| 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 |
if ( $attempt_info ) { |
| 287 |
//phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_unserialize |
| 288 |
$unserialized = unserialize( $attempt_details->attempt_info ); |
| 289 |
if ( is_array( $unserialized ) ) { |
| 290 |
$unserialized['instructor_feedback'] = $feedback; |
| 291 |
|
| 292 |
//phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_serialize |
| 293 |
$update = self::update_attempt_info( $attempt_details->attempt_id, serialize( $unserialized ) ); |
| 294 |
if ( $update ) { |
| 295 |
do_action( 'tutor_quiz/attempt/submitted/feedback', $attempt_details->attempt_id ); |
| 296 |
wp_send_json_success(); |
| 297 |
} else { |
| 298 |
wp_send_json_error(); |
| 299 |
} |
| 300 |
} else { |
| 301 |
wp_send_json_error( __( 'Invalid quiz info', 'tutor' ) ); |
| 302 |
} |
| 303 |
} |
| 304 |
wp_send_json_error(); |
| 305 |
} |
| 306 |
|
| 307 |
/** |
| 308 |
* Start Quiz from here... |
| 309 |
* |
| 310 |
* @since 1.0.0 |
| 311 |
* |
| 312 |
* @return void |
| 313 |
*/ |
| 314 |
public function start_the_quiz() { |
| 315 |
if ( 'tutor_start_quiz' !== Input::post( 'tutor_action' ) ) { |
| 316 |
return; |
| 317 |
} |
| 318 |
|
| 319 |
tutor_utils()->checking_nonce(); |
| 320 |
|
| 321 |
if ( ! is_user_logged_in() ) { |
| 322 |
die( esc_html__( 'Please sign in to do this operation', 'tutor' ) ); |
| 323 |
} |
| 324 |
|
| 325 |
$user_id = get_current_user_id(); |
| 326 |
$quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 327 |
$course = CourseModel::get_course_by_quiz( $quiz_id ); |
| 328 |
|
| 329 |
self::quiz_attempt( $course->ID, $quiz_id, $user_id ); |
| 330 |
wp_safe_redirect( get_permalink( $quiz_id ) ); |
| 331 |
die(); |
| 332 |
} |
| 333 |
|
| 334 |
/** |
| 335 |
* Manage quiz attempt |
| 336 |
* |
| 337 |
* @since 2.6.1 |
| 338 |
* |
| 339 |
* @param integer $course_id course id. |
| 340 |
* @param integer $quiz_id quiz id. |
| 341 |
* @param integer $user_id user id. |
| 342 |
* @param string $attempt_status attempt status. |
| 343 |
* |
| 344 |
* @return int inserted id|0 |
| 345 |
*/ |
| 346 |
public static function quiz_attempt( int $course_id, int $quiz_id, int $user_id, $attempt_status = 'attempt_started' ) { |
| 347 |
global $wpdb; |
| 348 |
|
| 349 |
if ( ! $course_id ) { |
| 350 |
die( 'There is something went wrong with course, please check if quiz attached with a course' ); |
| 351 |
} |
| 352 |
|
| 353 |
do_action( 'tutor_quiz/start/before', $quiz_id, $user_id ); |
| 354 |
|
| 355 |
$date = date( 'Y-m-d H:i:s', tutor_time() ); //phpcs:ignore |
| 356 |
|
| 357 |
$tutor_quiz_option = (array) maybe_unserialize( get_post_meta( $quiz_id, 'tutor_quiz_option', true ) ); |
| 358 |
$attempts_allowed = tutor_utils()->get_quiz_option( $quiz_id, 'attempts_allowed', 0 ); |
| 359 |
|
| 360 |
$time_limit = tutor_utils()->get_quiz_option( $quiz_id, 'time_limit.time_value' ); |
| 361 |
$time_limit_seconds = 0; |
| 362 |
$time_type = 'seconds'; |
| 363 |
if ( $time_limit ) { |
| 364 |
$time_type = tutor_utils()->get_quiz_option( $quiz_id, 'time_limit.time_type' ); |
| 365 |
|
| 366 |
switch ( $time_type ) { |
| 367 |
case 'seconds': |
| 368 |
$time_limit_seconds = $time_limit; |
| 369 |
break; |
| 370 |
case 'minutes': |
| 371 |
$time_limit_seconds = $time_limit * 60; |
| 372 |
break; |
| 373 |
case 'hours': |
| 374 |
$time_limit_seconds = $time_limit * 60 * 60; |
| 375 |
break; |
| 376 |
case 'days': |
| 377 |
$time_limit_seconds = $time_limit * 60 * 60 * 24; |
| 378 |
break; |
| 379 |
case 'weeks': |
| 380 |
$time_limit_seconds = $time_limit * 60 * 60 * 24 * 7; |
| 381 |
break; |
| 382 |
} |
| 383 |
} |
| 384 |
|
| 385 |
$max_question_allowed = tutor_utils()->max_questions_for_take_quiz( $quiz_id ); |
| 386 |
$tutor_quiz_option['time_limit']['time_limit_seconds'] = $time_limit_seconds; |
| 387 |
|
| 388 |
$attempt_data = array( |
| 389 |
'course_id' => $course_id, |
| 390 |
'quiz_id' => $quiz_id, |
| 391 |
'user_id' => $user_id, |
| 392 |
'total_questions' => $max_question_allowed, |
| 393 |
'total_answered_questions' => 0, |
| 394 |
'attempt_info' => maybe_serialize( $tutor_quiz_option ), |
| 395 |
'attempt_status' => $attempt_status, |
| 396 |
'attempt_ip' => tutor_utils()->get_ip(), |
| 397 |
'attempt_started_at' => $date, |
| 398 |
); |
| 399 |
|
| 400 |
$wpdb->insert( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_data ); |
| 401 |
$attempt_id = (int) $wpdb->insert_id; |
