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Post_types.php
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Private_Course_Access.php
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Q_and_A.php
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Question_Answers_List.php
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Quiz.php
3 years ago
Quiz_Attempts_List.php
3 years ago
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Quiz.php
1663 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\QueryHelper; |
| 18 | use Tutor\Models\CourseModel; |
| 19 | use Tutor\Models\QuizModel; |
| 20 | /** |
| 21 | * Manage quiz operations. |
| 22 | * |
| 23 | * @since 1.0.0 |
| 24 | */ |
| 25 | class Quiz { |
| 26 | |
| 27 | /** |
| 28 | * Allowed attrs |
| 29 | * |
| 30 | * @var array |
| 31 | */ |
| 32 | private $allowed_attributes = array( |
| 33 | 'src' => array(), |
| 34 | 'style' => array(), |
| 35 | 'class' => array(), |
| 36 | 'id' => array(), |
| 37 | 'href' => array(), |
| 38 | 'alt' => array(), |
| 39 | 'title' => array(), |
| 40 | 'type' => array(), |
| 41 | 'controls' => array(), |
| 42 | 'muted' => array(), |
| 43 | 'loop' => array(), |
| 44 | 'poster' => array(), |
| 45 | 'preload' => array(), |
| 46 | 'autoplay' => array(), |
| 47 | 'width' => array(), |
| 48 | 'height' => array(), |
| 49 | ); |
| 50 | |
| 51 | /** |
| 52 | * Allowed HTML tags |
| 53 | * |
| 54 | * @var array |
| 55 | */ |
| 56 | private $allowed_html = array( 'img', 'b', 'i', 'br', 'a', 'audio', 'video', 'source' ); |
| 57 | |
| 58 | /** |
| 59 | * Register hooks |
| 60 | * |
| 61 | * @since 1.0.0 |
| 62 | * |
| 63 | * @return void |
| 64 | */ |
| 65 | public function __construct() { |
| 66 | add_action( 'save_post_tutor_quiz', array( $this, 'save_quiz_meta' ) ); |
| 67 | add_action( 'wp_ajax_remove_quiz_from_post', array( $this, 'remove_quiz_from_post' ) ); |
| 68 | |
| 69 | add_action( 'wp_ajax_tutor_quiz_timeout', array( $this, 'tutor_quiz_timeout' ) ); |
| 70 | |
| 71 | // User take the quiz. |
| 72 | add_action( 'template_redirect', array( $this, 'start_the_quiz' ) ); |
| 73 | add_action( 'template_redirect', array( $this, 'answering_quiz' ) ); |
| 74 | add_action( 'template_redirect', array( $this, 'finishing_quiz_attempt' ) ); |
| 75 | |
| 76 | add_action( 'wp_ajax_review_quiz_answer', array( $this, 'review_quiz_answer' ) ); |
| 77 | // Instructor Feedback Action. |
| 78 | add_action( 'wp_ajax_tutor_instructor_feedback', array( $this, 'tutor_instructor_feedback' ) ); |
| 79 | |
| 80 | /** |
| 81 | * New Design Quiz |
| 82 | */ |
| 83 | |
| 84 | add_action( 'wp_ajax_tutor_quiz_save', array( $this, 'tutor_quiz_save' ) ); |
| 85 | add_action( 'wp_ajax_tutor_delete_quiz_by_id', array( $this, 'tutor_delete_quiz_by_id' ) ); |
| 86 | add_action( 'wp_ajax_tutor_load_quiz_builder_modal', array( $this, 'tutor_load_quiz_builder_modal' ), 10, 0 ); |
| 87 | add_action( 'wp_ajax_tutor_quiz_builder_get_question_form', array( $this, 'tutor_quiz_builder_get_question_form' ) ); |
| 88 | add_action( 'wp_ajax_tutor_quiz_modal_update_question', array( $this, 'tutor_quiz_modal_update_question' ) ); |
| 89 | add_action( 'wp_ajax_tutor_quiz_builder_question_delete', array( $this, 'tutor_quiz_builder_question_delete' ) ); |
| 90 | add_action( 'wp_ajax_tutor_quiz_question_answer_editor', array( $this, 'tutor_quiz_question_answer_editor' ) ); |
| 91 | add_action( 'wp_ajax_tutor_save_quiz_answer_options', array( $this, 'tutor_save_quiz_answer_options' ), 10, 0 ); |
| 92 | add_action( 'wp_ajax_tutor_update_quiz_answer_options', array( $this, 'tutor_update_quiz_answer_options' ) ); |
| 93 | add_action( 'wp_ajax_tutor_quiz_builder_change_type', array( $this, 'tutor_quiz_builder_change_type' ) ); |
| 94 | add_action( 'wp_ajax_tutor_quiz_builder_delete_answer', array( $this, 'tutor_quiz_builder_delete_answer' ) ); |
| 95 | add_action( 'wp_ajax_tutor_quiz_question_sorting', array( $this, 'tutor_quiz_question_sorting' ) ); |
| 96 | add_action( 'wp_ajax_tutor_quiz_answer_sorting', array( $this, 'tutor_quiz_answer_sorting' ) ); |
| 97 | add_action( 'wp_ajax_tutor_mark_answer_as_correct', array( $this, 'tutor_mark_answer_as_correct' ) ); |
| 98 | |
| 99 | /** |
| 100 | * Frontend Stuff |
| 101 | */ |
| 102 | add_action( 'wp_ajax_tutor_render_quiz_content', array( $this, 'tutor_render_quiz_content' ) ); |
| 103 | |
| 104 | /** |
| 105 | * Quiz abandon action |
| 106 | * |
| 107 | * @since 1.9.6 |
| 108 | */ |
| 109 | add_action( 'wp_ajax_tutor_quiz_abandon', array( $this, 'tutor_quiz_abandon' ) ); |
| 110 | |
| 111 | $this->prepare_allowed_html(); |
| 112 | |
| 113 | /** |
| 114 | * Delete quiz attempt |
| 115 | * |
| 116 | * @since 2.1.0 |
| 117 | */ |
| 118 | add_action( 'wp_ajax_tutor_attempt_delete', array( $this, 'attempt_delete' ) ); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Prepare allowed HTML |
| 123 | * |
| 124 | * @since 1.0.0 |
| 125 | * |
| 126 | * @return void |
| 127 | */ |
| 128 | private function prepare_allowed_html() { |
| 129 | |
| 130 | $allowed = array(); |
| 131 | |
| 132 | foreach ( $this->allowed_html as $tag ) { |
| 133 | $allowed[ $tag ] = $this->allowed_attributes; |
| 134 | } |
| 135 | |
| 136 | $this->allowed_html = $allowed; |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * Instructor feedback ajax request handler |
| 141 | * |
| 142 | * @since 1.0.0 |
| 143 | * |
| 144 | * @return void | send json response |
| 145 | */ |
| 146 | public function tutor_instructor_feedback() { |
| 147 | tutor_utils()->checking_nonce(); |
| 148 | |
| 149 | // Check if user is privileged. |
| 150 | if ( ! current_user_can( 'administrator' ) || ! current_user_can( tutor()->instructor_role ) ) { |
| 151 | wp_send_json_error( tutor_utils()->error_message() ); |
| 152 | } |
| 153 | |
| 154 | $attempt_details = self::attempt_details( Input::post( 'attempt_id', 0, Input::TYPE_INT ) ); |
| 155 | $feedback = Input::post( 'feedback', '', Input::TYPE_KSES_POST ); |
| 156 | $attempt_info = isset( $attempt_details->attempt_info ) ? $attempt_details->attempt_info : false; |
| 157 | if ( $attempt_info ) { |
| 158 | //phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_unserialize |
| 159 | $unserialized = unserialize( $attempt_details->attempt_info ); |
| 160 | if ( is_array( $unserialized ) ) { |
| 161 | $unserialized['instructor_feedback'] = $feedback; |
| 162 | |
| 163 | do_action( 'tutor_quiz/attempt/submitted/feedback', $attempt_details->attempt_id ); |
| 164 | //phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_serialize |
| 165 | $update = self::update_attempt_info( $attempt_details->attempt_id, serialize( $unserialized ) ); |
| 166 | if ( $update ) { |
| 167 | wp_send_json_success(); |
| 168 | } else { |
| 169 | wp_send_json_error(); |
| 170 | } |
| 171 | } else { |
| 172 | wp_send_json_error( __( 'Invalid quiz info' ) ); |
| 173 | } |
| 174 | } |
| 175 | wp_send_json_error(); |
| 176 | } |
| 177 | |
| 178 | /** |
| 179 | * Update quiz meta |
| 180 | * |
| 181 | * @since 1.0.0 |
| 182 | * |
| 183 | * @param int $post_ID post id. |
| 184 | * @return void |
| 185 | */ |
| 186 | public function save_quiz_meta( $post_ID ) { |
| 187 | //phpcs:ignore WordPress.Security.NonceVerification.Missing |
| 188 | if ( isset( $_POST['quiz_option'] ) ) { |
| 189 | $quiz_option = tutor_utils()->sanitize_array( $_POST['quiz_option'] ); //phpcs:ignore |
| 190 | update_post_meta( $post_ID, 'tutor_quiz_option', $quiz_option ); |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Remove quiz from post |
| 196 | * |
| 197 | * @since 1.0.0 |
| 198 | * |
| 199 | * @return void |
| 200 | */ |
| 201 | public function remove_quiz_from_post() { |
| 202 | tutor_utils()->checking_nonce(); |
| 203 | |
| 204 | global $wpdb; |
| 205 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 206 | |
