CourseModel.php
3 years ago
LessonModel.php
3 years ago
QuizModel.php
3 years ago
WithdrawModel.php
3 years ago
QuizModel.php
790 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Quiz Model |
| 4 | * |
| 5 | * @package Tutor\Models |
| 6 | * @author Themeum <support@themeum.com> |
| 7 | * @link https://themeum.com |
| 8 | * @since 2.0.10 |
| 9 | */ |
| 10 | |
| 11 | namespace Tutor\Models; |
| 12 | |
| 13 | use Tutor\Cache\TutorCache; |
| 14 | use Tutor\Helpers\QueryHelper; |
| 15 | |
| 16 | /** |
| 17 | * Class QuizModel |
| 18 | * |
| 19 | * @since 2.0.10 |
| 20 | */ |
| 21 | class QuizModel { |
| 22 | |
| 23 | /** |
| 24 | * Get quiz table name |
| 25 | * |
| 26 | * @since 2.1.0 |
| 27 | * |
| 28 | * @return string |
| 29 | */ |
| 30 | public function get_table(): string { |
| 31 | global $wpdb; |
| 32 | return $wpdb->prefix . 'tutor_quiz_attempts'; |
| 33 | } |
| 34 | |
| 35 | /** |
| 36 | * Get all of the attempts by an user of a quiz |
| 37 | * |
| 38 | * @since 1.0.0 |
| 39 | * |
| 40 | * @param int $quiz_id quiz ID. |
| 41 | * @param int $user_id user ID. |
| 42 | * |
| 43 | * @return array|bool|null|object |
| 44 | */ |
| 45 | public function quiz_attempts( $quiz_id = 0, $user_id = 0 ) { |
| 46 | global $wpdb; |
| 47 | |
| 48 | $quiz_id = tutor_utils()->get_post_id( $quiz_id ); |
| 49 | $user_id = tutor_utils()->get_user_id( $user_id ); |
| 50 | |
| 51 | $cache_key = "tutor_quiz_attempts_for_{$user_id}_{$quiz_id}"; |
| 52 | $attempts = TutorCache::get( $cache_key ); |
| 53 | |
| 54 | if ( false === $attempts ) { |
| 55 | $attempts = $wpdb->get_results( |
| 56 | $wpdb->prepare( |
| 57 | "SELECT * |
| 58 | FROM {$wpdb->prefix}tutor_quiz_attempts |
| 59 | WHERE quiz_id = %d |
| 60 | AND user_id = %d |
| 61 | ORDER BY attempt_id DESC |
| 62 | ", |
| 63 | $quiz_id, |
| 64 | $user_id |
| 65 | ) |
| 66 | ); |
| 67 | TutorCache::set( $cache_key, $attempts ); |
| 68 | } |
| 69 | |
| 70 | if ( is_array( $attempts ) && count( $attempts ) ) { |
| 71 | return $attempts; |
| 72 | } |
| 73 | |
| 74 | return false; |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Get Quiz question by question id |
| 79 | * |
| 80 | * @since 1.0.0 |
| 81 | * |
| 82 | * @param int $question_id question ID. |
| 83 | * |
| 84 | * @return array|bool|object|void|null |
| 85 | */ |
| 86 | public static function get_quiz_question_by_id( $question_id = 0 ) { |
| 87 | global $wpdb; |
| 88 | |
| 89 | if ( $question_id ) { |
| 90 | $question = $wpdb->get_row( |
| 91 | $wpdb->prepare( |
| 92 | "SELECT * |
| 93 | FROM {$wpdb->prefix}tutor_quiz_questions |
| 94 | WHERE question_id = %d |
| 95 | LIMIT 0, 1; |
| 96 | ", |
| 97 | $question_id |
| 98 | ) |
| 99 | ); |
| 100 | |
| 101 | return $question; |
| 102 | } |
| 103 | |
| 104 | return false; |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * Get all ended attempts by an user of a quiz |
| 109 | * |
| 110 | * @since 1.4.1 |
| 111 | * |
| 112 | * @param int $quiz_id quiz ID. |
| 113 | * @param int $user_id user ID. |
| 114 | * |
| 115 | * @return array|bool|null|object |
| 116 | */ |
| 117 | public function quiz_ended_attempts( $quiz_id = 0, $user_id = 0 ) { |
| 118 | global $wpdb; |
| 119 | |
| 120 | $quiz_id = tutor_utils()->get_post_id( $quiz_id ); |
| 121 | $user_id = tutor_utils()->get_user_id( $user_id ); |
| 122 | |
| 123 | $attempts = $wpdb->get_results( |
| 124 | $wpdb->prepare( |
| 125 | "SELECT * |
| 126 | FROM {$wpdb->prefix}tutor_quiz_attempts |
| 127 | WHERE quiz_id = %d |
| 128 | AND user_id = %d |
| 129 | AND attempt_status != %s |
| 130 | ", |
| 131 | $quiz_id, |
| 132 | $user_id, |
| 133 | 'attempt_started' |