| 402 |
|
| 403 |
if ( $attempt_id ) { |
| 404 |
do_action( 'tutor_quiz/start/after', $quiz_id, $user_id, $attempt_id ); |
| 405 |
return $attempt_id; |
| 406 |
} else { |
| 407 |
return 0; |
| 408 |
} |
| 409 |
} |
| 410 |
|
| 411 |
/** |
| 412 |
* Answering quiz |
| 413 |
* |
| 414 |
* @since 1.0.0 |
| 415 |
* |
| 416 |
* @return void |
| 417 |
*/ |
| 418 |
public function answering_quiz() { |
| 419 |
|
| 420 |
if ( Input::post( 'tutor_action' ) !== 'tutor_answering_quiz_question' ) { |
| 421 |
return; |
| 422 |
} |
| 423 |
// submit quiz attempts. |
| 424 |
self::tutor_quiz_attempt_submit(); |
| 425 |
|
| 426 |
wp_safe_redirect( get_the_permalink() ); |
| 427 |
die(); |
| 428 |
} |
| 429 |
|
| 430 |
/** |
| 431 |
* Quiz abandon submission handler |
| 432 |
* |
| 433 |
* @since 1.9.6 |
| 434 |
* |
| 435 |
* @return JSON response |
| 436 |
*/ |
| 437 |
public function tutor_quiz_abandon() { |
| 438 |
if ( Input::post( 'tutor_action' ) !== 'tutor_answering_quiz_question' ) { |
| 439 |
return; |
| 440 |
} |
| 441 |
tutor_utils()->checking_nonce(); |
| 442 |
// submit quiz attempts. |
| 443 |
if ( self::tutor_quiz_attempt_submit() ) { |
| 444 |
wp_send_json_success(); |
| 445 |
} else { |
| 446 |
wp_send_json_error(); |
| 447 |
} |
| 448 |
} |
| 449 |
|
| 450 |
/** |
| 451 |
* This is a unified method for handling normal quiz submit or abandon submit |
| 452 |
* It will handle ajax or normal form submit and can be used with different hooks |
| 453 |
* |
| 454 |
* @since 1.9.6 |
| 455 |
* |
| 456 |
* @return true | false |
| 457 |
*/ |
| 458 |
public static function tutor_quiz_attempt_submit() { |
| 459 |
// Check logged in. |
| 460 |
if ( ! is_user_logged_in() ) { |
| 461 |
die( 'Please sign in to do this operation' ); |
| 462 |
} |
| 463 |
|
| 464 |
// Check nonce. |
| 465 |
tutor_utils()->checking_nonce(); |
| 466 |
|
| 467 |
// Prepare attempt info. |
| 468 |
$user_id = get_current_user_id(); |
| 469 |
$attempt_id = Input::post( 'attempt_id', 0, Input::TYPE_INT ); |
| 470 |
$attempt = tutor_utils()->get_attempt( $attempt_id ); |
| 471 |
$course_id = CourseModel::get_course_by_quiz( $attempt->quiz_id )->ID; |
| 472 |
|
| 473 |
if ( QuizModel::ATTEMPT_TIMEOUT === $attempt->attempt_status ) { |
| 474 |
return false; |
| 475 |
} |
| 476 |
|
| 477 |
// Sanitize data by helper method. |
| 478 |
$attempt_answers = isset( $_POST['attempt'] ) ? tutor_sanitize_data( $_POST['attempt'] ) : false; //phpcs:ignore |
| 479 |
$attempt_answers = is_array( $attempt_answers ) ? $attempt_answers : array(); |
| 480 |
|
| 481 |
// Check if has access to the attempt. |
| 482 |
if ( ! $attempt || $user_id != $attempt->user_id ) { |
| 483 |
die( 'Operation not allowed, attempt not found or permission denied' ); |
| 484 |
} |
| 485 |
self::manage_attempt_answers( $attempt_answers, $attempt, $attempt_id, $course_id, $user_id ); |
| 486 |
return true; |
| 487 |
} |
| 488 |
|
| 489 |
/** |
| 490 |
* Manage attempt answers |
| 491 |
* |
| 492 |
* Evaluate each attempt answer and update the attempts table & insert in the attempt_answers table. |
| 493 |
* |
| 494 |
* @since 2.6.1 |
| 495 |
* |
| 496 |
* @param array $attempt_answers attempt answers. |
| 497 |
* @param object $attempt single attempt. |
| 498 |
* @param int $attempt_id attempt id. |
| 499 |
* @param int $course_id course id. |
| 500 |
* @param int $user_id user id. |
| 501 |
* |
| 502 |
* @return void |
| 503 |
*/ |
| 504 |
public static function manage_attempt_answers( $attempt_answers, $attempt, $attempt_id, $course_id, $user_id ) { |
| 505 |
global $wpdb; |
| 506 |
// Before hook. |
| 507 |
do_action( 'tutor_quiz/attempt_analysing/before', $attempt_id ); |
| 508 |
|
| 509 |
// Single quiz can have multiple question. So multiple answer should be saved. |
| 510 |
foreach ( $attempt_answers as $attempt_id => $attempt_answer ) { |
| 511 |
// Get total marks of all question comes. |
| 512 |
$question_ids = tutor_utils()->avalue_dot( 'quiz_question_ids', $attempt_answer ); |
| 513 |
$question_ids = array_filter( |
| 514 |
$question_ids, |
| 515 |
function ( $id ) { |
| 516 |
return (int) $id; |
| 517 |
} |
| 518 |
); |
| 519 |
|
| 520 |
// Calculate and set the total marks in attempt table for this question. |
| 521 |
if ( is_array( $question_ids ) && count( $question_ids ) ) { |
| 522 |
$question_ids_string = QueryHelper::prepare_in_clause( $question_ids ); |
| 523 |
|
| 524 |
// Get total marks of the questions from question table. |
