is_array( $question_ids ) && count( $question_ids ) ) { |
| 528 | $question_ids_string = QueryHelper::prepare_in_clause( $question_ids ); |
| 529 | |
| 530 | // Get total marks of the questions from question table. |
| 531 | //phpcs:disable |
| 532 | $query = $wpdb->prepare( |
| 533 | "SELECT SUM(question_mark) |
| 534 | FROM {$wpdb->prefix}tutor_quiz_questions |
| 535 | WHERE 1 = %d |
| 536 | AND question_id IN({$question_ids_string}); |
| 537 | ", |
| 538 | 1 |
| 539 | ); |
| 540 | $total_question_marks = $wpdb->get_var( $query ); |
| 541 | //phpcs:enable |
| 542 | |
| 543 | $total_question_marks = apply_filters( 'tutor_filter_update_before_question_mark', $total_question_marks, $question_ids, $user_id, $attempt_id ); |
| 544 | |
| 545 | // Set the the total mark in the attempt table for the question. |
| 546 | $wpdb->update( |
| 547 | $wpdb->prefix . 'tutor_quiz_attempts', |
| 548 | array( 'total_marks' => $total_question_marks ), |
| 549 | array( 'attempt_id' => $attempt_id ) |
| 550 | ); |
| 551 | } |
| 552 | |
| 553 | $total_marks = 0; |
| 554 | $review_required = false; |
| 555 | $quiz_answers = tutor_utils()->avalue_dot( 'quiz_question', $attempt_answer ); |
| 556 | |
| 557 | if ( tutor_utils()->count( $quiz_answers ) ) { |
| 558 | |
| 559 | foreach ( $quiz_answers as $question_id => $answers ) { |
| 560 | $question = QuizModel::get_quiz_question_by_id( $question_id ); |
| 561 | $question_type = $question->question_type; |
| 562 | |
| 563 | $is_answer_was_correct = false; |
| 564 | $given_answer = ''; |
| 565 | |
| 566 | if ( 'true_false' === $question_type || 'single_choice' === $question_type ) { |
| 567 | |
| 568 | if ( ! is_numeric( $answers ) || ! $answers ) { |
| 569 | wp_send_json_error(); |
| 570 | exit; |
| 571 | } |
| 572 | |
| 573 | $given_answer = $answers; |
| 574 | $is_answer_was_correct = (bool) $wpdb->get_var( |
| 575 | $wpdb->prepare( |
| 576 | "SELECT is_correct |
| 577 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 578 | WHERE answer_id = %d |
| 579 | ", |
| 580 | $answers |
| 581 | ) |
| 582 | ); |
| 583 | |
| 584 | } elseif ( 'multiple_choice' === $question_type ) { |
| 585 | |
| 586 | $given_answer = (array) ( $answers ); |
| 587 | |
| 588 | $given_answer = array_filter( |
| 589 | $given_answer, |
| 590 | function ( $id ) { |
| 591 | return is_numeric( $id ) && $id > 0; |
| 592 | } |
| 593 | ); |
| 594 | $get_original_answers = (array) $wpdb->get_col( |
| 595 | $wpdb->prepare( |
| 596 | "SELECT |
| 597 | answer_id |
| 598 | FROM |
| 599 | {$wpdb->prefix}tutor_quiz_question_answers |
| 600 | WHERE belongs_question_id = %d |
| 601 | AND belongs_question_type = %s |
| 602 | AND is_correct = 1 ; |
| 603 | ", |
| 604 | $question->question_id, |
| 605 | $question_type |
| 606 | ) |
| 607 | ); |
| 608 | |
| 609 | if ( count( array_diff( $get_original_answers, $given_answer ) ) === 0 && count( $get_original_answers ) === count( $given_answer ) ) { |
| 610 | $is_answer_was_correct = true; |
| 611 | } |
| 612 | $given_answer = maybe_serialize( $answers ); |
| 613 | |
| 614 | } elseif ( 'fill_in_the_blank' === $question_type ) { |
| 615 | |
| 616 | $get_original_answer = $wpdb->get_row( |
| 617 | $wpdb->prepare( |
| 618 | "SELECT * |
| 619 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 620 | WHERE belongs_question_id = %d |
| 621 | AND belongs_question_type = %s ; |