| 134 | ) |
| 135 | ); |
| 136 | |
| 137 | if ( is_array( $attempts ) && count( $attempts ) ) { |
| 138 | return $attempts; |
| 139 | } |
| 140 | |
| 141 | return false; |
| 142 | } |
| 143 | |
| 144 | /** |
| 145 | * Get the next question order ID |
| 146 | * |
| 147 | * @since 1.0.0 |
| 148 | * |
| 149 | * @param integer $quiz_id quiz ID. |
| 150 | * |
| 151 | * @return int |
| 152 | */ |
| 153 | public static function quiz_next_question_order_id( $quiz_id ) { |
| 154 | global $wpdb; |
| 155 | |
| 156 | $last_order = (int) $wpdb->get_var( |
| 157 | $wpdb->prepare( |
| 158 | "SELECT MAX(question_order) |
| 159 | FROM {$wpdb->prefix}tutor_quiz_questions |
| 160 | WHERE quiz_id = %d ; |
| 161 | ", |
| 162 | $quiz_id |
| 163 | ) |
| 164 | ); |
| 165 | |
| 166 | return $last_order + 1; |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * Get next quiz question ID |
| 171 | * |
| 172 | * @since 1.0.0 |
| 173 | * |
| 174 | * @return int |
| 175 | */ |
| 176 | public static function quiz_next_question_id() { |
| 177 | global $wpdb; |
| 178 | |
| 179 | $last_order = (int) $wpdb->get_var( "SELECT MAX(question_id) FROM {$wpdb->prefix}tutor_quiz_questions;" ); |
| 180 | return $last_order + 1; |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * Total number of quiz attempts |
| 185 | * |
| 186 | * @since 1.0.0 |
| 187 | * |
| 188 | * @param string $search_term search term. |
| 189 | * @param integer $course_id course ID. |
| 190 | * @param string $tab tab. |
| 191 | * @param string $date_filter date filter. |
| 192 | * |
| 193 | * @return int |
| 194 | */ |
| 195 | public static function get_total_quiz_attempts( $search_term = '', int $course_id = 0, string $tab = '', $date_filter = '' ) { |
| 196 | global $wpdb; |
| 197 | |
| 198 | if ( '' !== $search_term ) { |
| 199 | $search_term = '%' . $wpdb->esc_like( $search_term ) . '%'; |
| 200 | } |
| 201 | |
| 202 | // Set query based on action tab. |
| 203 | $pass_mark = "(((SUBSTRING_INDEX(SUBSTRING_INDEX(quiz_attempts.attempt_info, '\"passing_grade\";s:2:\"', -1), '\"', 1))/100)*quiz_attempts.total_marks)"; |
| 204 | $pending_count = "(SELECT COUNT(DISTINCT attempt_answer_id) FROM {$wpdb->prefix}tutor_quiz_attempt_answers WHERE quiz_attempt_id=quiz_attempts.attempt_id AND is_correct IS NULL)"; |
| 205 | |
| 206 | $tab_join = ''; |
| 207 | $tab_clause = ''; |
| 208 | if ( '' !== $tab ) { |
| 209 | $tab_join = "INNER JOIN {$wpdb->prefix}tutor_quiz_attempt_answers AS ans ON quiz_attempts.attempt_id = ans.quiz_attempt_id"; |
| 210 | } |
| 211 | switch ( $tab ) { |
| 212 | case 'pass': |
| 213 | // Just check if the earned mark is greater than pass mark. |
| 214 | // It doesn't matter if there is any pending or failed question. |
| 215 | $tab_clause = " AND quiz_attempts.earned_marks >= {$pass_mark} "; |
| 216 | break; |
| 217 | |
| 218 | case 'fail': |
| 219 | // Check if earned marks is less than pass mark and there is no pending question. |
| 220 | $tab_clause = " AND quiz_attempts.earned_marks < {$pass_mark} |
| 221 | AND {$pending_count} = 0 "; |
| 222 | break; |
| 223 | case 'pending': |
| 224 | $tab_clause = " AND {$pending_count} > 0 "; |
| 225 | break; |
| 226 | } |
| 227 | |
| 228 | $course_join = ''; |
| 229 | $course_clause = ''; |
| 230 | if ( $course_id || '' !== $search_term ) { |
| 231 | $course_join = "INNER JOIN {$wpdb->posts} AS course ON course.ID = quiz_attempts.course_id"; |
| 232 | } |
| 233 | if ( $course_id ) { |
| 234 | $course_clause = " AND quiz_attempts.course_id = $course_id"; |
| 235 | } |
| 236 | |
| 237 | $user_join = ''; |
| 238 | $user_clause = ''; |