| 525 |
//phpcs:disable |
| 526 |
$query = $wpdb->prepare( |
| 527 |
"SELECT SUM(question_mark) |
| 528 |
FROM {$wpdb->prefix}tutor_quiz_questions |
| 529 |
WHERE 1 = %d |
| 530 |
AND question_id IN({$question_ids_string}); |
| 531 |
", |
| 532 |
1 |
| 533 |
); |
| 534 |
$total_question_marks = $wpdb->get_var( $query ); |
| 535 |
//phpcs:enable |
| 536 |
|
| 537 |
$total_question_marks = apply_filters( 'tutor_filter_update_before_question_mark', $total_question_marks, $question_ids, $user_id, $attempt_id ); |
| 538 |
|
| 539 |
// Set the the total mark in the attempt table for the question. |
| 540 |
$wpdb->update( |
| 541 |
$wpdb->prefix . 'tutor_quiz_attempts', |
| 542 |
array( 'total_marks' => $total_question_marks ), |
| 543 |
array( 'attempt_id' => $attempt_id ) |
| 544 |
); |
| 545 |
} |
| 546 |
|
| 547 |
$total_marks = 0; |
| 548 |
$review_required = false; |
| 549 |
$quiz_answers = tutor_utils()->avalue_dot( 'quiz_question', $attempt_answer ); |
| 550 |
|
| 551 |
if ( tutor_utils()->count( $quiz_answers ) ) { |
| 552 |
|
| 553 |
foreach ( $quiz_answers as $question_id => $answers ) { |
| 554 |
$question = QuizModel::get_quiz_question_by_id( $question_id ); |
| 555 |
$question_type = $question->question_type; |
| 556 |
|
| 557 |
$is_answer_was_correct = false; |
| 558 |
$given_answer = ''; |
| 559 |
|
| 560 |
if ( 'true_false' === $question_type || 'single_choice' === $question_type ) { |
| 561 |
|
| 562 |
if ( ! is_numeric( $answers ) || ! $answers ) { |
| 563 |
wp_send_json_error(); |
| 564 |
exit; |
| 565 |
} |
| 566 |
|
| 567 |
$given_answer = $answers; |
| 568 |
$is_answer_was_correct = (bool) $wpdb->get_var( |
| 569 |
$wpdb->prepare( |
| 570 |
"SELECT is_correct |
| 571 |
FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 572 |
WHERE answer_id = %d |
| 573 |
", |
| 574 |
$answers |
| 575 |
) |
| 576 |
); |
| 577 |
|
| 578 |
} elseif ( 'multiple_choice' === $question_type ) { |
| 579 |
|
| 580 |
$given_answer = (array) ( $answers ); |
| 581 |
|
| 582 |
$given_answer = array_filter( |
| 583 |
$given_answer, |
| 584 |
function ( $id ) { |
| 585 |
return is_numeric( $id ) && $id > 0; |
| 586 |
} |
| 587 |
); |
| 588 |
$get_original_answers = (array) $wpdb->get_col( |
| 589 |
$wpdb->prepare( |
| 590 |
"SELECT |
| 591 |
answer_id |
| 592 |
FROM |
| 593 |
{$wpdb->prefix}tutor_quiz_question_answers |
| 594 |
WHERE belongs_question_id = %d |
| 595 |
AND belongs_question_type = %s |
| 596 |
AND is_correct = 1 ; |
| 597 |
", |
| 598 |
$question->question_id, |
| 599 |
$question_type |
| 600 |
) |
| 601 |
); |
| 602 |
|
| 603 |
if ( count( array_diff( $get_original_answers, $given_answer ) ) === 0 && count( $get_original_answers ) === count( $given_answer ) ) { |
| 604 |
$is_answer_was_correct = true; |
| 605 |
} |
| 606 |
$given_answer = maybe_serialize( $answers ); |
| 607 |
|
| 608 |
} elseif ( 'fill_in_the_blank' === $question_type ) { |
| 609 |
|
| 610 |
$get_original_answer = $wpdb->get_row( |
| 611 |
$wpdb->prepare( |
| 612 |
"SELECT * |
| 613 |
FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 614 |
WHERE belongs_question_id = %d |
| 615 |
AND belongs_question_type = %s ; |
| 616 |
", |
| 617 |
$question->question_id, |
| 618 |
$question_type |
| 619 |
) |
| 620 |
); |
| 621 |
|
| 622 |
/** |
| 623 |
* Answers stored in DB |
| 624 |
*/ |
| 625 |
$gap_answer = (array) explode( '|', $get_original_answer->answer_two_gap_match ); |
| 626 |
$gap_answer = maybe_serialize( |
| 627 |
array_map( |
| 628 |
function ( $ans ) { |
| 629 |
return wp_slash( trim( $ans ) ); |
| 630 |
}, |
| 631 |
$gap_answer |
| 632 |
) |
| 633 |
); |
| 634 |
|
| 635 |
/** |
| 636 |
* Answers from user input |
| 637 |
*/ |
| 638 |
$given_answer = (array) array_map( 'sanitize_text_field', $answers ); |
| 639 |
$given_answer = maybe_serialize( $given_answer ); |
| 640 |
|
| 641 |
/** |
| 642 |
* Compare answer's by making both case-insensitive. |
| 643 |
*/ |
| 644 |
if ( strtolower( $given_answer ) == strtolower( $gap_answer ) ) { |
| 645 |
$is_answer_was_correct = true; |
| 646 |
} |
| 647 |
} elseif ( 'open_ended' === $question_type || 'short_answer' === $question_type ) { |
| 648 |
$review_required = true; |
| 649 |
$given_answer = wp_kses_post( $answers ); |
| 650 |
|
| 651 |
} elseif ( 'ordering' === $question_type || 'matching' === $question_type || 'image_matching' === $question_type ) { |
| 652 |
|
| 653 |