| 622 | ", |
| 623 | $question->question_id, |
| 624 | $question_type |
| 625 | ) |
| 626 | ); |
| 627 | |
| 628 | /** |
| 629 | * Answers stored in DB |
| 630 | */ |
| 631 | $gap_answer = (array) explode( '|', $get_original_answer->answer_two_gap_match ); |
| 632 | $gap_answer = maybe_serialize( |
| 633 | array_map( |
| 634 | function ( $ans ) { |
| 635 | return wp_slash( trim( $ans ) ); |
| 636 | }, |
| 637 | $gap_answer |
| 638 | ) |
| 639 | ); |
| 640 | |
| 641 | /** |
| 642 | * Answers from user input |
| 643 | */ |
| 644 | $given_answer = (array) array_map( 'sanitize_text_field', $answers ); |
| 645 | $given_answer = maybe_serialize( $given_answer ); |
| 646 | |
| 647 | /** |
| 648 | * Compare answer's by making both case-insensitive. |
| 649 | */ |
| 650 | if ( strtolower( $given_answer ) == strtolower( $gap_answer ) ) { |
| 651 | $is_answer_was_correct = true; |
| 652 | } |
| 653 | } elseif ( 'open_ended' === $question_type || 'short_answer' === $question_type ) { |
| 654 | $review_required = true; |
| 655 | $given_answer = wp_kses_post( $answers ); |
| 656 | |
| 657 | } elseif ( 'ordering' === $question_type || 'matching' === $question_type || 'image_matching' === $question_type ) { |
| 658 | |
| 659 | $given_answer = (array) array_map( 'sanitize_text_field', tutor_utils()->avalue_dot( 'answers', $answers ) ); |
| 660 | $given_answer = maybe_serialize( $given_answer ); |
| 661 | |
| 662 | $get_original_answers = (array) $wpdb->get_col( |
| 663 | $wpdb->prepare( |
| 664 | "SELECT answer_id |
| 665 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 666 | WHERE belongs_question_id = %d |
| 667 | AND belongs_question_type = %s |
| 668 | ORDER BY answer_order ASC ; |
| 669 | ", |
| 670 | $question->question_id, |
| 671 | $question_type |
| 672 | ) |
| 673 | ); |
| 674 | |
| 675 | $get_original_answers = array_map( 'sanitize_text_field', $get_original_answers ); |
| 676 | |
| 677 | if ( maybe_serialize( $get_original_answers ) == $given_answer ) { |
| 678 | $is_answer_was_correct = true; |
| 679 | } |
| 680 | } elseif ( 'image_answering' === $question_type ) { |
| 681 | $image_inputs = tutor_utils()->avalue_dot( 'answer_id', $answers ); |
| 682 | $image_inputs = (array) array_map( 'sanitize_text_field', $image_inputs ); |
| 683 | $given_answer = maybe_serialize( $image_inputs ); |
| 684 | $is_answer_was_correct = false; |
| 685 | /** |
| 686 | * For the image_answering question type result |
| 687 | * remain pending in spite of correct answer & required |
| 688 | * review of admin/instructor. Since it's |
| 689 | * pending we need to mark it as incorrect. Otherwise if |
| 690 | * mark it correct then earned mark will be updated. then |
| 691 | * again when instructor/admin review & mark it as correct |
| 692 | * extra mark is adding. In this case, student |
| 693 | * getting double mark for the same question. |
| 694 | * |
| 695 | * For now code is commenting will be removed later on |
| 696 | * |
| 697 | * @since 2.1.5 |
| 698 | */ |
| 699 | |
| 700 | //phpcs:disable |
| 701 | |
| 702 | // $db_answer = $wpdb->get_col( |
| 703 | // $wpdb->prepare( |
| 704 | // "SELECT answer_title |
| 705 | // FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 706 | // WHERE belongs_question_id = %d |
| 707 | // AND belongs_question_type = 'image_answering' |