| 207 | if ( ! tutor_utils()->can_user_manage( 'quiz', $quiz_id ) ) { |
| 208 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 209 | } |
| 210 | |
| 211 | $wpdb->update( $wpdb->posts, array( 'post_parent' => 0 ), array( 'ID' => $quiz_id ) ); |
| 212 | wp_send_json_success(); |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * Start Quiz from here... |
| 217 | * |
| 218 | * @since 1.0.0 |
| 219 | * |
| 220 | * @return void |
| 221 | */ |
| 222 | public function start_the_quiz() { |
| 223 | if ( Input::post( 'tutor_action' ) !== 'tutor_start_quiz' ) { |
| 224 | return; |
| 225 | } |
| 226 | // Checking nonce. |
| 227 | tutor_utils()->checking_nonce(); |
| 228 | |
| 229 | if ( ! is_user_logged_in() ) { |
| 230 | // TODO: need to set a view in the next version. |
| 231 | die( 'Please sign in to do this operation' ); |
| 232 | } |
| 233 | |
| 234 | global $wpdb; |
| 235 | |
| 236 | $user_id = get_current_user_id(); |
| 237 | $user = get_userdata( $user_id ); |
| 238 | |
| 239 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 240 | |
| 241 | $quiz = get_post( $quiz_id ); |
| 242 | $course = CourseModel::get_course_by_quiz( $quiz_id ); |
| 243 | if ( empty( $course->ID ) ) { |
| 244 | die( 'There is something went wrong with course, please check if quiz attached with a course' ); |
| 245 | } |
| 246 | |
| 247 | do_action( 'tutor_quiz/start/before', $quiz_id, $user_id ); |
| 248 | |
| 249 | $date = date( 'Y-m-d H:i:s', tutor_time() ); |
| 250 | |
| 251 | $tutor_quiz_option = (array) maybe_unserialize( get_post_meta( $quiz_id, 'tutor_quiz_option', true ) ); |
| 252 | $attempts_allowed = tutor_utils()->get_quiz_option( $quiz_id, 'attempts_allowed', 0 ); |
| 253 | |
| 254 | $time_limit = tutor_utils()->get_quiz_option( $quiz_id, 'time_limit.time_value' ); |
| 255 | $time_limit_seconds = 0; |
| 256 | $time_type = 'seconds'; |
| 257 | if ( $time_limit ) { |
| 258 | $time_type = tutor_utils()->get_quiz_option( $quiz_id, 'time_limit.time_type' ); |
| 259 | |
| 260 | switch ( $time_type ) { |
| 261 | case 'seconds': |
| 262 | $time_limit_seconds = $time_limit; |
| 263 | break; |
| 264 | case 'minutes': |
| 265 | $time_limit_seconds = $time_limit * 60; |
| 266 | break; |
| 267 | case 'hours': |
| 268 | $time_limit_seconds = $time_limit * 60 * 60; |
| 269 | break; |
| 270 | case 'days': |
| 271 | $time_limit_seconds = $time_limit * 60 * 60 * 24; |
| 272 | break; |
| 273 | case 'weeks': |
| 274 | $time_limit_seconds = $time_limit * 60 * 60 * 24 * 7; |
| 275 | break; |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | $max_question_allowed = tutor_utils()->max_questions_for_take_quiz( $quiz_id ); |
| 280 | $tutor_quiz_option['time_limit']['time_limit_seconds'] = $time_limit_seconds; |
| 281 | |
| 282 | $attempt_data = array( |
| 283 | 'course_id' => $course->ID, |
| 284 | 'quiz_id' => $quiz_id, |
| 285 | 'user_id' => $user_id, |
| 286 | 'total_questions' => $max_question_allowed, |
| 287 | 'total_answered_questions' => 0, |
| 288 | 'attempt_info' => maybe_serialize( $tutor_quiz_option ), |
| 289 | 'attempt_status' => 'attempt_started', |
| 290 | 'attempt_ip' => tutor_utils()->get_ip(), |
| 291 | 'attempt_started_at' => $date, |
| 292 | ); |
| 293 | |
| 294 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_data ); |
| 295 | $attempt_id = (int) $wpdb->insert_id; |
| 296 | |
| 297 | do_action( 'tutor_quiz/start/after', $quiz_id, $user_id, $attempt_id ); |
| 298 | |
| 299 | wp_safe_redirect( get_permalink( $quiz_id ) ); |
| 300 | die(); |
| 301 | } |
| 302 | |
| 303 | /** |
| 304 | * Answering quiz |
| 305 | * |
| 306 | * @since 1.0.0 |
| 307 | * |
| 308 | * @return void |
| 309 | */ |
| 310 | public function answering_quiz() { |
| 311 | |
| 312 | if ( Input::post( 'tutor_action' ) !== 'tutor_answering_quiz_question' ) { |
| 313 | return; |
| 314 | } |
| 315 | // submit quiz attempts. |
| 316 | self::tutor_quiz_attemp_submit(); |
| 317 | |
| 318 | wp_safe_redirect( get_the_permalink() ); |
| 319 | die(); |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * Quiz abandon submission handler |
| 324 | * |
| 325 | * @since 1.9.6 |
| 326 | * |
| 327 | * @return JSON response |
| 328 | */ |
| 329 | public function tutor_quiz_abandon() { |
| 330 | if ( Input::post( 'tutor_action' ) !== 'tutor_answering_quiz_question' ) { |
| 331 | return; |
| 332 | } |
| 333 | // submit quiz attempts. |
| 334 | if ( self::tutor_quiz_attemp_submit() ) { |
| 335 | wp_send_json_success(); |
| 336 | } else { |
| 337 | wp_send_json_error(); |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | /** |
| 342 | * This is a unified method for handling normal quiz submit or abandon submit |
| 343 | * It will handle ajax or normal form submit and can be used with different hooks |
| 344 | * |
| 345 | * @since 1.9.6 |
| 346 | * |
| 347 | * @return true | false |
| 348 | */ |
| 349 | public static function tutor_quiz_attemp_submit() { |
| 350 | // Check logged in. |
| 351 | if ( ! is_user_logged_in() ) { |
| 352 | die( 'Please sign in to do this operation' ); |
| 353 | } |
| 354 | |
| 355 | // Check nonce. |
| 356 | tutor_utils()->checking_nonce(); |
| 357 | |
| 358 | // Prepare attempt info. |
| 359 | global $wpdb; |
| 360 | $user_id = get_current_user_id(); |
| 361 | $attempt_id = Input::post( 'attempt_id', 0, Input::TYPE_INT ); |
| 362 | $attempt = tutor_utils()->get_attempt( $attempt_id ); |
| 363 | $course_id = CourseModel::get_course_by_quiz( $attempt->quiz_id )->ID; |
| 364 | |
| 365 | // Sanitize data by helper method. |
| 366 | $attempt_answers = isset( $_POST['attempt'] ) ? tutor_sanitize_data( $_POST['attempt'] ) : false; //phpcs:ignore |
| 367 | $attempt_answers = is_array( $attempt_answers ) ? $attempt_answers : array(); |
| 368 | |
| 369 | // Check if has access to the attempt. |
| 370 | if ( ! $attempt || $user_id != $attempt->user_id ) { |
| 371 | die( 'Operation not allowed, attempt not found or permission denied' ); |
| 372 | } |
| 373 | |
| 374 | // Before ook. |
| 375 | do_action( 'tutor_quiz/attempt_analysing/before', $attempt_id ); |
| 376 | |
| 377 | // Loop through every single attempt answer |
| 378 | // Single quiz can have multiple question. So multiple answer should be saved. |
| 379 | foreach ( $attempt_answers as $attempt_id => $attempt_answer ) { |
| 380 | |
| 381 | /** |
| 382 | * Get total marks of all question comes |
| 383 | */ |
| 384 | $question_ids = tutor_utils()->avalue_dot( 'quiz_question_ids', $attempt_answer ); |
| 385 | $question_ids = array_filter( |
| 386 | $question_ids, |
| 387 | function( $id ) { |
| 388 | return (int) $id; |
| 389 | } |
| 390 | ); |
| 391 | |
| 392 | // Calculate and set the total marks in attempt table for this question. |
| 393 | if ( is_array( $question_ids ) && count( $question_ids ) ) { |
| 394 | $question_ids_string = QueryHelper::prepare_in_clause( $question_ids ); |
| 395 | |
| 396 | // Get total marks of the questions from question table. |
| 397 | $total_question_marks = $wpdb->get_var( |
| 398 | "SELECT SUM(question_mark) |
| 399 | FROM {$wpdb->prefix}tutor_quiz_questions |
| 400 | WHERE question_id IN({$question_ids_string}); |
| 401 | " |
| 402 | ); |
| 403 | |
| 404 | // Set the the total mark in the attempt table for the question. |
| 405 | $wpdb->update( |
| 406 | $wpdb->prefix . 'tutor_quiz_attempts', |
| 407 | array( 'total_marks' => $total_question_marks ), |
| 408 | array( 'attempt_id' => $attempt_id ) |
| 409 | ); |
| 410 | } |
| 411 | |
| 412 | $total_marks = 0; |
| 413 | $review_required = false; |
| 414 | $quiz_answers = tutor_utils()->avalue_dot( 'quiz_question', $attempt_answer ); |
| 415 | |
| 416 | if ( tutor_utils()->count( $quiz_answers ) ) { |
| 417 | |
| 418 | foreach ( $quiz_answers as $question_id => $answers ) { |