| 239 | $search_term1 = sanitize_text_field( $search_term ); |
| 240 | $search_term2 = sanitize_text_field( $search_term ); |
| 241 | $search_term3 = sanitize_text_field( $search_term ); |
| 242 | if ( '' !== $search_term ) { |
| 243 | $user_join = "INNER JOIN {$wpdb->users} |
| 244 | ON quiz_attempts.user_id = {$wpdb->users}.ID"; |
| 245 | |
| 246 | $user_clause = "AND ( user_email LIKE '%$search_term1%' OR display_name LIKE '%$search_term2%' OR course.post_title LIKE '%$search_term3%' )"; |
| 247 | } |
| 248 | |
| 249 | if ( '' !== $date_filter ) { |
| 250 | $date_filter = '' != $date_filter ? tutor_get_formated_date( 'Y-m-d', $date_filter ) : ''; |
| 251 | $date_filter = '' != $date_filter ? " AND DATE(quiz_attempts.attempt_started_at) = '$date_filter' " : ''; |
| 252 | } |
| 253 | |
| 254 | //phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
| 255 | $count = $wpdb->get_var( |
| 256 | $wpdb->prepare( |
| 257 | "SELECT COUNT( DISTINCT attempt_id) |
| 258 | FROM {$wpdb->prefix}tutor_quiz_attempts quiz_attempts |
| 259 | INNER JOIN {$wpdb->posts} quiz |
| 260 | ON quiz_attempts.quiz_id = quiz.ID |
| 261 | {$user_join} |
| 262 | {$course_join} |
| 263 | {$tab_join} |
| 264 | WHERE attempt_status != %s |
| 265 | {$user_clause} |
| 266 | {$course_clause} |
| 267 | {$tab_clause} |
| 268 | {$date_filter} |
| 269 | ", |
| 270 | 'attempt_started' |
| 271 | ) |
| 272 | ); |
| 273 | |
| 274 | //phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
| 275 | |
| 276 | return (int) $count; |
| 277 | } |
| 278 | |
| 279 | /** |
| 280 | * Get the all quiz attempts |
| 281 | * |
| 282 | * @since 1.0.0 |
| 283 | * @since 1.9.5 sorting paramas added |
| 284 | * |
| 285 | * @param integer $start start. |
| 286 | * @param integer $limit limit. |
| 287 | * @param string $search_filter search filter. |
| 288 | * @param string $course_filter course filter. |
| 289 | * @param string $date_filter date filter. |
| 290 | * @param string $order_filter order filter. |
| 291 | * @param mixed $result_state result state. |
| 292 | * @param boolean $count_only count only or not. |
| 293 | * @param boolean $instructor_id_check need instructor id check or not. |
| 294 | * |
| 295 | * @return mixed |
| 296 | */ |
| 297 | public static function get_quiz_attempts( $start = 0, $limit = 10, $search_filter = '', $course_filter = array(), $date_filter = '', $order_filter = 'DESC', $result_state = null, $count_only = false, $instructor_id_check = false ) { |
| 298 | global $wpdb; |
| 299 | |
| 300 | $start = sanitize_text_field( $start ); |
| 301 | $limit = sanitize_text_field( $limit ); |
| 302 | $search_filter = sanitize_text_field( $search_filter ); |
| 303 | $course_filter = sanitize_text_field( $course_filter ); |
| 304 | $date_filter = sanitize_text_field( $date_filter ); |
| 305 | $order_filter = sanitize_sql_orderby( $order_filter ); |
| 306 | |
| 307 | $search_term_raw = $search_filter; |
| 308 | $search_filter = '%' . $wpdb->esc_like( $search_filter ) . '%'; |
| 309 | |
| 310 | // Filter by course. |
| 311 | if ( '' != $course_filter ) { |
| 312 | ! is_array( $course_filter ) ? $course_filter = array( $course_filter ) : 0; |
| 313 | $course_ids = implode( ',', array_map('intval', $course_filter )); |
| 314 | $course_filter = " AND quiz_attempts.course_id IN ($course_ids) "; |
| 315 | } |
| 316 | |
| 317 | // Filter by date. |
| 318 | $date_filter = '' != $date_filter ? tutor_get_formated_date( 'Y-m-d', $date_filter ) : ''; |
| 319 | $date_filter = '' != $date_filter ? " AND DATE(quiz_attempts.attempt_started_at) = '$date_filter' " : ''; |
| 320 | |
| 321 | $result_clause = ''; |