| 708 | // ORDER BY answer_order asc ;", |
| 709 | // $question_id |
| 710 | // ) |
| 711 | // ); |
| 712 | |
| 713 | // if ( is_array( $db_answer ) && count( $db_answer ) ) { |
| 714 | // $is_answer_was_correct = ( strtolower( maybe_serialize( array_values( $image_inputs ) ) ) == strtolower( maybe_serialize( $db_answer ) ) ); |
| 715 | // } |
| 716 | //phpcs:enable |
| 717 | } |
| 718 | |
| 719 | $question_mark = $is_answer_was_correct ? $question->question_mark : 0; |
| 720 | $total_marks += $question_mark; |
| 721 | |
| 722 | $total_marks = apply_filters( 'tutor_filter_quiz_total_marks', $total_marks, $question_id, $question_type, $user_id, $attempt_id ); |
| 723 | |
| 724 | $answers_data = array( |
| 725 | 'user_id' => $user_id, |
| 726 | 'quiz_id' => $attempt->quiz_id, |
| 727 | 'question_id' => $question_id, |
| 728 | 'quiz_attempt_id' => $attempt_id, |
| 729 | 'given_answer' => $given_answer, |
| 730 | 'question_mark' => $question->question_mark, |
| 731 | 'achieved_mark' => $question_mark, |
| 732 | 'minus_mark' => 0, |
| 733 | 'is_correct' => $is_answer_was_correct ? 1 : 0, |
| 734 | ); |
| 735 | |
| 736 | /** |
| 737 | * Check if question_type open ended or short ans the set |
| 738 | * is_correct default value null before saving |
| 739 | */ |
| 740 | if ( in_array( $question_type, array( 'open_ended', 'short_answer', 'image_answering' ) ) ) { |
| 741 | $answers_data['is_correct'] = null; |
| 742 | $review_required = true; |
| 743 | } |
| 744 | |
| 745 | $answers_data = apply_filters( 'tutor_filter_quiz_answer_data', $answers_data, $question_id, $question_type, $user_id, $attempt_id ); |
| 746 | |
| 747 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answers_data ); |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | $attempt_info = array( |
| 752 | 'total_answered_questions' => tutor_utils()->count( $quiz_answers ), |
| 753 | 'earned_marks' => $total_marks, |
| 754 | 'attempt_status' => 'attempt_ended', |
| 755 | 'attempt_ended_at' => date( 'Y-m-d H:i:s', tutor_time() ), //phpcs:ignore |
| 756 | ); |
| 757 | |
| 758 | if ( $review_required ) { |
| 759 | $attempt_info['attempt_status'] = 'review_required'; |
| 760 | } |
| 761 | |
| 762 | $wpdb->update( $wpdb->tutor_quiz_attempts, $attempt_info, array( 'attempt_id' => $attempt_id ) ); |
| 763 | |
| 764 | QuizModel::update_attempt_result( $attempt_id ); |
| 765 | } |
| 766 | |
| 767 | // After hook. |
| 768 | do_action( 'tutor_quiz/attempt_ended', $attempt_id, $course_id, $user_id ); |
| 769 | } |
| 770 | |
| 771 | |
| 772 | /** |
| 773 | * Quiz attempt will be finish here |
| 774 | * |
| 775 | * @since 1.0.0 |
| 776 | * |
| 777 | * @return void |
| 778 | */ |
| 779 | public function finishing_quiz_attempt() { |
| 780 | |
| 781 | if ( Input::post( 'tutor_action' ) !== 'tutor_finish_quiz_attempt' ) { |
| 782 | return; |
| 783 | } |
| 784 | // Checking nonce. |
| 785 | tutor_utils()->checking_nonce(); |
| 786 | |
| 787 | if ( ! is_user_logged_in() ) { |
| 788 | die( 'Please sign in to do this operation' ); |
| 789 | } |
| 790 | |
| 791 | global $wpdb; |
| 792 | |
| 793 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 794 | $attempt = tutor_utils()->is_started_quiz( $quiz_id ); |
| 795 | $attempt_id = $attempt->attempt_id; |
| 796 | |
| 797 | $attempt_info = array( |
| 798 | 'total_answered_questions' => 0, |