| 419 | $question = QuizModel::get_quiz_question_by_id( $question_id ); |
| 420 | $question_type = $question->question_type; |
| 421 | |
| 422 | $is_answer_was_correct = false; |
| 423 | $given_answer = ''; |
| 424 | |
| 425 | if ( 'true_false' === $question_type || 'single_choice' === $question_type ) { |
| 426 | |
| 427 | if ( ! is_numeric( $answers ) || ! $answers ) { |
| 428 | wp_send_json_error(); |
| 429 | exit; |
| 430 | } |
| 431 | |
| 432 | $given_answer = $answers; |
| 433 | $is_answer_was_correct = (bool) $wpdb->get_var( |
| 434 | $wpdb->prepare( |
| 435 | "SELECT is_correct |
| 436 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 437 | WHERE answer_id = %d |
| 438 | ", |
| 439 | $answers |
| 440 | ) |
| 441 | ); |
| 442 | |
| 443 | } elseif ( 'multiple_choice' === $question_type ) { |
| 444 | |
| 445 | $given_answer = (array) ( $answers ); |
| 446 | |
| 447 | $given_answer = array_filter( |
| 448 | $given_answer, |
| 449 | function( $id ) { |
| 450 | return is_numeric( $id ) && $id > 0; |
| 451 | } |
| 452 | ); |
| 453 | $get_original_answers = (array) $wpdb->get_col( |
| 454 | $wpdb->prepare( |
| 455 | "SELECT |
| 456 | answer_id |
| 457 | FROM |
| 458 | {$wpdb->prefix}tutor_quiz_question_answers |
| 459 | WHERE belongs_question_id = %d |
| 460 | AND belongs_question_type = %s |
| 461 | AND is_correct = 1 ; |
| 462 | ", |
| 463 | $question->question_id, |
| 464 | $question_type |
| 465 | ) |
| 466 | ); |
| 467 | |
| 468 | if ( count( array_diff( $get_original_answers, $given_answer ) ) === 0 && count( $get_original_answers ) === count( $given_answer ) ) { |
| 469 | $is_answer_was_correct = true; |
| 470 | } |
| 471 | $given_answer = maybe_serialize( $answers ); |
| 472 | |
| 473 | } elseif ( 'fill_in_the_blank' === $question_type ) { |
| 474 | |
| 475 | $get_original_answer = $wpdb->get_row( |
| 476 | $wpdb->prepare( |
| 477 | "SELECT * |
| 478 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 479 | WHERE belongs_question_id = %d |
| 480 | AND belongs_question_type = %s ; |
| 481 | ", |
| 482 | $question->question_id, |
| 483 | $question_type |
| 484 | ) |
| 485 | ); |
| 486 | |
| 487 | /** |
| 488 | * Answers stored in DB |
| 489 | */ |
| 490 | $gap_answer = (array) explode( '|', $get_original_answer->answer_two_gap_match ); |
| 491 | $gap_answer = maybe_serialize( array_map( function ( $ans) { |
| 492 | return wp_slash( trim( $ans ) ); |
| 493 | }, $gap_answer ) ); |
| 494 | |
| 495 | /** |
| 496 | * Answers from user input |
| 497 | */ |
| 498 | $given_answer = (array) array_map( 'sanitize_text_field', $answers ); |
| 499 | $given_answer = maybe_serialize( $given_answer ); |
| 500 | |
| 501 | /** |
| 502 | * Compare answer's by making both case-insensitive. |
| 503 | */ |
| 504 | if ( strtolower( $given_answer ) == strtolower( $gap_answer ) ) { |
| 505 | $is_answer_was_correct = true; |
| 506 | } |
| 507 | } elseif ( 'open_ended' === $question_type || 'short_answer' === $question_type ) { |
| 508 | $review_required = true; |
| 509 | $given_answer = wp_kses_post( $answers ); |
| 510 | |
| 511 | } elseif ( 'ordering' === $question_type || 'matching' === $question_type || 'image_matching' === $question_type ) { |
| 512 | |
| 513 | $given_answer = (array) array_map( 'sanitize_text_field', tutor_utils()->avalue_dot( 'answers', $answers ) ); |
| 514 | $given_answer = maybe_serialize( $given_answer ); |
| 515 | |
| 516 | $get_original_answers = (array) $wpdb->get_col( |
| 517 | $wpdb->prepare( |
| 518 | "SELECT answer_id |
| 519 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 520 | WHERE belongs_question_id = %d |
| 521 | AND belongs_question_type = %s |
| 522 | ORDER BY answer_order ASC ; |
| 523 | ", |
| 524 | $question->question_id, |
| 525 | $question_type |
| 526 | ) |
| 527 | ); |
| 528 | |
| 529 | $get_original_answers = array_map( 'sanitize_text_field', $get_original_answers ); |
| 530 | |
| 531 | if ( maybe_serialize( $get_original_answers ) == $given_answer ) { |
| 532 | $is_answer_was_correct = true; |
| 533 | } |
| 534 | } elseif ( 'image_answering' === $question_type ) { |
| 535 | $image_inputs = tutor_utils()->avalue_dot( 'answer_id', $answers ); |
| 536 | $image_inputs = (array) array_map( 'sanitize_text_field', $image_inputs ); |
| 537 | $given_answer = maybe_serialize( $image_inputs ); |
| 538 | $is_answer_was_correct = false; |
| 539 | /** |
| 540 | * For the image_answering question type result |
| 541 | * remain pending in spite of correct answer & required |
| 542 | * review of admin/instructor. Since it's |
| 543 | * pending we need to mark it as incorrect. Otherwise if |
| 544 | * mark it correct then earned mark will be updated. then |
| 545 | * again when instructor/admin review & mark it as correct |
| 546 | * extra mark is adding. In this case, student |
| 547 | * getting double mark for the same question. |
| 548 | * |
| 549 | * For now code is commenting will be removed later on |
| 550 | * |
| 551 | * @since 2.1.5 |
| 552 | */ |
| 553 | |
| 554 | // $db_answer = $wpdb->get_col( |
| 555 | // $wpdb->prepare( |
| 556 | // "SELECT answer_title |
| 557 | // FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 558 | // WHERE belongs_question_id = %d |
| 559 | // AND belongs_question_type = 'image_answering' |
| 560 | // ORDER BY answer_order asc ;", |
| 561 | // $question_id |
| 562 | // ) |
| 563 | // ); |
| 564 | |
| 565 | // if ( is_array( $db_answer ) && count( $db_answer ) ) { |
| 566 | // $is_answer_was_correct = ( strtolower( maybe_serialize( array_values( $image_inputs ) ) ) == strtolower( maybe_serialize( $db_answer ) ) ); |
| 567 | // } |
| 568 | } |
| 569 | |
| 570 | $question_mark = $is_answer_was_correct ? $question->question_mark : 0; |
| 571 | $total_marks += $question_mark; |
| 572 | |
| 573 | $answers_data = array( |
| 574 | 'user_id' => $user_id, |
| 575 | 'quiz_id' => $attempt->quiz_id, |
| 576 | 'question_id' => $question_id, |
| 577 | 'quiz_attempt_id' => $attempt_id, |
| 578 | 'given_answer' => $given_answer, |
| 579 | 'question_mark' => $question->question_mark, |
| 580 | 'achieved_mark' => $question_mark, |
| 581 | 'minus_mark' => 0, |
| 582 | 'is_correct' => $is_answer_was_correct ? 1 : 0, |
| 583 | ); |
| 584 | |
| 585 | /** |
| 586 | * Check if question_type open ended or short ans the set |
| 587 | * is_correct default value null before saving |
| 588 | */ |
| 589 | if ( in_array( $question_type, array( 'open_ended', 'short_answer', 'image_answering' ) ) ) { |
| 590 | $answers_data['is_correct'] = null; |
| 591 | $review_required = true; |
| 592 | } |
| 593 | |
| 594 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answers_data ); |
| 595 | } |
| 596 | } |
| 597 | |
| 598 | $attempt_info = array( |
| 599 | 'total_answered_questions' => tutor_utils()->count( $quiz_answers ), |
| 600 | 'earned_marks' => $total_marks, |
| 601 | 'attempt_status' => 'attempt_ended', |
| 602 | 'attempt_ended_at' => date( 'Y-m-d H:i:s', tutor_time() ), |
| 603 | ); |
| 604 | |
| 605 | if ( $review_required ) { |
| 606 | $attempt_info['attempt_status'] = 'review_required'; |
| 607 | } |
| 608 | |
| 609 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_info, array( 'attempt_id' => $attempt_id ) ); |
| 610 | } |
| 611 | |
| 612 | // After hook. |
| 613 | do_action( 'tutor_quiz/attempt_ended', $attempt_id, $course_id, $user_id ); |
| 614 | |
| 615 | return true; |
| 616 | } |
| 617 | |
| 618 | |
| 619 | /** |
| 620 | * Quiz attempt will be finish here |
| 621 | * |
| 622 | * @since 1.0.0 |
| 623 | * |
| 624 | * @return void |
| 625 | */ |
| 626 | public function finishing_quiz_attempt() { |
| 627 | |
| 628 | if ( Input::post( 'tutor_action' ) !== 'tutor_finish_quiz_attempt' ) { |
| 629 | return; |
| 630 | } |
| 631 | // Checking nonce. |
| 632 | tutor_utils()->checking_nonce(); |