| 322 | $select_columns = $count_only ? 'COUNT(DISTINCT quiz_attempts.attempt_id)' : 'DISTINCT quiz_attempts.*, quiz.post_title, users.user_email, users.user_login, users.display_name'; |
| 323 | $limit_offset = $count_only ? '' : ' LIMIT ' . $limit . ' OFFSET ' . $start; |
| 324 | |
| 325 | $pass_mark = "(((SUBSTRING_INDEX(SUBSTRING_INDEX(quiz_attempts.attempt_info, '\"passing_grade\";s:2:\"', -1), '\"', 1))/100)*quiz_attempts.total_marks)"; |
| 326 | $pending_count = "(SELECT COUNT(DISTINCT attempt_answer_id) FROM {$wpdb->prefix}tutor_quiz_attempt_answers WHERE quiz_attempt_id=quiz_attempts.attempt_id AND is_correct IS NULL)"; |
| 327 | |
| 328 | // Get attempts by instructor ID. |
| 329 | $instructor_clause = ''; |
| 330 | $instructor_join = ''; |
| 331 | if ( $instructor_id_check ) { |
| 332 | $current_user_id = get_current_user_id(); |
| 333 | $instructor_id = tutor_utils()->has_user_role( 'administrator', $current_user_id ) ? null : $current_user_id; |
| 334 | |
| 335 | if ( $instructor_id ) { |
| 336 | // $instructor_clause = " AND (instructor_meta.meta_key='_tutor_instructor_course_id' AND instructor_meta.user_id=$instructor_id)"; |
| 337 | $instructor_clause = " INNER JOIN {$wpdb->prefix}usermeta AS instructor_meta ON course.ID = instructor_meta.meta_value AND (instructor_meta.meta_key='_tutor_instructor_course_id' AND instructor_meta.user_id=$instructor_id) "; |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | // Switc hthrough result state and assign meta clause. |
| 342 | switch ( $result_state ) { |
| 343 | case 'pass': |
| 344 | // Just check if the earned mark is greater than pass mark. |
| 345 | // It doesn't matter if there is any pending or failed question. |
| 346 | $result_clause = " AND quiz_attempts.earned_marks>={$pass_mark} "; |
| 347 | break; |
| 348 | |
| 349 | case 'fail': |
| 350 | // Check if earned marks is less than pass mark and there is no pending question. |
| 351 | $result_clause = " AND quiz_attempts.earned_marks<{$pass_mark} |
| 352 | AND {$pending_count}=0 "; |
| 353 | break; |
| 354 | |
| 355 | case 'pending': |
| 356 | $result_clause = " AND {$pending_count}>0 "; |
| 357 | break; |
| 358 | } |
| 359 | |
| 360 | //phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
| 361 | $query = $wpdb->prepare( |
| 362 | "SELECT {$select_columns} |
| 363 | FROM {$wpdb->prefix}tutor_quiz_attempts quiz_attempts |
| 364 | INNER JOIN {$wpdb->posts} quiz ON quiz_attempts.quiz_id = quiz.ID |
| 365 | INNER JOIN {$wpdb->users} AS users ON quiz_attempts.user_id = users.ID |
| 366 | INNER JOIN {$wpdb->posts} AS course ON course.ID = quiz_attempts.course_id |
| 367 | INNER JOIN {$wpdb->prefix}tutor_quiz_attempt_answers AS ans ON quiz_attempts.attempt_id = ans.quiz_attempt_id |
| 368 | {$instructor_clause} |
| 369 | WHERE quiz_attempts.attempt_ended_at IS NOT NULL |
| 370 | AND ( |
| 371 | users.user_email = %s |
| 372 | OR users.display_name LIKE %s |
| 373 | OR quiz.post_title LIKE %s |
| 374 | OR course.post_title LIKE %s |
| 375 | ) |
| 376 | AND quiz_attempts.attempt_ended_at IS NOT NULL |
| 377 | {$result_clause} |
| 378 | {$course_filter} |
| 379 | {$date_filter} |
| 380 | ORDER BY quiz_attempts.attempt_ended_at {$order_filter} {$limit_offset}", |
| 381 | $search_term_raw, |
| 382 | $search_filter, |
| 383 | $search_filter, |
| 384 | $search_filter |
| 385 | ); |
| 386 | |
| 387 | //phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
| 388 | |
| 389 | //phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared |
| 390 | return $count_only ? $wpdb->get_var( $query ) : $wpdb->get_results( $query ); |
| 391 | } |
| 392 | |