| 799 | 'earned_marks' => 0, |
| 800 | 'attempt_status' => 'attempt_ended', |
| 801 | 'attempt_ended_at' => date( 'Y-m-d H:i:s', tutor_time() ), //phpcs:ignore |
| 802 | ); |
| 803 | |
| 804 | do_action( 'tutor_quiz_before_finish', $attempt_id, $quiz_id, $attempt->user_id ); |
| 805 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_info, array( 'attempt_id' => $attempt_id ) ); |
| 806 | do_action( 'tutor_quiz_finished', $attempt_id, $quiz_id, $attempt->user_id ); |
| 807 | |
| 808 | wp_redirect( tutor_utils()->input_old( '_wp_http_referer' ) ); |
| 809 | } |
| 810 | |
| 811 | /** |
| 812 | * Get quiz total marks. |
| 813 | * |
| 814 | * @since 3.0.0 |
| 815 | * |
| 816 | * @param int $quiz_id quiz id. |
| 817 | * |
| 818 | * @return int|float |
| 819 | */ |
| 820 | public static function get_quiz_total_marks( $quiz_id ) { |
| 821 | global $wpdb; |
| 822 | |
| 823 | $total_marks = $wpdb->get_var( |
| 824 | $wpdb->prepare( |
| 825 | "SELECT SUM(question_mark) total_marks |
| 826 | FROM {$wpdb->prefix}tutor_quiz_questions |
| 827 | WHERE quiz_id=%d", |
| 828 | $quiz_id |
| 829 | ) |
| 830 | ); |
| 831 | |
| 832 | return floatval( $total_marks ); |
| 833 | } |
| 834 | |
| 835 | /** |
| 836 | * Quiz timeout by ajax |
| 837 | * |
| 838 | * @since 1.0.0 |
| 839 | * |
| 840 | * @return void |
| 841 | */ |
| 842 | public function tutor_quiz_timeout() { |
| 843 | tutils()->checking_nonce(); |
| 844 | |
| 845 | global $wpdb; |
| 846 | |
| 847 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 848 | $attempt = tutor_utils()->is_started_quiz( $quiz_id ); |
| 849 | |
| 850 | if ( $attempt ) { |
| 851 | $attempt_id = $attempt->attempt_id; |
| 852 | |
| 853 | $data = array( |
| 854 | 'attempt_status' => 'attempt_timeout', |
| 855 | 'total_marks' => self::get_quiz_total_marks( $quiz_id ), |
| 856 | 'earned_marks' => 0, |
| 857 | 'attempt_ended_at' => gmdate( 'Y-m-d H:i:s', tutor_time() ), |
| 858 | ); |
| 859 | |
| 860 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $data, array( 'attempt_id' => $attempt->attempt_id ) ); |
| 861 | |
| 862 | do_action( 'tutor_quiz_timeout', $attempt_id, $quiz_id, $attempt->user_id ); |
| 863 | |
| 864 | wp_send_json_success(); |
| 865 | } |
| 866 | |
| 867 | wp_send_json_error( __( 'Quiz has been timeout already', 'tutor' ) ); |
| 868 | } |
| 869 | |
| 870 | /** |
| 871 | * Review quiz answer |
| 872 | * |
| 873 | * @since 1.0.0 |
| 874 | * |
| 875 | * @return void |
| 876 | */ |
| 877 | public function review_quiz_answer() { |
| 878 | |
| 879 | tutor_utils()->checking_nonce(); |
| 880 | |
| 881 | global $wpdb; |
| 882 | |
| 883 | $attempt_id = Input::post( 'attempt_id', 0, Input::TYPE_INT ); |
| 884 | $context = Input::post( 'context' ); |
| 885 | $attempt_answer_id = Input::post( 'attempt_answer_id', 0, Input::TYPE_INT ); |
| 886 | $mark_as = Input::post( 'mark_as' ); |
| 887 | |
| 888 | if ( ! tutor_utils()->can_user_manage( 'attempt', $attempt_id ) || ! tutor_utils()->can_user_manage( 'attempt_answer', $attempt_answer_id ) ) { |
| 889 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 890 | } |
| 891 | |
| 892 | $attempt_answer = $wpdb->get_row( |
| 893 | $wpdb->prepare( |
| 894 | "SELECT * |
| 895 | FROM {$wpdb->prefix}tutor_quiz_attempt_answers |
| 896 | WHERE attempt_answer_id = %d |
| 897 | ", |
| 898 | $attempt_answer_id |
| 899 | ) |
| 900 | ); |