| 633 | |
| 634 | if ( ! is_user_logged_in() ) { |
| 635 | die( 'Please sign in to do this operation' ); |
| 636 | } |
| 637 | |
| 638 | global $wpdb; |
| 639 | |
| 640 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 641 | $attempt = tutor_utils()->is_started_quiz( $quiz_id ); |
| 642 | $attempt_id = $attempt->attempt_id; |
| 643 | |
| 644 | $attempt_info = array( |
| 645 | 'total_answered_questions' => 0, |
| 646 | 'earned_marks' => 0, |
| 647 | 'attempt_status' => 'attempt_ended', |
| 648 | 'attempt_ended_at' => date( 'Y-m-d H:i:s', tutor_time() ), |
| 649 | ); |
| 650 | |
| 651 | do_action( 'tutor_quiz_before_finish', $attempt_id, $quiz_id, $attempt->user_id ); |
| 652 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_info, array( 'attempt_id' => $attempt_id ) ); |
| 653 | do_action( 'tutor_quiz_finished', $attempt_id, $quiz_id, $attempt->user_id ); |
| 654 | |
| 655 | wp_redirect( tutor_utils()->input_old( '_wp_http_referer' ) ); |
| 656 | } |
| 657 | |
| 658 | /** |
| 659 | * Quiz timeout by ajax |
| 660 | * |
| 661 | * @since 1.0.0 |
| 662 | * |
| 663 | * @return void |
| 664 | */ |
| 665 | public function tutor_quiz_timeout() { |
| 666 | tutils()->checking_nonce(); |
| 667 | |
| 668 | global $wpdb; |
| 669 | |
| 670 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 671 | $attempt = tutor_utils()->is_started_quiz( $quiz_id ); |
| 672 | |
| 673 | if ( $attempt ) { |
| 674 | $attempt_id = $attempt->attempt_id; |
| 675 | |
| 676 | $data = array( |
| 677 | 'attempt_status' => 'attempt_timeout', |
| 678 | 'attempt_ended_at' => date( 'Y-m-d H:i:s', tutor_time() ), |
| 679 | ); |
| 680 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $data, array( 'attempt_id' => $attempt->attempt_id ) ); |
| 681 | |
| 682 | do_action( 'tutor_quiz_timeout', $attempt_id, $quiz_id, $attempt->user_id ); |
| 683 | |
| 684 | wp_send_json_success(); |
| 685 | } |
| 686 | |
| 687 | wp_send_json_error( __( 'Quiz has been timeout already', 'tutor' ) ); |
| 688 | } |
| 689 | |
| 690 | /** |
| 691 | * Review quiz answer |
| 692 | * |
| 693 | * @since 1.0.0 |
| 694 | * |
| 695 | * @return void |
| 696 | */ |
| 697 | public function review_quiz_answer() { |
| 698 | |
| 699 | tutor_utils()->checking_nonce(); |
| 700 | |
| 701 | global $wpdb; |
| 702 | |
| 703 | $attempt_id = Input::post( 'attempt_id', 0, Input::TYPE_INT ); |
| 704 | $context = Input::post( 'context' ); |
| 705 | $attempt_answer_id = Input::post( 'attempt_answer_id', 0, Input::TYPE_INT ); |
| 706 | $mark_as = Input::post( 'mark_as' ); |
| 707 | |
| 708 | if ( ! tutor_utils()->can_user_manage( 'attempt', $attempt_id ) || ! tutor_utils()->can_user_manage( 'attempt_answer', $attempt_answer_id ) ) { |
| 709 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 710 | } |
| 711 | |
| 712 | $attempt_answer = $wpdb->get_row( |
| 713 | $wpdb->prepare( |
| 714 | "SELECT * |
| 715 | FROM {$wpdb->prefix}tutor_quiz_attempt_answers |
| 716 | WHERE attempt_answer_id = %d |
| 717 | ", |
| 718 | $attempt_answer_id |
| 719 | ) |
| 720 | ); |
| 721 | |
| 722 | $attempt = tutor_utils()->get_attempt( $attempt_id ); |
| 723 | $question = QuizModel::get_quiz_question_by_id( $attempt_answer->question_id ); |
| 724 | $course_id = $attempt->course_id; |
| 725 | $student_id = $attempt->user_id; |
| 726 | $previous_ans = $attempt_answer->is_correct; |
| 727 | |
| 728 | do_action( 'tutor_quiz_review_answer_before', $attempt_answer_id, $attempt_id, $mark_as ); |
| 729 | |
| 730 | if ( 'correct' === $mark_as ) { |
| 731 | |
| 732 | $answer_update_data = array( |
| 733 | 'achieved_mark' => $attempt_answer->question_mark, |
| 734 | 'is_correct' => 1, |
| 735 | ); |
| 736 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answer_update_data, array( 'attempt_answer_id' => $attempt_answer_id ) ); |
| 737 | if ( 0 == $previous_ans || null == $previous_ans ) { |
| 738 | // if previous answer was wrong or in review then add point as correct. |
| 739 | $attempt_update_data = array( |
| 740 | 'earned_marks' => $attempt->earned_marks + $attempt_answer->question_mark, |
| 741 | 'is_manually_reviewed' => 1, |
| 742 | 'manually_reviewed_at' => date( 'Y-m-d H:i:s', tutor_time() ), |
| 743 | ); |
| 744 | } |
| 745 | |
| 746 | if ( 'open_ended' === $question->question_type || 'short_answer' === $question->question_type ) { |
| 747 | $attempt_update_data['attempt_status'] = 'attempt_ended'; |
| 748 | } |
| 749 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_update_data, array( 'attempt_id' => $attempt_id ) ); |
| 750 | |
| 751 | } elseif ( 'incorrect' === $mark_as ) { |
| 752 | |
| 753 | $answer_update_data = array( |
| 754 | 'achieved_mark' => '0.00', |
| 755 | 'is_correct' => 0, |
| 756 | ); |
| 757 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempt_answers', $answer_update_data, array( 'attempt_answer_id' => $attempt_answer_id ) ); |
| 758 | |
| 759 | if ( 1 == $previous_ans ) { |
| 760 | // If previous ans was right then mynus. |
| 761 | $attempt_update_data = array( |
| 762 | 'earned_marks' => $attempt->earned_marks - $attempt_answer->question_mark, |
| 763 | 'is_manually_reviewed' => 1, |
| 764 | 'manually_reviewed_at' => date( 'Y-m-d H:i:s', tutor_time() ), |
| 765 | ); |
| 766 | } |
| 767 | if ( 'open_ended' === $question->question_type || 'short_answer' === $question->question_type ) { |
| 768 | $attempt_update_data['attempt_status'] = 'attempt_ended'; |
| 769 | } |
| 770 | |
| 771 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_attempts', $attempt_update_data, array( 'attempt_id' => $attempt_id ) ); |
| 772 | } |
| 773 | do_action( 'tutor_quiz_review_answer_after', $attempt_answer_id, $attempt_id, $mark_as ); |
| 774 | do_action( 'tutor_quiz/answer/review/after', $attempt_answer_id, $course_id, $student_id ); |
| 775 | |
| 776 | ob_start(); |
| 777 | tutor_load_template_from_custom_path( |
| 778 | tutor()->path . '/views/quiz/attempt-details.php', |
| 779 | array( |
| 780 | 'attempt_id' => $attempt_id, |
| 781 | 'user_id' => $student_id, |
| 782 | 'context' => $context, |
| 783 | 'back_url' => Input::post( 'back_url' ), |
| 784 | ) |
| 785 | ); |
| 786 | wp_send_json_success( array( 'html' => ob_get_clean() ) ); |
| 787 | } |
| 788 | |
| 789 | /** |
| 790 | * Save single quiz into database and send html response |
| 791 | * |
| 792 | * @since 1.0.0 |
| 793 | * |
| 794 | * @return void |
| 795 | */ |
| 796 | public function tutor_quiz_save() { |
| 797 | tutor_utils()->checking_nonce(); |
| 798 | // Prepare args. |
| 799 | $topic_id = Input::post( 'topic_id', 0, Input::TYPE_INT ); |
| 800 | $ex_quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 801 | $quiz_title = Input::post( 'quiz_title' ); |
| 802 | $quiz_description = isset( $_POST['quiz_description'] ) ? wp_kses( wp_unslash( $_POST['quiz_description'] ), $this->allowed_html ) : ''; //phpcs:ignore |
| 803 | |
| 804 | $next_order_id = tutor_utils()->get_next_course_content_order_id( $topic_id, $ex_quiz_id ); |
| 805 | |
| 806 | // Check edit privilege. |
| 807 | if ( ! tutor_utils()->can_user_manage( 'topic', $topic_id ) ) { |
| 808 | wp_send_json_error( |
| 809 | array( |
| 810 | 'message' => __( 'Access Denied', 'tutor' ), |
| 811 | 'data' => array(), |
| 812 | ) |
| 813 | ); |
| 814 | } |
| 815 | |
| 816 | // Prepare quiz data to save in database. |
| 817 | $post_arr = array( |
| 818 | 'ID' => $ex_quiz_id, |
| 819 | 'post_type' => 'tutor_quiz', |
| 820 | 'post_title' => $quiz_title, |
| 821 | 'post_content' => $quiz_description, |
| 822 | 'post_status' => 'publish', |
| 823 | 'post_author' => get_current_user_id(), |
| 824 | 'post_parent' => $topic_id, |
| 825 | 'menu_order' => $next_order_id, |
| 826 | ); |
| 827 | |
| 828 | // Insert quiz and run hook. |
| 829 | $quiz_id = wp_insert_post( $post_arr ); |