| 393 | /** |
| 394 | * Delete quizattempt for user |
| 395 | * |
| 396 | * @since 1.9.5 |
| 397 | * |
| 398 | * @param mixed $attempt_ids attempt ids. |
| 399 | * |
| 400 | * @return void |
| 401 | */ |
| 402 | public static function delete_quiz_attempt( $attempt_ids ) { |
| 403 | global $wpdb; |
| 404 | |
| 405 | // Singlular to array. |
| 406 | ! is_array( $attempt_ids ) ? $attempt_ids = array( $attempt_ids ) : 0; |
| 407 | |
| 408 | if ( count( $attempt_ids ) ) { |
| 409 | $attempt_ids = implode( ',', $attempt_ids ); |
| 410 | |
| 411 | //phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
| 412 | // Deleting attempt (comment), child attempt and attempt meta (comment meta). |
| 413 | $wpdb->query( "DELETE FROM {$wpdb->prefix}tutor_quiz_attempts WHERE attempt_id IN($attempt_ids)" ); |
| 414 | $wpdb->query( "DELETE FROM {$wpdb->prefix}tutor_quiz_attempt_answers WHERE quiz_attempt_id IN($attempt_ids)" ); |
| 415 | //phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
| 416 | |
| 417 | do_action( 'tutor_quiz/attempt_deleted', $attempt_ids ); |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | /** |
| 422 | * Sorting params added on quiz attempt |
| 423 | * |
| 424 | * @since 1.9.5 |
| 425 | * |
| 426 | * @param integer $start start. |
| 427 | * @param integer $limit limit. |
| 428 | * @param array $course_ids course ids. |
| 429 | * @param string $search_filter search filter. |
| 430 | * @param string $course_filter course filter. |
| 431 | * @param string $date_filter date filter. |
| 432 | * @param string $order_filter order filter. |
| 433 | * @param mixed $user_id user id. |
| 434 | * @param boolean $count_only is only count or not. |
| 435 | * @param boolean $all_attempt need all atempt or not. |
| 436 | * |
| 437 | * @return mixed |
| 438 | */ |
| 439 | public static function get_quiz_attempts_by_course_ids( $start = 0, $limit = 10, $course_ids = array(), $search_filter = '', $course_filter = '', $date_filter = '', $order_filter = '', $user_id = null, $count_only = false, $all_attempt = false ) { |
| 440 | global $wpdb; |
| 441 | $search_filter = sanitize_text_field( $search_filter ); |
| 442 | $course_filter = sanitize_text_field( $course_filter ); |
| 443 | $date_filter = sanitize_text_field( $date_filter ); |
| 444 | |
| 445 | $course_ids = array_map( |
| 446 | function ( $id ) { |
| 447 | return "'" . esc_sql( $id ) . "'"; |
| 448 | }, |
| 449 | $course_ids |
| 450 | ); |
| 451 | |
| 452 | $course_ids_in = count( $course_ids ) ? ' AND quiz_attempts.course_id IN (' . implode( ', ', $course_ids ) . ') ' : ''; |
| 453 | |
| 454 | $search_filter = $search_filter ? '%' . $wpdb->esc_like( $search_filter ) . '%' : ''; |
| 455 | $search_term_raw = $search_filter; |
| 456 | $search_filter = $search_filter ? "AND ( users.user_email = '{$search_term_raw}' OR users.display_name LIKE {$search_filter} OR quiz.post_title LIKE {$search_filter} OR course.post_title LIKE {$search_filter} )" : ''; |
| 457 | |
| 458 | $course_filter = '' != $course_filter ? " AND quiz_attempts.course_id = $course_filter " : ''; |
| 459 | $date_filter = '' != $date_filter ? tutor_get_formated_date( 'Y-m-d', $date_filter ) : ''; |
| 460 | $date_filter = '' != $date_filter ? " AND DATE(quiz_attempts.attempt_started_at) = '$date_filter' " : ''; |
| 461 | $user_filter = $user_id ? ' AND user_id=\'' . esc_sql( $user_id ) . '\' ' : ''; |
| 462 | |
| 463 | $limit_offset = $count_only ? '' : " LIMIT {$start}, {$limit} "; |
| 464 | $select_col = $count_only ? ' COUNT(DISTINCT quiz_attempts.attempt_id) ' : ' quiz_attempts.*, users.*, quiz.* '; |
| 465 | |