| 901 | |
| 902 | $attempt = tutor_utils()->get_attempt( $attempt_id ); |
| 903 | $question = QuizModel::get_quiz_question_by_id( $attempt_answer->question_id ); |
| 904 | $course_id = $attempt->course_id; |
| 905 | $student_id = $attempt->user_id; |
| 906 | $previous_ans = $attempt_answer->is_correct; |
| 907 | |
| 908 | do_action( 'tutor_quiz_review_answer_before', $attempt_answer_id, $attempt_id, $mark_as ); |
| 909 | |
| 910 | if ( 'correct' === $mark_as ) { |
| 911 | $attempt_update_data = array(); |
| 912 | $answer_update_data = array( |
| 913 | 'achieved_mark' => $attempt_answer->question_mark, |
| 914 | 'is_correct' => 1, |
| 915 | ); |
| 916 | |
| 917 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answer_update_data, array( 'attempt_answer_id' => $attempt_answer_id ) ); |
| 918 | |
| 919 | if ( 0 == $previous_ans || null == $previous_ans ) { |
| 920 | // if previous answer was wrong or in review then add point as correct. |
| 921 | $attempt_update_data = array( |
| 922 | 'earned_marks' => $attempt->earned_marks + $attempt_answer->question_mark, |
| 923 | 'is_manually_reviewed' => 1, |
| 924 | 'manually_reviewed_at' => date( 'Y-m-d H:i:s', tutor_time() ), //phpcs:ignore |
| 925 | ); |
| 926 | } |
| 927 | |
| 928 | if ( 'open_ended' === $question->question_type || 'short_answer' === $question->question_type ) { |
| 929 | $attempt_update_data['attempt_status'] = 'attempt_ended'; |
| 930 | } |
| 931 | |
| 932 | if ( ! empty( $attempt_update_data ) ) { |
| 933 | $wpdb->update( $wpdb->tutor_quiz_attempts, $attempt_update_data, array( 'attempt_id' => $attempt_id ) ); |
| 934 | } |
| 935 | } elseif ( 'incorrect' === $mark_as ) { |
| 936 | $attempt_update_data = array(); |
| 937 | $answer_update_data = array( |
| 938 | 'achieved_mark' => '0.00', |
| 939 | 'is_correct' => 0, |
| 940 | ); |
| 941 | |
| 942 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answer_update_data, array( 'attempt_answer_id' => $attempt_answer_id ) ); |
| 943 | |
| 944 | if ( 1 == $previous_ans ) { |
| 945 | // If previous ans was right then mynus. |
| 946 | $attempt_update_data = array( |
| 947 | 'earned_marks' => $attempt->earned_marks - $attempt_answer->question_mark, |
| 948 | 'is_manually_reviewed' => 1, |
| 949 | 'manually_reviewed_at' => date( 'Y-m-d H:i:s', tutor_time() ),//phpcs:ignore |
| 950 | ); |
| 951 | } |
| 952 | |
| 953 | if ( 'open_ended' === $question->question_type || 'short_answer' === $question->question_type ) { |
| 954 | $attempt_update_data['attempt_status'] = 'attempt_ended'; |
| 955 | } |
| 956 | |
| 957 | if ( ! empty( $attempt_update_data ) ) { |
| 958 | $wpdb->update( $wpdb->tutor_quiz_attempts, $attempt_update_data, array( 'attempt_id' => $attempt_id ) ); |
| 959 | } |
| 960 | } |
| 961 | |
| 962 | QuizModel::update_attempt_result( $attempt_id ); |
| 963 | |
| 964 | do_action( 'tutor_quiz_review_answer_after', $attempt_answer_id, $attempt_id, $mark_as ); |
| 965 | do_action( 'tutor_quiz/answer/review/after', $attempt_answer_id, $course_id, $student_id ); |
| 966 | |
| 967 | ob_start(); |
| 968 | tutor_load_template_from_custom_path( |
| 969 | tutor()->path . '/views/quiz/attempt-details.php', |
| 970 | array( |
| 971 | 'attempt_id' => $attempt_id, |
| 972 | 'user_id' => $student_id, |
| 973 | 'context' => $context, |
| 974 | 'back_url' => Input::post( 'back_url' ), |