| 830 | do_action( ( $ex_quiz_id ? 'tutor_quiz_updated' : 'tutor_initial_quiz_created' ), $quiz_id ); |
| 831 | |
| 832 | // Sanitize by helper method & save quiz settings. |
| 833 | $quiz_option = tutor_utils()->sanitize_array( $_POST['quiz_option'] ); //phpcs:ignore |
| 834 | update_post_meta( $quiz_id, 'tutor_quiz_option', $quiz_option ); |
| 835 | do_action( 'tutor_quiz_settings_updated', $quiz_id ); |
| 836 | |
| 837 | // Generate quiz modal to show in modal. |
| 838 | $output = $this->tutor_load_quiz_builder_modal( |
| 839 | array( |
| 840 | 'topic_id' => $topic_id, |
| 841 | 'quiz_id' => $quiz_id, |
| 842 | ), |
| 843 | true |
| 844 | ); |
| 845 | |
| 846 | // Generate quiz list to show under topic as sub list. |
| 847 | ob_start(); |
| 848 | tutor_load_template_from_custom_path( |
| 849 | tutor()->path . '/views/fragments/quiz-list-single.php', |
| 850 | array( |
| 851 | 'quiz_id' => $quiz_id, |
| 852 | 'topic_id' => $topic_id, |
| 853 | 'quiz_title' => $quiz_title, |
| 854 | ), |
| 855 | false |
| 856 | ); |
| 857 | $output_quiz_row = ob_get_clean(); |
| 858 | |
| 859 | wp_send_json_success( |
| 860 | array( |
| 861 | 'output' => $output, |
| 862 | 'output_quiz_row' => $output_quiz_row, |
| 863 | ) |
| 864 | ); |
| 865 | } |
| 866 | |
| 867 | /** |
| 868 | * Delete quiz by id |
| 869 | * |
| 870 | * @since 1.0.0 |
| 871 | * |
| 872 | * @return void |
| 873 | */ |
| 874 | public function tutor_delete_quiz_by_id() { |
| 875 | tutor_utils()->checking_nonce(); |
| 876 | |
| 877 | global $wpdb; |
| 878 | |
| 879 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 880 | $post = get_post( $quiz_id ); |
| 881 | |
| 882 | if ( ! tutils()->can_user_manage( 'quiz', $quiz_id ) ) { |
| 883 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 884 | } |
| 885 | |
| 886 | if ( 'tutor_quiz' === $post->post_type ) { |
| 887 | do_action( 'tutor_delete_quiz_before', $quiz_id ); |
| 888 | |
| 889 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_attempts', array( 'quiz_id' => $quiz_id ) ); |
| 890 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_attempt_answers', array( 'quiz_id' => $quiz_id ) ); |
| 891 | |
| 892 | $questions_ids = $wpdb->get_col( $wpdb->prepare( "SELECT question_id FROM {$wpdb->prefix}tutor_quiz_questions WHERE quiz_id = %d ", $quiz_id ) ); |
| 893 | |
| 894 | if ( is_array( $questions_ids ) && count( $questions_ids ) ) { |
| 895 | $in_question_ids = QueryHelper::prepare_in_clause( $questions_ids ); |
| 896 | $wpdb->query( |
| 897 | "DELETE |
| 898 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 899 | WHERE belongs_question_id IN({$in_question_ids}) |
| 900 | " |
| 901 | ); |
| 902 | } |
| 903 | |
| 904 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_questions', array( 'quiz_id' => $quiz_id ) ); |
| 905 | |
| 906 | wp_delete_post( $quiz_id, true ); |
| 907 | |
| 908 | do_action( 'tutor_delete_quiz_after', $quiz_id ); |
| 909 | |
| 910 | wp_send_json_success(); |
| 911 | } |
| 912 | |
| 913 | wp_send_json_error(); |
| 914 | } |
| 915 | |
| 916 | /** |
| 917 | * Load quiz Modal on add/edit click |
| 918 | * |
| 919 | * @since 1.0.0 |
| 920 | * |
| 921 | * @param array $params params. |
| 922 | * @param boolean $return should return or not. |
| 923 | * |
| 924 | * @return mixed |
| 925 | */ |
| 926 | public function tutor_load_quiz_builder_modal( $params = array(), $return = false ) { |
| 927 | tutor_utils()->checking_nonce(); |
| 928 | |
| 929 | //phpcs:ignore WordPress.Security.NonceVerification.Missing |
| 930 | $data = array_merge( $_POST, $params ); |
| 931 | $quiz_id = isset( $data['quiz_id'] ) ? sanitize_text_field( $data['quiz_id'] ) : 0; |
| 932 | $topic_id = isset( $data['topic_id'] ) ? sanitize_text_field( $data['topic_id'] ) : 0; |
| 933 | $quiz = $quiz_id ? get_post( $quiz_id ) : null; |
| 934 | $course_id = Input::post( 'course_id', 0, Input::TYPE_INT ); |
| 935 | |
| 936 | if ( $quiz_id && ! tutor_utils()->can_user_manage( 'quiz', $quiz_id ) ) { |
| 937 | wp_send_json_error( array( 'message' => __( 'Quiz Permission Denied', 'tutor' ) ) ); |
| 938 | } |
| 939 | |
| 940 | ob_start(); |
| 941 | include tutor()->path . 'views/modal/edit_quiz.php'; |
| 942 | $output = ob_get_clean(); |
| 943 | |
| 944 | if ( $return ) { |
| 945 | return $output; |
| 946 | } |
| 947 | |
| 948 | wp_send_json_success( array( 'output' => $output ) ); |
| 949 | } |
| 950 | |
| 951 | /** |
| 952 | * Load quiz question form for quiz |
| 953 | * |
| 954 | * @since 1.0.0 |
| 955 | * |
| 956 | * @return void |
| 957 | */ |
| 958 | public function tutor_quiz_builder_get_question_form() { |
| 959 | tutor_utils()->checking_nonce(); |
| 960 | |
| 961 | global $wpdb; |
| 962 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 963 | $topic_id = Input::post( 'topic_id', 0, Input::TYPE_INT ); |
| 964 | $question_id = Input::post( 'question_id', 0, Input::TYPE_INT ); |
| 965 | |
| 966 | // check if the user can manage the quiz. |
| 967 | if ( ! tutor_utils()->can_user_manage( 'quiz', $quiz_id ) ) { |
| 968 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 969 | } |
| 970 | |
| 971 | // If question ID not provided, then create new before rendering the form. |
| 972 | if ( ! $question_id ) { |
| 973 | $next_question_id = QuizModel::quiz_next_question_id(); |
| 974 | $next_question_order = QuizModel::quiz_next_question_order_id( $quiz_id ); |
| 975 | $question_title = __( 'Question', 'tutor' ) . ' ' . $next_question_id; |
| 976 | |
| 977 | $new_question_data = array( |
| 978 | 'quiz_id' => $quiz_id, |
| 979 | 'question_title' => $question_title, |
| 980 | 'question_description' => '', |
| 981 | 'question_type' => 'true_false', |
| 982 | 'question_mark' => 1, |
| 983 | 'question_settings' => maybe_serialize( array() ), |
| 984 | 'question_order' => esc_sql( $next_question_order ), |
| 985 | ); |
| 986 | |
| 987 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_questions', $new_question_data ); |
| 988 | $question_id = $wpdb->insert_id; |
| 989 | |
| 990 | // Add default true/false options for this question since it is by default true/false type. |
| 991 | $question_array = array( |
| 992 | $question_id => array( |
| 993 | 'Question' => $question_title, |
| 994 | 'question_type' => 'true_false', |
| 995 | 'question_mark' => '1.00', |
| 996 | 'question_description' => '', |
| 997 | ), |
| 998 | ); |
| 999 | |
| 1000 | $answer_array = array( |
| 1001 | $question_id => array( |
| 1002 | 'true_false' => true, |
| 1003 | ), |
| 1004 | ); |
| 1005 | |
| 1006 | $this->tutor_save_quiz_answer_options( $question_array, $answer_array, false ); |
| 1007 | } |
| 1008 | |
| 1009 | // Now get all data by this question id. |
| 1010 | $question = $wpdb->get_row( |
| 1011 | $wpdb->prepare( |
| 1012 | "SELECT * FROM {$wpdb->prefix}tutor_quiz_questions |
| 1013 | WHERE question_id = %d ", |
| 1014 | $question_id |
| 1015 | ) |
| 1016 | ); |
| 1017 | |
| 1018 | // Render the question form finally. |
| 1019 | ob_start(); |
| 1020 | require tutor()->path . 'views/modal/question_form.php'; |
| 1021 | $output = ob_get_clean(); |
| 1022 | |
| 1023 | wp_send_json_success( array( 'output' => $output ) ); |
| 1024 | } |
| 1025 | |
| 1026 | /** |
| 1027 | * Update quiz modal |
| 1028 | * |
| 1029 | * @since 1.0.0 |
| 1030 | * |
| 1031 | * @return void |
| 1032 | */ |
| 1033 | public function tutor_quiz_modal_update_question() { |
| 1034 | tutor_utils()->checking_nonce(); |
| 1035 | |
| 1036 | global $wpdb; |
| 1037 | // Sanitize $_POST below before using. |
| 1038 | $quiz_question_id = Input::post( 'tutor_quiz_question_id', 0, Input::TYPE_INT ); |
| 1039 | if ( ! $quiz_question_id ) { |
| 1040 | wp_send_json_error( __( 'Invalid quiz question ID', 'tutor' ) ); |
| 1041 | } |
| 1042 | |
| 1043 | /** |
| 1044 | * Sanitize $_POST[tutor_quiz_question] data through array_walk |