| 466 | $attempt_type = $all_attempt ? '' : " AND quiz_attempts.attempt_status != 'attempt_started' "; |
| 467 | |
| 468 | $query = "SELECT {$select_col} |
| 469 | FROM {$wpdb->prefix}tutor_quiz_attempts AS quiz_attempts |
| 470 | INNER JOIN {$wpdb->posts} AS quiz |
| 471 | ON quiz_attempts.quiz_id = quiz.ID |
| 472 | INNER JOIN {$wpdb->users} AS users |
| 473 | ON quiz_attempts.user_id = users.ID |
| 474 | INNER JOIN {$wpdb->posts} AS course |
| 475 | ON course.ID = quiz_attempts.course_id |
| 476 | WHERE 1=1 |
| 477 | {$attempt_type} |
| 478 | {$course_ids_in} |
| 479 | {$search_filter} |
| 480 | {$course_filter} |
| 481 | {$date_filter} |
| 482 | {$user_filter} |
| 483 | ORDER BY quiz_attempts.attempt_id {$order_filter} {$limit_offset};"; |
| 484 | |
| 485 | //phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared |
| 486 | return $count_only ? $wpdb->get_var( $query ) : $wpdb->get_results( $query ); |
| 487 | } |
| 488 | |
| 489 | /** |
| 490 | * Get answers list by quiz question |
| 491 | * |
| 492 | * @since 1.0.0 |
| 493 | * |
| 494 | * @param int $question_id question ID. |
| 495 | * @param bool $rand rand. |
| 496 | * |
| 497 | * @return array|bool|null|object |
| 498 | */ |
| 499 | public static function get_answers_by_quiz_question( $question_id, $rand = false ) { |
| 500 | global $wpdb; |
| 501 | |
| 502 | $question = $wpdb->get_row( |
| 503 | $wpdb->prepare( |
| 504 | "SELECT * |
| 505 | FROM {$wpdb->prefix}tutor_quiz_questions |
| 506 | WHERE question_id = %d; |
| 507 | ", |
| 508 | $question_id |
| 509 | ) |
| 510 | ); |
| 511 | |
| 512 | if ( ! $question ) { |
| 513 | return false; |
| 514 | } |
| 515 | |
| 516 | $order = ' answer_order ASC '; |
| 517 | if ( 'ordering' === $question->question_type ) { |
| 518 | $order = ' RAND() '; |
| 519 | } |
| 520 | |
| 521 | if ( $rand ) { |
| 522 | $order = ' RAND() '; |
| 523 | } |
| 524 | |
| 525 | //phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
| 526 | $answers = $wpdb->get_results( |
| 527 | $wpdb->prepare( |
| 528 | "SELECT * |
| 529 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 530 | WHERE belongs_question_id = %d |
| 531 | AND belongs_question_type = %s |
| 532 | ORDER BY {$order} |
| 533 | ", |
| 534 | $question_id, |
| 535 | $question->question_type |
| 536 | ) |
| 537 | ); |
| 538 | //phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
| 539 | |
| 540 | return $answers; |
| 541 | } |
| 542 | |
| 543 | /** |
| 544 | * Get quiz answers by attempt id |
| 545 | * |
| 546 | * @since 1.0.0 |
| 547 | * |
| 548 | * @param mixed $attempt_id attempt ID. |
| 549 | * @param bool $add_index need index or not. |
| 550 | * |
| 551 | * @return array|null|object |
| 552 | */ |
| 553 | public static function get_quiz_answers_by_attempt_id( $attempt_id, $add_index = false ) { |
| 554 | global $wpdb; |
| 555 | |
| 556 | $ids = is_array( $attempt_id ) ? $attempt_id : array( $attempt_id ); |
| 557 | $ids_in = implode( ',', $ids ); |
| 558 | |
| 559 | if ( empty( $ids_in ) ) { |
| 560 | // Prevent empty. |
| 561 | return array(); |
| 562 | } |
| 563 | |
| 564 | //phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
| 565 | $results = $wpdb->get_results( |
| 566 | "SELECT answers.*, |
| 567 | question.* |
| 568 | FROM {$wpdb->prefix}tutor_quiz_attempt_answers answers |
| 569 | LEFT JOIN {$wpdb->prefix}tutor_quiz_questions question |
| 570 | ON answers.question_id = question.question_id |
| 571 | WHERE answers.quiz_attempt_id IN ({$ids_in}) |
| 572 | ORDER BY attempt_answer_id ASC;" |
| 573 | ); |
| 574 | //phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
| 575 | |
| 576 | if ( $add_index ) { |