| 975 | ) |
| 976 | ); |
| 977 | wp_send_json_success( array( 'html' => ob_get_clean() ) ); |
| 978 | } |
| 979 | |
| 980 | /** |
| 981 | * Do auto course complete after review a quiz attempt. |
| 982 | * |
| 983 | * @since 2.4.0 |
| 984 | * |
| 985 | * @param int $attempt_answer_id attempt answer id. |
| 986 | * @param int $course_id course id. |
| 987 | * @param int $user_id student id. |
| 988 | * |
| 989 | * @return void |
| 990 | */ |
| 991 | public function do_auto_course_complete( $attempt_answer_id, $course_id, $user_id ) { |
| 992 | if ( CourseModel::can_autocomplete_course( $course_id, $user_id ) ) { |
| 993 | CourseModel::mark_course_as_completed( $course_id, $user_id ); |
| 994 | Course::set_review_popup_data( $user_id, $course_id ); |
| 995 | } |
| 996 | } |
| 997 | |
| 998 | /** |
| 999 | * Get a quiz details by id |
| 1000 | * |
| 1001 | * @return void |
| 1002 | */ |
| 1003 | public function ajax_quiz_details() { |
| 1004 | tutor_utils()->check_nonce(); |
| 1005 | |
| 1006 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 1007 | if ( ! tutor_utils()->can_user_manage( 'quiz', $quiz_id ) ) { |
| 1008 | $this->json_response( |
| 1009 | tutor_utils()->error_message(), |
| 1010 | null, |
| 1011 | HttpHelper::STATUS_FORBIDDEN |
| 1012 | ); |
| 1013 | } |
| 1014 | |
| 1015 | $data = QuizModel::get_quiz_details( $quiz_id ); |
| 1016 | |
| 1017 | $data = apply_filters( 'tutor_quiz_details_response', $data, $quiz_id ); |
| 1018 | |
| 1019 | $this->json_response( |
| 1020 | __( 'Quiz data fetched successfully', 'tutor' ), |
| 1021 | $data |
| 1022 | ); |
| 1023 | } |
| 1024 | |
| 1025 | /** |
| 1026 | * Delete quiz by id |
| 1027 | * |
| 1028 | * @since 1.0.0 |
| 1029 | * @since 3.0.0 refactor and response change. |
| 1030 | * |
| 1031 | * @return void |
| 1032 | */ |
| 1033 | public function ajax_quiz_delete() { |
| 1034 | if ( ! tutor_utils()->is_nonce_verified() ) { |
| 1035 | $this->json_response( tutor_utils()->error_message( 'nonce' ), null, HttpHelper::STATUS_BAD_REQUEST ); |
| 1036 | } |
| 1037 | |
| 1038 | global $wpdb; |
| 1039 | |
| 1040 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 1041 | if ( ! tutor_utils()->can_user_manage( 'quiz', $quiz_id ) ) { |
| 1042 | $this->json_response( |
| 1043 | tutor_utils()->error_message(), |
| 1044 | null, |
| 1045 | HttpHelper::STATUS_FORBIDDEN |
| 1046 | ); |
| 1047 | } |
| 1048 | |
| 1049 | $post = get_post( $quiz_id ); |
| 1050 | if ( 'tutor_quiz' !== $post->post_type ) { |
| 1051 | $this->json_response( |
| 1052 | __( 'Invalid quiz', 'tutor' ), |
| 1053 | null, |
| 1054 | HttpHelper::STATUS_BAD_REQUEST |
| 1055 | ); |
| 1056 | } |
| 1057 | |
| 1058 | do_action( 'tutor_delete_quiz_before', $quiz_id ); |
| 1059 | |
| 1060 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_attempts', array( 'quiz_id' => $quiz_id ) ); |
| 1061 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_attempt_answers', array( 'quiz_id' => $quiz_id ) ); |
| 1062 | |
| 1063 | $questions_ids = $wpdb->get_col( $wpdb->prepare( "SELECT question_id FROM {$wpdb->prefix}tutor_quiz_questions WHERE quiz_id = %d ", $quiz_id ) ); |
| 1064 | |
| 1065 | if ( is_array( $questions_ids ) && count( $questions_ids ) ) { |
| 1066 | $in_question_ids = QueryHelper::prepare_in_clause( $questions_ids ); |
| 1067 | //phpcs:disable |
| 1068 | $wpdb->query( |