$given_answer = (array) array_map( 'sanitize_text_field', tutor_utils()->avalue_dot( 'answers', $answers ) ); |
| 654 |
$given_answer = maybe_serialize( $given_answer ); |
| 655 |
|
| 656 |
$get_original_answers = (array) $wpdb->get_col( |
| 657 |
$wpdb->prepare( |
| 658 |
"SELECT answer_id |
| 659 |
FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 660 |
WHERE belongs_question_id = %d |
| 661 |
AND belongs_question_type = %s |
| 662 |
ORDER BY answer_order ASC ; |
| 663 |
", |
| 664 |
$question->question_id, |
| 665 |
$question_type |
| 666 |
) |
| 667 |
); |
| 668 |
|
| 669 |
$get_original_answers = array_map( 'sanitize_text_field', $get_original_answers ); |
| 670 |
|
| 671 |
if ( maybe_serialize( $get_original_answers ) == $given_answer ) { |
| 672 |
$is_answer_was_correct = true; |
| 673 |
} |
| 674 |
} elseif ( 'image_answering' === $question_type ) { |
| 675 |
$image_inputs = tutor_utils()->avalue_dot( 'answer_id', $answers ); |
| 676 |
$image_inputs = (array) array_map( 'sanitize_text_field', $image_inputs ); |
| 677 |
$given_answer = maybe_serialize( $image_inputs ); |
| 678 |
$is_answer_was_correct = false; |
| 679 |
/** |
| 680 |
* For the image_answering question type result |
| 681 |
* remain pending in spite of correct answer & required |
| 682 |
* review of admin/instructor. Since it's |
| 683 |
* pending we need to mark it as incorrect. Otherwise if |
| 684 |
* mark it correct then earned mark will be updated. then |
| 685 |
* again when instructor/admin review & mark it as correct |
| 686 |
* extra mark is adding. In this case, student |
| 687 |
* getting double mark for the same question. |
| 688 |
* |
| 689 |
* For now code is commenting will be removed later on |
| 690 |
* |
| 691 |
* @since 2.1.5 |
| 692 |
*/ |
| 693 |
|
| 694 |
//phpcs:disable |
| 695 |
|
| 696 |
// $db_answer = $wpdb->get_col( |
| 697 |
// $wpdb->prepare( |
| 698 |
// "SELECT answer_title |
| 699 |
// FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 700 |
// WHERE belongs_question_id = %d |
| 701 |
// AND belongs_question_type = 'image_answering' |
| 702 |
// ORDER BY answer_order asc ;", |
| 703 |
// $question_id |
| 704 |
// ) |
| 705 |
// ); |
| 706 |
|
| 707 |
// if ( is_array( $db_answer ) && count( $db_answer ) ) { |
| 708 |
// $is_answer_was_correct = ( strtolower( maybe_serialize( array_values( $image_inputs ) ) ) == strtolower( maybe_serialize( $db_answer ) ) ); |
| 709 |
// } |
| 710 |
//phpcs:enable |
| 711 |
} |
| 712 |
|
| 713 |
$question_mark = $is_answer_was_correct ? $question->question_mark : 0; |
| 714 |
$total_marks += $question_mark; |
| 715 |
|
| 716 |
$total_marks = apply_filters( 'tutor_filter_quiz_total_marks', $total_marks, $question_id, $question_type, $user_id, $attempt_id ); |
| 717 |
|
| 718 |
$answers_data = array( |
| 719 |
'user_id' => $user_id, |
| 720 |
'quiz_id' => $attempt->quiz_id, |
| 721 |
'question_id' => $question_id, |
| 722 |
'quiz_attempt_id' => $attempt_id, |
| 723 |
'given_answer' => $given_answer, |
| 724 |
'question_mark' => $question->question_mark, |
| 725 |
'achieved_mark' => $question_mark, |
| 726 |
'minus_mark' => 0, |
| 727 |
'is_correct' => $is_answer_was_correct ? 1 : 0, |
| 728 |
); |
| 729 |
|
| 730 |
/** |
| 731 |
* Check if question_type open ended or short ans the set |
| 732 |
* is_correct default value null before saving |
| 733 |
*/ |
| 734 |
if ( in_array( $question_type, array( 'open_ended', 'short_answer', 'image_answering' ) ) ) { |
| 735 |
$answers_data['is_correct'] = null; |
| 736 |
$review_required = true; |
| 737 |
} |
| 738 |
|
| 739 |
$answers_data = apply_filters( 'tutor_filter_quiz_answer_data', $answers_data, $question_id, $question_type, $user_id, $attempt_id ); |
| 740 |
|
| 741 |
$wpdb->insert( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answers_data ); |
| 742 |
} |
| 743 |
} |
| 744 |
|
| 745 |
$attempt_info = array( |
| 746 |
'total_answered_questions' => tutor_utils()->count( $quiz_answers ), |
| 747 |
'earned_marks' => $total_marks, |
| 748 |
'attempt_status' => 'attempt_ended', |
| 749 |
'attempt_ended_at' => date( 'Y-m-d H:i:s', tutor_time() ), //phpcs:ignore |
| 750 |
); |
| 751 |
|
| 752 |
if ( $review_required ) { |
| 753 |
$attempt_info['attempt_status'] = 'review_required'; |
| 754 |
} |
| 755 |
|
| 756 |
$wpdb->update( $wpdb->tutor_quiz_attempts, $attempt_info, array( 'attempt_id' => $attempt_id ) ); |
| 757 |
|
| 758 |
QuizModel::update_attempt_result( $attempt_id ); |
| 759 |