| 577 | $new_array = array(); |
| 578 | |
| 579 | foreach ( $results as $result ) { |
| 580 | ! isset( $new_array[ $result->quiz_attempt_id ] ) ? $new_array[ $result->quiz_attempt_id ] = array() : 0; |
| 581 | $new_array[ $result->quiz_attempt_id ][] = $result; |
| 582 | } |
| 583 | |
| 584 | return $new_array; |
| 585 | } |
| 586 | |
| 587 | return $results; |
| 588 | } |
| 589 | |
| 590 | /** |
| 591 | * Get single answer by answer_id |
| 592 | * |
| 593 | * @since 1.0.0 |
| 594 | * |
| 595 | * @param array|init $answer_id answer id. |
| 596 | * |
| 597 | * @return array|null|object |
| 598 | */ |
| 599 | public static function get_answer_by_id( $answer_id ) { |
| 600 | global $wpdb; |
| 601 | |
| 602 | ! is_array( $answer_id ) ? $answer_id = array( $answer_id ) : 0; |
| 603 | |
| 604 | $answer_id = array_map( |
| 605 | function ( $id ) { |
| 606 | return "'" . esc_sql( $id ) . "'"; |
| 607 | }, |
| 608 | $answer_id |
| 609 | ); |
| 610 | |
| 611 | $in_ids_string = implode( ', ', $answer_id ); |
| 612 | |
| 613 | //phpcs:disable WordPress.DB.PreparedSQL.NotPrepared |
| 614 | $answer = $wpdb->get_results( |
| 615 | $wpdb->prepare( |
| 616 | "SELECT answer.*, |
| 617 | question.question_title, |
| 618 | question.question_type |
| 619 | FROM {$wpdb->prefix}tutor_quiz_question_answers answer |
| 620 | LEFT JOIN {$wpdb->prefix}tutor_quiz_questions question |
| 621 | ON answer.belongs_question_id = question.question_id |
| 622 | WHERE answer.answer_id IN (" . $in_ids_string . ') |
| 623 | AND 1 = %d; |
| 624 | ', |
| 625 | 1 |
| 626 | ) |
| 627 | ); |
| 628 | //phpcs:enable WordPress.DB.PreparedSQL.NotPrepared |
| 629 | |
| 630 | return $answer; |
| 631 | } |
| 632 | |
| 633 | /** |
| 634 | * Get quiz attempt timing |
| 635 | * |
| 636 | * @since 1.0.0 |
| 637 | * |
| 638 | * @param mixed $attempt_data attempt data. |
| 639 | * @return array |
| 640 | */ |
| 641 | public static function get_quiz_attempt_timing( $attempt_data ) { |
| 642 | $attempt_duration = ''; |
| 643 | $attempt_duration_taken = ''; |
| 644 | $attempt_info = @unserialize( $attempt_data->attempt_info ); |
| 645 | if ( is_array( $attempt_info ) ) { |
| 646 | // Allowed duration. |
| 647 | if ( isset( $attempt_info['time_limit'] ) ) { |
| 648 | //phpcs:ignore WordPress.WP.I18n.NonSingularStringLiteralText |
| 649 | $time_type = __( ucwords( tutor_utils()->array_get( 'time_limit.time_type', $attempt_info, 'minutes' ) ), 'tutor' ); |
| 650 | $time_value = tutor_utils()->array_get( 'time_limit.time_value', $attempt_info, 0 ); |
| 651 | $attempt_duration = $time_value . ' ' . $time_type; |
| 652 | } |
| 653 | |
| 654 | // Taken duration. |
| 655 | $seconds = strtotime( $attempt_data->attempt_ended_at ) - strtotime( $attempt_data->attempt_started_at ); |
| 656 | $attempt_duration_taken = tutor_utils()->seconds_to_time( $seconds ); |
| 657 | } |
| 658 | |
| 659 | return compact( 'attempt_duration', 'attempt_duration_taken' ); |
| 660 | } |
| 661 | |
| 662 | /** |
| 663 | * Check student is passed in a quiz or not. |
| 664 | * Quiz retry mode: student required at least one quiz passed in attempts |
| 665 | * |
| 666 | * @since 2.1.0 |
| 667 | * |
| 668 | * @param int $quiz_id quiz ID. |
| 669 | * @param int $user_id user ID. |
| 670 | * |
| 671 | * @return boolean |
| 672 | */ |
| 673 | public static function is_quiz_passed( $quiz_id, $user_id = 0 ) { |
| 674 | global $wpdb; |
| 675 | |
| 676 | $user_id = tutor_utils()->get_user_id( $user_id ); |
| 677 | $attempts = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM {$wpdb->prefix}tutor_quiz_attempts WHERE user_id=%d AND quiz_id=%d", $user_id, $quiz_id ) ); |