| 1069 | "DELETE |
| 1070 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 1071 | WHERE belongs_question_id IN({$in_question_ids}) |
| 1072 | " |
| 1073 | ); |
| 1074 | //phpcs:enable |
| 1075 | } |
| 1076 | |
| 1077 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_questions', array( 'quiz_id' => $quiz_id ) ); |
| 1078 | |
| 1079 | wp_delete_post( $quiz_id, true ); |
| 1080 | |
| 1081 | do_action( 'tutor_delete_quiz_after', $quiz_id ); |
| 1082 | |
| 1083 | $this->json_response( |
| 1084 | __( 'Quiz deleted successfully', 'tutor' ), |
| 1085 | $quiz_id |
| 1086 | ); |
| 1087 | } |
| 1088 | |
| 1089 | /** |
| 1090 | * Get answers by quiz id |
| 1091 | * |
| 1092 | * @since 1.0.0 |
| 1093 | * |
| 1094 | * @param int $question_id question id. |
| 1095 | * @param mixed $question_type type of question. |
| 1096 | * @param boolean $is_correct only correct answers or not. |
| 1097 | * |
| 1098 | * @return wpdb:get_results |
| 1099 | */ |
| 1100 | private function get_answers_by_q_id( $question_id, $question_type, $is_correct = false ) { |
| 1101 | global $wpdb; |
| 1102 | |
| 1103 | $correct_clause = $is_correct ? ' AND is_correct=1 ' : ''; |
| 1104 | //phpcs:disable |
| 1105 | return $wpdb->get_results( |
| 1106 | $wpdb->prepare( |
| 1107 | "SELECT * FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 1108 | WHERE belongs_question_id = %d |
| 1109 | AND belongs_question_type = %s |
| 1110 | {$correct_clause} |
| 1111 | ORDER BY answer_order ASC; |
| 1112 | ", |
| 1113 | $question_id, |
| 1114 | esc_sql( $question_type ) |
| 1115 | ) |
| 1116 | ); |
| 1117 | //phpcs:enable |
| 1118 | } |
| 1119 | |
| 1120 | /** |
| 1121 | * Rendering quiz for frontend |
| 1122 | * |
| 1123 | * @since 1.0.0 |
| 1124 | * |
| 1125 | * @return void send wp_json response |
| 1126 | */ |
| 1127 | public function tutor_render_quiz_content() { |
| 1128 | |
| 1129 | tutor_utils()->checking_nonce(); |
| 1130 | |
| 1131 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 1132 | |
| 1133 | if ( ! tutor_utils()->has_enrolled_content_access( 'quiz', $quiz_id ) ) { |
| 1134 | wp_send_json_error( array( 'message' => __( 'Access Denied.', 'tutor' ) ) ); |
| 1135 | } |
| 1136 | |
| 1137 | ob_start(); |
| 1138 | global $post; |
| 1139 | |
| 1140 | $post = get_post( $quiz_id ); //phpcs:ignore |
| 1141 | setup_postdata( $post ); |
| 1142 | |
| 1143 | single_quiz_contents(); |
| 1144 | wp_reset_postdata(); |
| 1145 | |
| 1146 | $html = ob_get_clean(); |
| 1147 | wp_send_json_success( array( 'html' => $html ) ); |
| 1148 | } |
| 1149 | |
| 1150 | /** |
| 1151 | * Get attempt details |
| 1152 | * |
| 1153 | * @since 1.0.0 |
| 1154 | * |
| 1155 | * @param int $attempt_id required attempt id to get details. |
| 1156 | * |
| 1157 | * @return mixed object on success, null on failure |
| 1158 | */ |
| 1159 | public static function attempt_details( int $attempt_id ) { |
| 1160 | global $wpdb; |
| 1161 | $attempt_details = $wpdb->get_row( |
| 1162 | $wpdb->prepare( |
| 1163 | "SELECT * |
| 1164 | FROM {$wpdb->prefix}tutor_quiz_attempts |
| 1165 | WHERE attempt_id = %d |
| 1166 | ", |
| 1167 | $attempt_id |
| 1168 | ) |
| 1169 | ); |
| 1170 | return $attempt_details; |
| 1171 | } |
| 1172 | |
| 1173 | /** |
| 1174 | * Update quiz attempt info |
| 1175 | * |
| 1176 | * @since 1.0.0 |
| 1177 | * |
| 1178 | * @param int $attempt_id attempt id. |