| 1045 | * it will override & sanitize all the question data. |
| 1046 | * |
| 1047 | * @since 2.1.3 |
| 1048 | */ |
| 1049 | if ( isset( $_POST['tutor_quiz_question'][ $quiz_question_id ] ) ) { |
| 1050 | array_walk( |
| 1051 | $_POST['tutor_quiz_question'][ $quiz_question_id ], // phpcs:ignore |
| 1052 | function( $v, $k ) use ( $quiz_question_id ) { |
| 1053 | if ( 'question_description' === $k ) { |
| 1054 | $_POST['tutor_quiz_question'][ $quiz_question_id ][ $k ] = wp_kses_post( wp_unslash( $v ) ); |
| 1055 | } else { |
| 1056 | $_POST['tutor_quiz_question'][ $quiz_question_id ][ $k ] = sanitize_text_field( wp_unslash( $v ) ); |
| 1057 | } |
| 1058 | } |
| 1059 | ); |
| 1060 | } else { |
| 1061 | wp_send_json_error( __( 'Invalid quiz question ID', 'tutor' ) ); |
| 1062 | } |
| 1063 | |
| 1064 | $question_data = wp_unslash( $_POST['tutor_quiz_question'] ); //phpcs:ignore |
| 1065 | $requires_answeres = array( |
| 1066 | 'multiple_choice', |
| 1067 | 'single_choice', |
| 1068 | 'true_false', |
| 1069 | 'fill_in_the_blank', |
| 1070 | 'matching', |
| 1071 | 'image_matching', |
| 1072 | 'image_answering', |
| 1073 | 'ordering', |
| 1074 | ); |
| 1075 | |
| 1076 | $need_correct = array( |
| 1077 | 'multiple_choice', |
| 1078 | 'single_choice', |
| 1079 | 'true_false', |
| 1080 | ); |
| 1081 | |
| 1082 | foreach ( $question_data as $question_id => $question ) { |
| 1083 | // Make sure the quiz has answers. |
| 1084 | if ( isset( $question['question_type'] ) && in_array( $question['question_type'], $requires_answeres ) ) { |
| 1085 | $require_correct = in_array( $question['question_type'], $need_correct ); |
| 1086 | $all_answers = $this->get_answers_by_q_id( $question_id, $question['question_type'] ); |
| 1087 | $correct_answers = $this->get_answers_by_q_id( $question_id, $question['question_type'], $require_correct ); |
| 1088 | |
| 1089 | if ( ! empty( $all_answers ) && empty( $correct_answers ) ) { |
| 1090 | wp_send_json_error( array( 'message' => __( 'Please make sure the question has answer' ) ) ); |
| 1091 | exit; |
| 1092 | } |
| 1093 | } |
| 1094 | |
| 1095 | if ( ! tutor_utils()->can_user_manage( 'question', $question_id ) ) { |
| 1096 | continue; |
| 1097 | } |
| 1098 | // Data already sanitize above. |
| 1099 | $question_title = $question['question_title'] ?? ''; |
| 1100 | $question_description = $question['question_description']; |
| 1101 | $question_type = $question['question_type'] ?? ''; |
| 1102 | $question_mark = $question['question_mark'] ?? ''; |
| 1103 | |
| 1104 | unset( $question['question_title'] ); |
| 1105 | unset( $question['question_description'] ); |
| 1106 | |
| 1107 | $data = array( |
| 1108 | 'question_title' => $question_title, |
| 1109 | 'question_description' => $question_description, |
| 1110 | 'question_type' => $question_type, |
| 1111 | 'question_mark' => $question_mark, |
| 1112 | 'question_settings' => maybe_serialize( $question ), |
| 1113 | ); |
| 1114 | |
| 1115 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_questions', $data, array( 'question_id' => $question_id ) ); |
| 1116 | } |
| 1117 | |
| 1118 | wp_send_json_success(); |
| 1119 | } |
| 1120 | |
| 1121 | /** |
| 1122 | * Delete quiz questions |
| 1123 | * |
| 1124 | * @since 1.0.0 |
| 1125 | * |
| 1126 | * @return void |
| 1127 | */ |
| 1128 | public function tutor_quiz_builder_question_delete() { |
| 1129 | tutor_utils()->checking_nonce(); |
| 1130 | |
| 1131 | global $wpdb; |
| 1132 | |
| 1133 | $question_id = Input::post( 'question_id', 0, Input::TYPE_INT ); |
| 1134 | |
| 1135 | if ( ! tutor_utils()->can_user_manage( 'question', $question_id ) ) { |
| 1136 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 1137 | } |
| 1138 | |
| 1139 | if ( $question_id ) { |
| 1140 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_questions', array( 'question_id' => esc_sql( $question_id ) ) ); |
| 1141 | } |
| 1142 | |
| 1143 | wp_send_json_success(); |
| 1144 | } |
| 1145 | |
| 1146 | /** |
| 1147 | * Get answers options form for quiz question |
| 1148 | * |
| 1149 | * @since 1.0.0 |
| 1150 | * |
| 1151 | * @return void send wp_json response |
| 1152 | */ |
| 1153 | public function tutor_quiz_question_answer_editor() { |
| 1154 | tutor_utils()->checking_nonce(); |
| 1155 | |
| 1156 | $question_id = Input::post( 'question_id', 0, Input::TYPE_INT ); |
| 1157 | $answer_id = Input::post( 'answer_id', 0, Input::TYPE_INT ); |
| 1158 | $quiz_option = isset( $_POST['tutor_quiz_question'] ) ? tutor_utils()->sanitize_array( wp_unslash( $_POST['tutor_quiz_question'] ) ) : array(); //phpcs:ignore |
| 1159 | $question = tutor_utils()->avalue_dot( $question_id, $quiz_option ); |
| 1160 | $question_type = $question['question_type']; |
| 1161 | |
| 1162 | if ( ! tutor_utils()->can_user_manage( 'question', $question_id ) ) { |
| 1163 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 1164 | } |
| 1165 | |
| 1166 | if ( $answer_id ) { |
| 1167 | $old_answer = tutor_utils()->get_answer_by_id( $answer_id ); |
| 1168 | //phpcs:ignore Generic.CodeAnalysis.EmptyStatement.DetectedForeach |
| 1169 | foreach ( $old_answer as $old_answer ) { |
| 1170 | } |
| 1171 | } |
| 1172 | |
| 1173 | ob_start(); |
| 1174 | include tutor()->path . 'views/modal/question_answer_form.php'; |
| 1175 | $output = ob_get_clean(); |
| 1176 | |
| 1177 | wp_send_json_success( array( 'output' => $output ) ); |
| 1178 | } |
| 1179 | |
| 1180 | /** |
| 1181 | * Undocumented function |
| 1182 | * |
| 1183 | * @since 1.0.0 |
| 1184 | * |
| 1185 | * @param mixed $questions questions. |
| 1186 | * @param mixed $answers answers. |
| 1187 | * @param boolean $response should send json response. |
| 1188 | * |
| 1189 | * @return void |
| 1190 | */ |
| 1191 | public function tutor_save_quiz_answer_options( $questions = null, $answers = null, $response = true ) { |
| 1192 | tutor_utils()->checking_nonce(); |
| 1193 | |
| 1194 | global $wpdb; |
| 1195 | $questions = $questions ? $questions : tutor_utils()->sanitize_array( wp_unslash( $_POST['tutor_quiz_question'] ) ); //phpcs:ignore |
| 1196 | $answers = $answers ? $answers : tutor_utils()->sanitize_array( wp_unslash( $_POST['quiz_answer'] ) ); //phpcs:ignore |
| 1197 | |
| 1198 | foreach ( $answers as $question_id => $answer ) { |
| 1199 | if ( ! tutor_utils()->can_user_manage( 'question', $question_id ) ) { |
| 1200 | continue; |
| 1201 | } |
| 1202 | |
| 1203 | $question = tutor_utils()->avalue_dot( $question_id, $questions ); |
| 1204 | $question_type = $question['question_type']; |
| 1205 | |
| 1206 | // Getting next sorting order. |
| 1207 | $next_order_id = (int) $wpdb->get_var( |
| 1208 | $wpdb->prepare( |
| 1209 | "SELECT MAX(answer_order) |
| 1210 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 1211 | WHERE belongs_question_id = %d |
| 1212 | AND belongs_question_type = %s |
| 1213 | ", |
| 1214 | $question_id, |
| 1215 | esc_sql( $question_type ) |
| 1216 | ) |
| 1217 | ); |
| 1218 | |
| 1219 | //phpcs:ignore Squiz.Operators.IncrementDecrementUsage.Found |
| 1220 | $next_order_id = $next_order_id + 1; |
| 1221 | |
| 1222 | if ( $question ) { |
| 1223 | if ( 'true_false' === $question_type ) { |
| 1224 | $wpdb->delete( |
| 1225 | $wpdb->prefix . 'tutor_quiz_question_answers', |
| 1226 | array( |
| 1227 | 'belongs_question_id' => $question_id, |
| 1228 | 'belongs_question_type' => $question_type, |
| 1229 | ) |
| 1230 | ); |
| 1231 | $data_true_false = array( |
| 1232 | array( |
| 1233 | 'belongs_question_id' => esc_sql( $question_id ), |
| 1234 | 'belongs_question_type' => $question_type, |
| 1235 | 'answer_title' => __( 'True', 'tutor' ), |
| 1236 | 'is_correct' => 'true' == $answer['true_false'] ? 1 : 0, |
| 1237 | 'answer_two_gap_match' => 'true', |
| 1238 | ), |
| 1239 | array( |