| 678 | $required_percentage = tutor_utils()->get_quiz_option( $quiz_id, 'passing_grade', 0 ); |
| 679 | |
| 680 | foreach ( $attempts as $attempt ) { |
| 681 | $earned_percentage = $attempt->earned_marks > 0 ? ( ( $attempt->earned_marks * 100 ) / $attempt->total_marks ) : 0; |
| 682 | if ( $earned_percentage >= $required_percentage ) { |
| 683 | return true; |
| 684 | } |
| 685 | } |
| 686 | |
| 687 | return false; |
| 688 | } |
| 689 | |
| 690 | /** |
| 691 | * Get all question type for a quiz |
| 692 | * |
| 693 | * @since 2.1.0 |
| 694 | * |
| 695 | * @param integer $quiz_id quiz ID. |
| 696 | * |
| 697 | * @return array |
| 698 | */ |
| 699 | public static function get_quiz_question_types( int $quiz_id ) { |
| 700 | global $wpdb; |
| 701 | $types = $wpdb->get_col( |
| 702 | $wpdb->prepare( "SELECT DISTINCT question_type FROM {$wpdb->prefix}tutor_quiz_questions WHERE quiz_id=%d", $quiz_id ) |
| 703 | ); |
| 704 | |
| 705 | return $types; |
| 706 | } |
| 707 | |
| 708 | /** |
| 709 | * Check a quiz attempt need manual review or not |
| 710 | * |
| 711 | * @since 2.1.0 |
| 712 | * |
| 713 | * @param int $quiz_id quiz ID. |
| 714 | * |
| 715 | * @return boolean |
| 716 | */ |
| 717 | public static function is_manual_review_required( $quiz_id ) { |
| 718 | $required = false; |
| 719 | $review_question_types = array( 'open_ended', 'short_answer' ); |
| 720 | $question_types = self::get_quiz_question_types( $quiz_id ); |
| 721 | |
| 722 | foreach ( $review_question_types as $type ) { |
| 723 | if ( in_array( $type, $question_types, true ) ) { |
| 724 | $required = true; |
| 725 | break; |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | return $required; |
| 730 | } |
| 731 | |
| 732 | /** |
| 733 | * Get last or first quiz attempt |
| 734 | * |
| 735 | * @since 2.1.0 |
| 736 | * @since 2.1.3 user_id param added. |
| 737 | * |
| 738 | * @param integer $quiz_id quiz id to get attempt of. |
| 739 | * @param integer $user_id user ID who attempt the quiz. |
| 740 | * @param string $order ASC or DESC, default is DESC |
| 741 | * pass ASC to get first attempt. |
| 742 | * |
| 743 | * @return mixed object on success, null on failure |
| 744 | */ |
| 745 | public function get_first_or_last_attempt( int $quiz_id, int $user_id = 0, string $order = 'DESC' ) { |
| 746 | $attempt = QueryHelper::get_row( |
| 747 | $this->get_table(), |
| 748 | array( |
| 749 | 'quiz_id' => $quiz_id, |
| 750 | 'user_id' => tutor_utils()->get_user_id( $user_id ), |
| 751 | ), |
| 752 | 'attempt_id', |
| 753 | $order |
| 754 | ); |
| 755 | return $attempt; |
| 756 | } |
| 757 | |
| 758 | /** |
| 759 | * Get total number of quizzes by course id |
| 760 | * |
| 761 | * @since 2.2.0 |
| 762 | * |
| 763 | * @param int|array $course_id Course id or array of course ids. |
| 764 | * |
| 765 | * @return int |
| 766 | */ |
| 767 | public static function get_quiz_count_by_course( $course_id ) { |
| 768 | global $wpdb; |
| 769 | |
| 770 | $and_clause = is_array( $course_id ) && count( $course_id ) ? ' AND post_parent IN (' . QueryHelper::prepare_in_clause( $course_id ) . ')' : "AND post_parent = $course_id"; |
| 771 | |
| 772 | $count = $wpdb->get_var( |
| 773 | "SELECT |
| 774 | COUNT(ID) |
| 775 | FROM {$wpdb->posts} |
| 776 | WHERE post_parent IN |
| 777 | (SELECT |
| 778 | ID |
| 779 | FROM {$wpdb->posts} |
| 780 | WHERE post_type='topics' |
| 781 | {$and_clause} |
| 782 | AND post_status = 'publish' |
| 783 | ) |
| 784 | AND post_type ='tutor_quiz' |
| 785 | AND post_status = 'publish'" |
| 786 | ); |
| 787 | return $count ? $count : 0; |
| 788 | } |
| 789 | } |
| 790 |