| 1179 | * @param mixed $attempt_info serialize data. |
| 1180 | * |
| 1181 | * @return bool, true on success, false on failure |
| 1182 | */ |
| 1183 | public static function update_attempt_info( int $attempt_id, $attempt_info ) { |
| 1184 | global $wpdb; |
| 1185 | $table = $wpdb->prefix . 'tutor_quiz_attempts'; |
| 1186 | $update_info = $wpdb->update( |
| 1187 | $table, |
| 1188 | array( 'attempt_info' => $attempt_info ), |
| 1189 | array( 'attempt_id' => $attempt_id ) |
| 1190 | ); |
| 1191 | return $update_info ? true : false; |
| 1192 | } |
| 1193 | |
| 1194 | /** |
| 1195 | * Attempt delete ajax request handler |
| 1196 | * |
| 1197 | * @since 2.1.0 |
| 1198 | * |
| 1199 | * @return void wp_json response |
| 1200 | */ |
| 1201 | public function attempt_delete() { |
| 1202 | tutor_utils()->checking_nonce(); |
| 1203 | |
| 1204 | $attempt_id = Input::post( 'id', 0, Input::TYPE_INT ); |
| 1205 | $attempt = tutor_utils()->get_attempt( $attempt_id ); |
| 1206 | if ( ! $attempt ) { |
| 1207 | wp_send_json_error( __( 'Invalid attempt ID', 'tutor' ) ); |
| 1208 | } |
| 1209 | |
| 1210 | $user_id = get_current_user_id(); |
| 1211 | $course_id = $attempt->course_id; |
| 1212 | |
| 1213 | if ( tutor_utils()->can_user_edit_course( $user_id, $course_id ) ) { |
| 1214 | QuizModel::delete_quiz_attempt( $attempt_id ); |
| 1215 | wp_send_json_success( __( 'Attempt deleted successfully!', 'tutor' ) ); |
| 1216 | } else { |
| 1217 | wp_send_json_error( tutor_utils()->error_message() ); |
| 1218 | } |
| 1219 | } |
| 1220 | |
| 1221 | /** |
| 1222 | * Get all quiz attempts for a user in a specific course. |
| 1223 | * |
| 1224 | * @since 3.8.1 |
| 1225 | * |
| 1226 | * @param int $course_id The ID of the course. |
| 1227 | * @param int $user_id The ID of the user. |
| 1228 | * |
| 1229 | * @return array Returns an array of quiz attempt objects with their answers, or an empty array on error. |
| 1230 | */ |
| 1231 | public function get_quiz_attempts_and_answers_by_course_id( int $course_id ): array { |
| 1232 | global $wpdb; |
| 1233 | |
| 1234 | $results = QueryHelper::get_all( $wpdb->tutor_quiz_attempts, array( 'course_id' => $course_id ), 'course_id', -1 ); |
| 1235 | |
| 1236 | if ( empty( $results ) ) { |
| 1237 | return array(); |
| 1238 | } |
| 1239 | |
| 1240 | return array_map( |
| 1241 | function ( $item ) { |
| 1242 | $item->quiz_attempt_answers = $this->get_quiz_attempt_answers_by_attempt_id( $item->attempt_id ); |
| 1243 | return $item; |
| 1244 | }, |
| 1245 | $results |
| 1246 | ); |
| 1247 | } |
| 1248 | |
| 1249 | /** |
| 1250 | * Get all quiz attempt answers for a specific quiz attempt. |
| 1251 | * |
| 1252 | * @since 3.8.1 |
| 1253 | * |
| 1254 | * @param int $attempt_id The ID of the quiz attempt. |
| 1255 | * |
| 1256 | * @return array Returns an array of quiz attempt answers objects, or an empty array on error. |
| 1257 | */ |
| 1258 | private function get_quiz_attempt_answers_by_attempt_id( int $attempt_id ): array { |
| 1259 | global $wpdb; |
| 1260 | |
| 1261 | $results = QueryHelper::get_all( $wpdb->tutor_quiz_attempt_answers, array( 'quiz_attempt_id' => $attempt_id ), 'quiz_attempt_id', -1 ); |
| 1262 | |
| 1263 | if ( empty( $results ) ) { |
| 1264 | return array(); |
| 1265 | } |
| 1266 | |
| 1267 | return $results; |
| 1268 | } |
| 1269 | } |
| 1270 |