} |
| 760 |
|
| 761 |
// After hook. |
| 762 |
do_action( 'tutor_quiz/attempt_ended', $attempt_id, $course_id, $user_id ); |
| 763 |
} |
| 764 |
|
| 765 |
|
| 766 |
/** |
| 767 |
* Quiz attempt will be finish here |
| 768 |
* |
| 769 |
* @since 1.0.0 |
| 770 |
* |
| 771 |
* @return void |
| 772 |
*/ |
| 773 |
public function finishing_quiz_attempt() { |
| 774 |
|
| 775 |
if ( Input::post( 'tutor_action' ) !== 'tutor_finish_quiz_attempt' ) { |
| 776 |
return; |
| 777 |
} |
| 778 |
// Checking nonce. |
| 779 |
tutor_utils()->checking_nonce(); |
| 780 |
|
| 781 |
if ( ! is_user_logged_in() ) { |
| 782 |
die( 'Please sign in to do this operation' ); |
| 783 |
} |
| 784 |
|
| 785 |
global $wpdb; |
| 786 |
|
| 787 |
$quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 788 |
$attempt = tutor_utils()->is_started_quiz( $quiz_id ); |
| 789 |
$attempt_id = $attempt->attempt_id; |
| 790 |
|
| 791 |
$attempt_info = array( |
| 792 |
'total_answered_questions' => 0, |
| 793 |
'earned_marks' => 0, |
| 794 |
'attempt_status' => 'attempt_ended', |
| 795 |
'attempt_ended_at' => date( 'Y-m-d H:i:s', tutor_time() ), //phpcs:ignore |
| 796 |
); |
| 797 |
|
| 798 |
do_action( 'tutor_quiz_before_finish', $attempt_id, $quiz_id, $attempt->user_id ); |
| 799 |
$wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_info, array( 'attempt_id' => $attempt_id ) ); |
| 800 |
do_action( 'tutor_quiz_finished', $attempt_id, $quiz_id, $attempt->user_id ); |
| 801 |
|
| 802 |
wp_redirect( tutor_utils()->input_old( '_wp_http_referer' ) ); |
| 803 |
} |
| 804 |
|
| 805 |
/** |
| 806 |
* Get quiz total marks. |
| 807 |
* |
| 808 |
* @since 3.0.0 |
| 809 |
* |
| 810 |
* @param int $quiz_id quiz id. |
| 811 |
* |
| 812 |
* @return int|float |
| 813 |
*/ |
| 814 |
public static function get_quiz_total_marks( $quiz_id ) { |
| 815 |
global $wpdb; |
| 816 |
|
| 817 |
$total_marks = $wpdb->get_var( |
| 818 |
$wpdb->prepare( |
| 819 |
"SELECT SUM(question_mark) total_marks |
| 820 |
FROM {$wpdb->prefix}tutor_quiz_questions |
| 821 |
WHERE quiz_id=%d", |
| 822 |
$quiz_id |
| 823 |
) |
| 824 |
); |
| 825 |
|
| 826 |
return floatval( $total_marks ); |
| 827 |
} |
| 828 |
|
| 829 |
/** |
| 830 |
* Quiz timeout by ajax |
| 831 |
* |
| 832 |
* @since 1.0.0 |
| 833 |
* |
| 834 |
* @return void |
| 835 |
*/ |
| 836 |
public function tutor_quiz_timeout() { |
| 837 |
tutils()->checking_nonce(); |
| 838 |
|
| 839 |
global $wpdb; |
| 840 |
|
| 841 |
$quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 842 |
$attempt = tutor_utils()->is_started_quiz( $quiz_id ); |
| 843 |
|
| 844 |
if ( $attempt ) { |
| 845 |
$attempt_id = $attempt->attempt_id; |
| 846 |
|
| 847 |
$data = array( |
| 848 |
'attempt_status' => 'attempt_timeout', |
| 849 |
'total_marks' => self::get_quiz_total_marks( $quiz_id ), |
| 850 |
'earned_marks' => 0, |
| 851 |
'attempt_ended_at' => gmdate( 'Y-m-d H:i:s', tutor_time() ), |
| 852 |
); |
| 853 |
|
| 854 |
$wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $data, array( 'attempt_id' => $attempt->attempt_id ) ); |
| 855 |
|
| 856 |
do_action( 'tutor_quiz_timeout', $attempt_id, $quiz_id, $attempt->user_id ); |
| 857 |
|
| 858 |
wp_send_json_success(); |
| 859 |
} |
| 860 |
|
| 861 |
wp_send_json_error( __( 'Quiz has been timeout already', 'tutor' ) ); |
| 862 |
} |
| 863 |
|
| 864 |
/** |
| 865 |
* Review quiz answer |
| 866 |
* |
| 867 |
* @since 1.0.0 |
| 868 |
* |
| 869 |
* @return void |
| 870 |
*/ |
| 871 |
public function review_quiz_answer() { |
| 872 |
|
| 873 |
tutor_utils()->checking_nonce(); |
| 874 |
|
| 875 |
global $wpdb; |
| 876 |
|
| 877 |
$attempt_id = Input::post( 'attempt_id', 0, Input::TYPE_INT ); |
| 878 |
$context = Input::post( 'context' ); |
| 879 |
$attempt_answer_id = Input::post( 'attempt_answer_id', 0, Input::TYPE_INT ); |
| 880 |
$mark_as = Input::post( 'mark_as' ); |
| 881 |
|
| 882 |
if ( ! tutor_utils()->can_user_manage( 'attempt', $attempt_id ) || ! tutor_utils()->can_user_manage( 'attempt_answer', $attempt_answer_id ) ) { |
| 883 |
wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 884 |
} |
| 885 |
|
| 886 |
$attempt_answer = $wpdb->get_row( |
| 887 |
$wpdb->prepare( |
| 888 |
"SELECT * |
| 889 |
FROM {$wpdb->prefix}tutor_quiz_attempt_answers |
| 890 |
WHERE attempt_answer_id = %d |
| 891 |
", |
| 892 |
$attempt_answer_id |
| 893 |
) |
| 894 |
); |
| 895 |
|
| 896 |
$attempt = tutor_utils()->get_attempt( $attempt_id ); |
| 897 |