| 1240 | 'belongs_question_id' => esc_sql( $question_id ), |
| 1241 | 'belongs_question_type' => $question_type, |
| 1242 | 'answer_title' => __( 'False', 'tutor' ), |
| 1243 | 'is_correct' => 'false' === $answer['true_false'] ? 1 : 0, |
| 1244 | 'answer_two_gap_match' => 'false', |
| 1245 | ), |
| 1246 | ); |
| 1247 | |
| 1248 | foreach ( $data_true_false as $true_false_data ) { |
| 1249 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_question_answers', $true_false_data ); |
| 1250 | } |
| 1251 | } elseif ( 'multiple_choice' === $question_type || |
| 1252 | 'single_choice' === $question_type || |
| 1253 | 'ordering' === $question_type || |
| 1254 | 'matching' === $question_type || |
| 1255 | 'image_matching' === $question_type || |
| 1256 | 'image_answering' === $question_type ) { |
| 1257 | |
| 1258 | $answer_data = array( |
| 1259 | 'belongs_question_id' => sanitize_text_field( $question_id ), |
| 1260 | 'belongs_question_type' => $question_type, |
| 1261 | 'answer_title' => sanitize_text_field( $answer['answer_title'] ), |
| 1262 | 'image_id' => isset( $answer['image_id'] ) ? $answer['image_id'] : 0, |
| 1263 | 'answer_view_format' => isset( $answer['answer_view_format'] ) ? $answer['answer_view_format'] : 0, |
| 1264 | 'answer_order' => $next_order_id, |
| 1265 | ); |
| 1266 | if ( isset( $answer['matched_answer_title'] ) ) { |
| 1267 | $answer_data['answer_two_gap_match'] = sanitize_text_field( $answer['matched_answer_title'] ); |
| 1268 | } |
| 1269 | |
| 1270 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_question_answers', $answer_data ); |
| 1271 | |
| 1272 | } elseif ( 'fill_in_the_blank' === $question_type ) { |
| 1273 | $wpdb->delete( |
| 1274 | $wpdb->prefix . 'tutor_quiz_question_answers', |
| 1275 | array( |
| 1276 | 'belongs_question_id' => $question_id, |
| 1277 | 'belongs_question_type' => $question_type, |
| 1278 | ) |
| 1279 | ); |
| 1280 | $answer_data = array( |
| 1281 | 'belongs_question_id' => sanitize_text_field( $question_id ), |
| 1282 | 'belongs_question_type' => $question_type, |
| 1283 | 'answer_title' => sanitize_text_field( $answer['answer_title'] ), |
| 1284 | 'answer_two_gap_match' => isset( $answer['answer_two_gap_match'] ) ? sanitize_text_field( trim( $answer['answer_two_gap_match'] ) ) : null, |
| 1285 | ); |
| 1286 | $wpdb->insert( $wpdb->prefix . 'tutor_quiz_question_answers', $answer_data ); |
| 1287 | } |
| 1288 | } |
| 1289 | } |
| 1290 | |
| 1291 | // Send response to browser if not internal call. |
| 1292 | if ( $response ) { |
| 1293 | wp_send_json_success(); |
| 1294 | exit; |
| 1295 | } |
| 1296 | } |
| 1297 | |
| 1298 | /** |
| 1299 | * Tutor Update Answer |
| 1300 | * |
| 1301 | * @since 1.0.0 |
| 1302 | * |
| 1303 | * @return void send wp_json response |
| 1304 | */ |
| 1305 | public function tutor_update_quiz_answer_options() { |
| 1306 | tutor_utils()->checking_nonce(); |
| 1307 | |
| 1308 | global $wpdb; |
| 1309 | |
| 1310 | $answer_id = Input::post( 'tutor_quiz_answer_id', 0, Input::TYPE_INT ); |
| 1311 | |
| 1312 | if ( ! tutor_utils()->can_user_manage( 'quiz_answer', $answer_id ) ) { |
| 1313 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 1314 | } |
| 1315 | |
| 1316 | // Data sanitizing by helper method. |
| 1317 | $questions = tutor_sanitize_data( wp_unslash( $_POST['tutor_quiz_question'] ) ); //phpcs:ignore |
| 1318 | $answers = tutor_sanitize_data( wp_unslash( $_POST['quiz_answer'] ) ); //phpcs:ignore |
| 1319 | |
| 1320 | foreach ( $answers as $question_id => $answer ) { |
| 1321 | $question = tutor_utils()->avalue_dot( $question_id, $questions ); |
| 1322 | $question_type = $question['question_type']; |
| 1323 | |
| 1324 | if ( $question ) { |
| 1325 | if ( 'multiple_choice' === $question_type || |
| 1326 | 'single_choice' === $question_type || |
| 1327 | 'ordering' === $question_type || |
| 1328 | 'matching' === $question_type || |
| 1329 | 'image_matching' === $question_type || |
| 1330 | 'fill_in_the_blank' === $question_type || |
| 1331 | 'image_answering' === $question_type ) { |
| 1332 | |
| 1333 | $answer_data = array( |
| 1334 | 'belongs_question_id' => $question_id, |
| 1335 | 'belongs_question_type' => $question_type, |
| 1336 | 'answer_title' => sanitize_text_field( $answer['answer_title'] ), |
| 1337 | 'image_id' => isset( $answer['image_id'] ) ? $answer['image_id'] : 0, |
| 1338 | 'answer_view_format' => isset( $answer['answer_view_format'] ) ? sanitize_text_field( $answer['answer_view_format'] ) : '', |
| 1339 | ); |
| 1340 | if ( isset( $answer['matched_answer_title'] ) ) { |
| 1341 | $answer_data['answer_two_gap_match'] = sanitize_text_field( $answer['matched_answer_title'] ); |
| 1342 | } |
| 1343 | |
| 1344 | if ( 'fill_in_the_blank' === $question_type ) { |
| 1345 | $answer_data['answer_two_gap_match'] = isset( $answer['answer_two_gap_match'] ) ? sanitize_text_field( trim( $answer['answer_two_gap_match'] ) ) : null; |
| 1346 | } |
| 1347 | |
| 1348 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_question_answers', $answer_data, array( 'answer_id' => $answer_id ) ); |
| 1349 | } |
| 1350 | } |
| 1351 | } |
| 1352 | wp_send_json_success(); |
| 1353 | } |
| 1354 | |
| 1355 | /** |
| 1356 | * Get answers by quiz id |
| 1357 | * |
| 1358 | * @since 1.0.0 |
| 1359 | * |
| 1360 | * @param int $question_id question id. |
| 1361 | * @param mixed $question_type type of question. |
| 1362 | * @param boolean $is_correct only correct answers or not. |
| 1363 | * |
| 1364 | * @return wpdb:get_results |
| 1365 | */ |
| 1366 | private function get_answers_by_q_id( $question_id, $question_type, $is_correct = false ) { |
| 1367 | global $wpdb; |
| 1368 | |
| 1369 | $correct_clause = $is_correct ? ' AND is_correct=1 ' : ''; |
| 1370 | |
| 1371 | return $wpdb->get_results( |
| 1372 | $wpdb->prepare( |
| 1373 | "SELECT * FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 1374 | WHERE belongs_question_id = %d |
| 1375 | AND belongs_question_type = %s |
| 1376 | {$correct_clause} |
| 1377 | ORDER BY answer_order ASC; |
| 1378 | ", |
| 1379 | $question_id, |
| 1380 | esc_sql( $question_type ) |
| 1381 | ) |
| 1382 | ); |
| 1383 | } |
| 1384 | |
| 1385 | /** |
| 1386 | * Quiz builder changed type |
| 1387 | * |
| 1388 | * @since 1.0.0 |
| 1389 | * |
| 1390 | * @return void send wp_json response |
| 1391 | */ |
| 1392 | public function tutor_quiz_builder_change_type() { |
| 1393 | tutor_utils()->checking_nonce(); |
| 1394 | |
| 1395 | global $wpdb; |
| 1396 | $question_id = Input::post( 'question_id', 0, Input::TYPE_INT ); |
| 1397 | $question_type = Input::post( 'question_type' ); |
| 1398 | |
| 1399 | if ( ! tutor_utils()->can_user_manage( 'question', $question_id ) ) { |
| 1400 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 1401 | } |
| 1402 | |
| 1403 | // Get question data by question ID. |
| 1404 | $question = $wpdb->get_row( |
| 1405 | $wpdb->prepare( |
| 1406 | "SELECT * |
| 1407 | FROM {$wpdb->prefix}tutor_quiz_questions |
| 1408 | WHERE question_id = %d |
| 1409 | ", |
| 1410 | $question_id |
| 1411 | ) |
| 1412 | ); |
| 1413 | |
| 1414 | // Get answers by question ID. |
| 1415 | $answers = $this->get_answers_by_q_id( $question_id, $question_type ); |
| 1416 | |
| 1417 | ob_start(); |
| 1418 | require tutor()->path . '/views/modal/question_answer_list.php'; |
| 1419 | $output = ob_get_clean(); |
| 1420 | |
| 1421 | wp_send_json_success( array( 'output' => $output ) ); |
| 1422 | } |
| 1423 | |
| 1424 | /** |
| 1425 | * Delete quiz question's answer |
| 1426 | * |
| 1427 | * @since 1.0.0 |
| 1428 | * |
| 1429 | * @return void send wp_json response |
| 1430 | */ |
| 1431 | public function tutor_quiz_builder_delete_answer() { |
| 1432 | tutor_utils()->checking_nonce(); |
| 1433 | |
| 1434 | global $wpdb; |