$question = QuizModel::get_quiz_question_by_id( $attempt_answer->question_id ); |
| 898 |
$course_id = $attempt->course_id; |
| 899 |
$student_id = $attempt->user_id; |
| 900 |
$previous_ans = $attempt_answer->is_correct; |
| 901 |
|
| 902 |
do_action( 'tutor_quiz_review_answer_before', $attempt_answer_id, $attempt_id, $mark_as ); |
| 903 |
|
| 904 |
if ( 'correct' === $mark_as ) { |
| 905 |
$attempt_update_data = array(); |
| 906 |
$answer_update_data = array( |
| 907 |
'achieved_mark' => $attempt_answer->question_mark, |
| 908 |
'is_correct' => 1, |
| 909 |
); |
| 910 |
|
| 911 |
$wpdb->update( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answer_update_data, array( 'attempt_answer_id' => $attempt_answer_id ) ); |
| 912 |
|
| 913 |
if ( 0 == $previous_ans || null == $previous_ans ) { |
| 914 |
// if previous answer was wrong or in review then add point as correct. |
| 915 |
$attempt_update_data = array( |
| 916 |
'earned_marks' => $attempt->earned_marks + $attempt_answer->question_mark, |
| 917 |
'is_manually_reviewed' => 1, |
| 918 |
'manually_reviewed_at' => date( 'Y-m-d H:i:s', tutor_time() ), //phpcs:ignore |
| 919 |
); |
| 920 |
} |
| 921 |
|
| 922 |
if ( 'open_ended' === $question->question_type || 'short_answer' === $question->question_type ) { |
| 923 |
$attempt_update_data['attempt_status'] = 'attempt_ended'; |
| 924 |
} |
| 925 |
|
| 926 |
if ( ! empty( $attempt_update_data ) ) { |
| 927 |
$wpdb->update( $wpdb->tutor_quiz_attempts, $attempt_update_data, array( 'attempt_id' => $attempt_id ) ); |
| 928 |
} |
| 929 |
} elseif ( 'incorrect' === $mark_as ) { |
| 930 |
$attempt_update_data = array(); |
| 931 |
$answer_update_data = array( |
| 932 |
'achieved_mark' => '0.00', |
| 933 |
'is_correct' => 0, |
| 934 |
); |
| 935 |
|
| 936 |
$wpdb->update( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answer_update_data, array( 'attempt_answer_id' => $attempt_answer_id ) ); |
| 937 |
|
| 938 |
if ( 1 == $previous_ans ) { |
| 939 |
// If previous ans was right then mynus. |
| 940 |
$attempt_update_data = array( |
| 941 |
'earned_marks' => $attempt->earned_marks - $attempt_answer->question_mark, |
| 942 |
'is_manually_reviewed' => 1, |
| 943 |
'manually_reviewed_at' => date( 'Y-m-d H:i:s', tutor_time() ),//phpcs:ignore |
| 944 |
); |
| 945 |
} |
| 946 |
|
| 947 |
if ( 'open_ended' === $question->question_type || 'short_answer' === $question->question_type ) { |
| 948 |
$attempt_update_data['attempt_status'] = 'attempt_ended'; |
| 949 |
} |
| 950 |
|
| 951 |
if ( ! empty( $attempt_update_data ) ) { |
| 952 |
$wpdb->update( $wpdb->tutor_quiz_attempts, $attempt_update_data, array( 'attempt_id' => $attempt_id ) ); |
| 953 |
} |
| 954 |
} |
| 955 |
|
| 956 |
QuizModel::update_attempt_result( $attempt_id ); |
| 957 |
|
| 958 |
do_action( 'tutor_quiz_review_answer_after', $attempt_answer_id, $attempt_id, $mark_as ); |
| 959 |
do_action( 'tutor_quiz/answer/review/after', $attempt_answer_id, $course_id, $student_id ); |
| 960 |
|
| 961 |
ob_start(); |
| 962 |
tutor_load_template_from_custom_path( |
| 963 |
tutor()->path . '/views/quiz/attempt-details.php', |
| 964 |
array( |
| 965 |
'attempt_id' => $attempt_id, |
| 966 |
'user_id' => $student_id, |
| 967 |
'context' => $context, |
| 968 |
'back_url' => Input::post( 'back_url' ), |
| 969 |
) |
| 970 |
); |
| 971 |
wp_send_json_success( array( 'html' => ob_get_clean() ) ); |
| 972 |
} |
| 973 |
|
| 974 |
/** |
| 975 |
* Do auto course complete after review a quiz attempt. |
| 976 |
* |
| 977 |
* @since 2.4.0 |
| 978 |
* |
| 979 |
* @param int $attempt_answer_id attempt answer id. |
| 980 |
* @param int $course_id course id. |
| 981 |
* @param int $user_id student id. |
| 982 |
* |
| 983 |
* @return void |
| 984 |
*/ |
| 985 |
public function do_auto_course_complete( $attempt_answer_id, $course_id, $user_id ) { |
| 986 |
if ( CourseModel::can_autocomplete_course( $course_id, $user_id ) ) { |
| 987 |
CourseModel::mark_course_as_completed( $course_id, $user_id ); |
| 988 |
Course::set_review_popup_data( $user_id, $course_id ); |
| 989 |
} |
| 990 |
} |
| 991 |
|
| 992 |
/** |
| 993 |
* Get a quiz details by id |
| 994 |
* |
| 995 |
* @return void |
| 996 |
*/ |
| 997 |
public function ajax_quiz_details() { |
| 998 |
tutor_utils()->check_nonce(); |
| 999 |
|
| 1000 |
$quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 1001 |
if ( ! tutor_utils()->can_user_manage( 'quiz', $quiz_id ) ) { |
| 1002 |
$this->json_response( |
| 1003 |
tutor_utils()->error_message(), |
| 1004 |
null, |
| 1005 |
HttpHelper::STATUS_FORBIDDEN |
| 1006 |
); |
| 1007 |
} |
| 1008 |
|
| 1009 |
$data = QuizModel::get_quiz_details( $quiz_id ); |
| 1010 |
|
| 1011 |
$data = apply_filters( 'tutor_quiz_details_response', $data, $quiz_id ); |
| 1012 |
|
| 1013 |
$this->json_response( |
| 1014 |
__( 'Quiz data fetched successfully', 'tutor' ), |
| 1015 |
$data |
| 1016 |
); |
| 1017 |
} |
| 1018 |
|
| 1019 |
/** |
| 1020 |
* Delete quiz by id |
| 1021 |
* |
| 1022 |
* @since 1.0.0 |
| 1023 |
* @since 3.0.0 refactor and response change. |
| 1024 |
* |
| 1025 |
* @return void |
| 1026 |
*/ |
| 1027 |
public function ajax_quiz_delete() { |
| 1028 |
if ( ! tutor_utils()->is_nonce_verified() ) { |
| 1029 |
$this->json_response( tutor_utils()->error_message( 'nonce' ), null, HttpHelper::STATUS_BAD_REQUEST ); |
| 1030 |
} |
| 1031 |
|
| 1032 |
global $wpdb; |
| 1033 |
|
| 1034 |
$quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 1035 |
if ( ! tutor_utils()->can_user_manage( 'quiz', $quiz_id ) ) { |
| 1036 |
$this->json_response( |
| 1037 |
tutor_utils()->error_message(), |
| 1038 |
null, |
| 1039 |
HttpHelper::STATUS_FORBIDDEN |
| 1040 |
); |
| 1041 |
} |
| 1042 |
|
| 1043 |
$post = get_post( $quiz_id ); |
| 1044 |
if ( 'tutor_quiz' !== $post->post_type ) { |
| 1045 |
$this->json_response( |
| 1046 |
__( 'Invalid quiz', 'tutor' ), |
| 1047 |
null, |
| 1048 |
HttpHelper::STATUS_BAD_REQUEST |
| 1049 |
); |
| 1050 |
} |
| 1051 |
|
| 1052 |
do_action( 'tutor_delete_quiz_before', $quiz_id ); |
| 1053 |
|
| 1054 |
$wpdb->delete( $wpdb->prefix . 'tutor_quiz_attempts', array( 'quiz_id' => $quiz_id ) ); |
| 1055 |
$wpdb->delete( $wpdb->prefix . 'tutor_quiz_attempt_answers', array( 'quiz_id' => $quiz_id ) ); |
| 1056 |
|
| 1057 |
$questions_ids = $wpdb->get_col( $wpdb->prepare( "SELECT question_id FROM {$wpdb->prefix}tutor_quiz_questions WHERE quiz_id = %d ", $quiz_id ) ); |
| 1058 |
|
| 1059 |
if ( is_array( $questions_ids ) && count( $questions_ids ) ) { |
| 1060 |
$in_question_ids = QueryHelper::prepare_in_clause( $questions_ids ); |
| 1061 |
//phpcs:disable |
| 1062 |
$wpdb->query( |
| 1063 |
"DELETE |
| 1064 |
FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 1065 |
WHERE belongs_question_id IN({$in_question_ids}) |
| 1066 |
" |
| 1067 |
); |
| 1068 |
//phpcs:enable |
| 1069 |
} |
| 1070 |
|
| 1071 |
$wpdb->delete( $wpdb->prefix . 'tutor_quiz_questions', array( 'quiz_id' => $quiz_id ) ); |
| 1072 |
|
| 1073 |
wp_delete_post( $quiz_id, true ); |
| 1074 |
|
| 1075 |
do_action( 'tutor_delete_quiz_after', $quiz_id ); |
| 1076 |
|
| 1077 |
$this->json_response( |
| 1078 |
__( 'Quiz deleted successfully', 'tutor' ), |
| 1079 |
$quiz_id |
| 1080 |
); |
| 1081 |
} |
| 1082 |
|
| 1083 |
/** |
| 1084 |
* Get answers by quiz id |
| 1085 |
* |
| 1086 |
* @since 1.0.0 |
| 1087 |
* |
| 1088 |
* @param int $question_id question id. |
| 1089 |
* @param mixed $question_type type of question. |
| 1090 |
* @param boolean $is_correct only correct answers or not. |
| 1091 |
* |
| 1092 |
* @return wpdb:get_results |
| 1093 |
*/ |
| 1094 |
private function get_answers_by_q_id( $question_id, $question_type, $is_correct = false ) { |
| 1095 |
global $wpdb; |
| 1096 |
|
| 1097 |
$correct_clause = $is_correct ? ' AND is_correct=1 ' : ''; |
| 1098 |
//phpcs:disable |
| 1099 |
return $wpdb->get_results( |
| 1100 |
$wpdb->prepare( |
| 1101 |
"SELECT * FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 1102 |
WHERE belongs_question_id = %d |
| 1103 |
AND belongs_question_type = %s |
| 1104 |
{$correct_clause} |
| 1105 |
ORDER BY answer_order ASC; |
| 1106 |
", |
| 1107 |
$question_id, |
| 1108 |
esc_sql( $question_type ) |
| 1109 |
) |
| 1110 |
); |
| 1111 |
//phpcs:enable |
| 1112 |
} |
| 1113 |
|
| 1114 |
/** |
| 1115 |
* Rendering quiz for frontend |
| 1116 |
* |
| 1117 |
* @since 1.0.0 |
| 1118 |
* |
| 1119 |
* @return void send wp_json response |
| 1120 |
*/ |
| 1121 |
public function tutor_render_quiz_content() { |
| 1122 |
|
| 1123 |
tutor_utils()->checking_nonce(); |
| 1124 |
|
| 1125 |
$quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 1126 |
|
| 1127 |
if ( ! tutor_utils()->has_enrolled_content_access( 'quiz', $quiz_id ) ) { |
| 1128 |
wp_send_json_error( array( 'message' => __( 'Access Denied.', 'tutor' ) ) ); |
| 1129 |
} |
| 1130 |
|
| 1131 |
ob_start(); |
| 1132 |
global $post; |
| 1133 |
|
| 1134 |