| 1435 | $answer_id = Input::post( 'answer_id', 0, Input::TYPE_INT ); |
| 1436 | |
| 1437 | if ( ! tutor_utils()->can_user_manage( 'quiz_answer', $answer_id ) ) { |
| 1438 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 1439 | } |
| 1440 | |
| 1441 | $wpdb->delete( $wpdb->prefix . 'tutor_quiz_question_answers', array( 'answer_id' => esc_sql( $answer_id ) ) ); |
| 1442 | wp_send_json_success(); |
| 1443 | } |
| 1444 | |
| 1445 | /** |
| 1446 | * Save quiz questions sorting |
| 1447 | * |
| 1448 | * @since 1.0.0 |
| 1449 | * |
| 1450 | * @return void |
| 1451 | */ |
| 1452 | public function tutor_quiz_question_sorting() { |
| 1453 | tutor_utils()->checking_nonce(); |
| 1454 | |
| 1455 | global $wpdb; |
| 1456 | |
| 1457 | // Data sanitizing by helper method. |
| 1458 | $question_ids = tutor_utils()->avalue_dot( 'sorted_question_ids', tutor_sanitize_data( $_POST ) ); //phpcs:ignore |
| 1459 | if ( is_array( $question_ids ) && count( $question_ids ) ) { |
| 1460 | $i = 0; |
| 1461 | foreach ( $question_ids as $key => $question_id ) { |
| 1462 | if ( tutor_utils()->can_user_manage( 'question', $question_id ) ) { |
| 1463 | $i++; |
| 1464 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_questions', array( 'question_order' => $i ), array( 'question_id' => $question_id ) ); |
| 1465 | } |
| 1466 | } |
| 1467 | } |
| 1468 | } |
| 1469 | |
| 1470 | /** |
| 1471 | * Save sorting data for quiz answers |
| 1472 | * |
| 1473 | * @since 1.0.0 |
| 1474 | * |
| 1475 | * @return void |
| 1476 | */ |
| 1477 | public function tutor_quiz_answer_sorting() { |
| 1478 | tutor_utils()->checking_nonce(); |
| 1479 | |
| 1480 | global $wpdb; |
| 1481 | $answer_ids = Input::post( 'sorted_answer_ids', array(), Input::TYPE_ARRAY ); |
| 1482 | if ( count( $answer_ids ) ) { |
| 1483 | $i = 0; |
| 1484 | foreach ( $answer_ids as $key => $answer_id ) { |
| 1485 | if ( tutor_utils()->can_user_manage( 'quiz_answer', $answer_id ) ) { |
| 1486 | $i++; |
| 1487 | $wpdb->update( $wpdb->prefix . 'tutor_quiz_question_answers', array( 'answer_order' => $i ), array( 'answer_id' => $answer_id ) ); |
| 1488 | } |
| 1489 | } |
| 1490 | } |
| 1491 | } |
| 1492 | |
| 1493 | /** |
| 1494 | * Mark answer as correct |
| 1495 | * |
| 1496 | * @since 1.0.0 |
| 1497 | * |
| 1498 | * @return void |
| 1499 | */ |
| 1500 | public function tutor_mark_answer_as_correct() { |
| 1501 | tutor_utils()->checking_nonce(); |
| 1502 | |
| 1503 | global $wpdb; |
| 1504 | |
| 1505 | $answer_id = Input::post( 'answer_id', 0, Input::TYPE_INT ); |
| 1506 | // get question info. |
| 1507 | $belong_question = $wpdb->get_row( |
| 1508 | $wpdb->prepare( |
| 1509 | " SELECT belongs_question_id, belongs_question_type |
| 1510 | FROM {$wpdb->tutor_quiz_question_answers} |
| 1511 | WHERE answer_id = %d |
| 1512 | LIMIT 1 |
| 1513 | ", |
| 1514 | $answer_id |
| 1515 | ) |
| 1516 | ); |
| 1517 | if ( $belong_question ) { |
| 1518 | // if question found update all answer is_correct to 0 except post answer. |
| 1519 | $question_type = $belong_question->belongs_question_type; |
| 1520 | $question_id = $belong_question->belongs_question_id; |
| 1521 | if ( 'true_false' === $question_type || 'single_choice' === $question_type ) { |
| 1522 | $update = $wpdb->query( |
| 1523 | $wpdb->prepare( |
| 1524 | "UPDATE {$wpdb->tutor_quiz_question_answers} |
| 1525 | SET is_correct = 0 |
| 1526 | WHERE belongs_question_id = %d |
| 1527 | AND answer_id != %d |
| 1528 | ", |
| 1529 | $question_id, |
| 1530 | $answer_id |
| 1531 | ) |
| 1532 | ); |
| 1533 | } |
| 1534 | } |
| 1535 | |
| 1536 | $input_value = Input::post( 'inputValue', '' ); |
| 1537 | |
| 1538 | if ( ! tutor_utils()->can_user_manage( 'quiz_answer', $answer_id ) ) { |
| 1539 | wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) ); |
| 1540 | } |
| 1541 | |
| 1542 | $answer = $wpdb->get_row( |
| 1543 | $wpdb->prepare( |
| 1544 | "SELECT * |
| 1545 | FROM {$wpdb->prefix}tutor_quiz_question_answers |
| 1546 | WHERE answer_id = %d |
| 1547 | LIMIT 0,1 ; |
| 1548 | ", |
| 1549 | $answer_id |
| 1550 | ) |
| 1551 | ); |
| 1552 | if ( 'single_choice' === $answer->belongs_question_type ) { |
| 1553 | $wpdb->update( |
| 1554 | $wpdb->prefix . 'tutor_quiz_question_answers', |
| 1555 | array( 'is_correct' => 0 ), |
| 1556 | array( 'belongs_question_id' => esc_sql( $answer->belongs_question_id ) ) |
| 1557 | ); |
| 1558 | } |
| 1559 | $wpdb->update( |
| 1560 | $wpdb->prefix . 'tutor_quiz_question_answers', |
| 1561 | array( 'is_correct' => esc_sql( $input_value ) ), |
| 1562 | array( 'answer_id' => esc_sql( $answer_id ) ) |
| 1563 | ); |
| 1564 | } |
| 1565 | |
| 1566 | /** |
| 1567 | * Rendering quiz for frontend |
| 1568 | * |
| 1569 | * @since 1.0.0 |
| 1570 | * |
| 1571 | * @return void send wp_json response |
| 1572 | */ |
| 1573 | public function tutor_render_quiz_content() { |
| 1574 | |
| 1575 | tutor_utils()->checking_nonce(); |
| 1576 | |
| 1577 | $quiz_id = Input::post( 'quiz_id', 0, Input::TYPE_INT ); |
| 1578 | |
| 1579 | if ( ! tutor_utils()->has_enrolled_content_access( 'quiz', $quiz_id ) ) { |
| 1580 | wp_send_json_error( array( 'message' => __( 'Access Denied.', 'tutor' ) ) ); |
| 1581 | } |
| 1582 | |
| 1583 | ob_start(); |
| 1584 | global $post; |
| 1585 | |
| 1586 | $post = get_post( $quiz_id ); |
| 1587 | setup_postdata( $post ); |
| 1588 | |
| 1589 | single_quiz_contents(); |
| 1590 | wp_reset_postdata(); |
| 1591 | |
| 1592 | $html = ob_get_clean(); |
| 1593 | wp_send_json_success( array( 'html' => $html ) ); |
| 1594 | } |
| 1595 | |
| 1596 | /** |
| 1597 | * Get attempt details |
| 1598 | * |
| 1599 | * @since 1.0.0 |
| 1600 | * |
| 1601 | * @param int $attempt_id required attempt id to get details. |
| 1602 | * |
| 1603 | * @return mixed object on success, null on failure |
| 1604 | */ |
| 1605 | public static function attempt_details( int $attempt_id ) { |
| 1606 | global $wpdb; |
| 1607 | $attempt_details = $wpdb->get_row( |
| 1608 | $wpdb->prepare( |
| 1609 | "SELECT * |
| 1610 | FROM {$wpdb->prefix}tutor_quiz_attempts |
| 1611 | WHERE attempt_id = %d |
| 1612 | ", |
| 1613 | $attempt_id |
| 1614 | ) |
| 1615 | ); |
| 1616 | return $attempt_details; |
| 1617 | } |
| 1618 | |
| 1619 | /** |
| 1620 | * Update quiz attempt info |
| 1621 | * |
| 1622 | * @since 1.0.0 |
| 1623 | * |
| 1624 | * @param int $attempt_id attempt id. |
| 1625 | * @param mixed $attempt_info serialize data. |
| 1626 | * |
| 1627 | * @return bool, true on success, false on failure |
| 1628 | */ |
| 1629 | public static function update_attempt_info( int $attempt_id, $attempt_info ) { |
| 1630 | global $wpdb; |
| 1631 | $table = $wpdb->prefix . 'tutor_quiz_attempts'; |
| 1632 | $update_info = $wpdb->update( |
| 1633 | $table, |
| 1634 | array( 'attempt_info' => $attempt_info ), |
| 1635 | array( 'attempt_id' => $attempt_id ) |
| 1636 | ); |
| 1637 | return $update_info ? true : false; |
| 1638 | } |
| 1639 | |
| 1640 | /** |
| 1641 | * Attempt delete ajax request handler |
| 1642 | * |
| 1643 | * @since 2.1.0 |
| 1644 | * |
| 1645 | * @return void wp_json response |
| 1646 | */ |
| 1647 | public function attempt_delete() { |
| 1648 | tutor_utils()->checking_nonce(); |
| 1649 | if ( current_user_can( 'administrator' ) || current_user_can( tutor()->instructor_role ) ) { |
| 1650 | $attempt_id = Input::post( 'id', 0, Input::TYPE_INT ); |
| 1651 | if ( $attempt_id ) { |
| 1652 | QuizModel::delete_quiz_attempt( $attempt_id ); |
| 1653 | wp_send_json_success( __( 'Attempt deleted successfully!', 'tutor' ) ); |
| 1654 | } else { |
| 1655 | wp_send_json_error( __( 'Invalid attempt ID', 'tutor' ) ); |
| 1656 | } |
| 1657 | } else { |
| 1658 | wp_send_json_error( __( 'You are not authorized to perform this action!', 'tutor' ) ); |
| 1659 | } |
| 1660 | } |
| 1661 | |
| 1662 | } |
| 1663 |