$post = get_post( $quiz_id ); //phpcs:ignore |
| 1135 |
setup_postdata( $post ); |
| 1136 |
|
| 1137 |
single_quiz_contents(); |
| 1138 |
wp_reset_postdata(); |
| 1139 |
|
| 1140 |
$html = ob_get_clean(); |
| 1141 |
wp_send_json_success( array( 'html' => $html ) ); |
| 1142 |
} |
| 1143 |
|
| 1144 |
/** |
| 1145 |
* Get attempt details |
| 1146 |
* |
| 1147 |
* @since 1.0.0 |
| 1148 |
* |
| 1149 |
* @param int $attempt_id required attempt id to get details. |
| 1150 |
* |
| 1151 |
* @return mixed object on success, null on failure |
| 1152 |
*/ |
| 1153 |
public static function attempt_details( int $attempt_id ) { |
| 1154 |
global $wpdb; |
| 1155 |
$attempt_details = $wpdb->get_row( |
| 1156 |
$wpdb->prepare( |
| 1157 |
"SELECT * |
| 1158 |
FROM {$wpdb->prefix}tutor_quiz_attempts |
| 1159 |
WHERE attempt_id = %d |
| 1160 |
", |
| 1161 |
$attempt_id |
| 1162 |
) |
| 1163 |
); |
| 1164 |
return $attempt_details; |
| 1165 |
} |
| 1166 |
|
| 1167 |
/** |
| 1168 |
* Update quiz attempt info |
| 1169 |
* |
| 1170 |
* @since 1.0.0 |
| 1171 |
* |
| 1172 |
* @param int $attempt_id attempt id. |
| 1173 |
* @param mixed $attempt_info serialize data. |
| 1174 |
* |
| 1175 |
* @return bool, true on success, false on failure |
| 1176 |
*/ |
| 1177 |
public static function update_attempt_info( int $attempt_id, $attempt_info ) { |
| 1178 |
global $wpdb; |
| 1179 |
$table = $wpdb->prefix . 'tutor_quiz_attempts'; |
| 1180 |
$update_info = $wpdb->update( |
| 1181 |
$table, |
| 1182 |
array( 'attempt_info' => $attempt_info ), |
| 1183 |
array( 'attempt_id' => $attempt_id ) |
| 1184 |
); |
| 1185 |
return $update_info ? true : false; |
| 1186 |
} |
| 1187 |
|
| 1188 |
/** |
| 1189 |
* Attempt delete ajax request handler |
| 1190 |
* |
| 1191 |
* @since 2.1.0 |
| 1192 |
* |
| 1193 |
* @return void wp_json response |
| 1194 |
*/ |
| 1195 |
public function attempt_delete() { |
| 1196 |
tutor_utils()->checking_nonce(); |
| 1197 |
|
| 1198 |
$attempt_id = Input::post( 'id', 0, Input::TYPE_INT ); |
| 1199 |
$attempt = tutor_utils()->get_attempt( $attempt_id ); |
| 1200 |
if ( ! $attempt ) { |
| 1201 |
wp_send_json_error( __( 'Invalid attempt ID', 'tutor' ) ); |
| 1202 |
} |
| 1203 |
|
| 1204 |
$user_id = get_current_user_id(); |
| 1205 |
$course_id = $attempt->course_id; |
| 1206 |
|
| 1207 |
if ( tutor_utils()->can_user_edit_course( $user_id, $course_id ) ) { |
| 1208 |
QuizModel::delete_quiz_attempt( $attempt_id ); |
| 1209 |
wp_send_json_success( __( 'Attempt deleted successfully!', 'tutor' ) ); |
| 1210 |
} else { |
| 1211 |
wp_send_json_error( tutor_utils()->error_message() ); |
| 1212 |
} |
| 1213 |
} |
| 1214 |
|
| 1215 |
/** |
| 1216 |
* Get all quiz attempts for a user in a specific course. |
| 1217 |
* |
| 1218 |
* @since 3.8.1 |
| 1219 |
* |
| 1220 |
* @param int $course_id The ID of the course. |
| 1221 |
* @param int $user_id The ID of the user. |
| 1222 |
* |
| 1223 |
* @return array Returns an array of quiz attempt objects with their answers, or an empty array on error. |
| 1224 |
*/ |
| 1225 |
public function get_quiz_attempts_and_answers_by_course_id( int $course_id ): array { |
| 1226 |
global $wpdb; |
| 1227 |
|
| 1228 |
$results = QueryHelper::get_all( $wpdb->tutor_quiz_attempts, array( 'course_id' => $course_id ), 'course_id', -1 ); |
| 1229 |
|
| 1230 |
if ( empty( $results ) ) { |
| 1231 |
return array(); |
| 1232 |
} |
| 1233 |
|
| 1234 |
return array_map( |
| 1235 |
function ( $item ) { |
| 1236 |
$item->quiz_attempt_answers = $this->get_quiz_attempt_answers_by_attempt_id( $item->attempt_id ); |
| 1237 |
return $item; |
| 1238 |
}, |
| 1239 |
$results |
| 1240 |
); |
| 1241 |
} |
| 1242 |
|
| 1243 |
/** |
| 1244 |
* Get all quiz attempt answers for a specific quiz attempt. |
| 1245 |
* |
| 1246 |
* @since 3.8.1 |
| 1247 |
* |
| 1248 |
* @param int $attempt_id The ID of the quiz attempt. |
| 1249 |
* |
| 1250 |
* @return array Returns an array of quiz attempt answers objects, or an empty array on error. |
| 1251 |
*/ |
| 1252 |
private function get_quiz_attempt_answers_by_attempt_id( int $attempt_id ): array { |
| 1253 |
global $wpdb; |
| 1254 |
|
| 1255 |
$results = QueryHelper::get_all( $wpdb->tutor_quiz_attempt_answers, array( 'quiz_attempt_id' => $attempt_id ), 'quiz_attempt_id', -1 ); |
| 1256 |
|
| 1257 |
if ( empty( $results ) ) { |
| 1258 |
return array(); |
| 1259 |
} |
| 1260 |
|
| 1261 |
return $results; |
| 1262 |
} |
| 1263 |
} |
| 1264 |
|
