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MDL-40074 refactoring of quiz code

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to reuse code fro quiz attempt walk through
This commit is contained in:
Jamie Pratt 2013-07-06 13:22:44 +07:00
parent 07bbbcf174
commit 1cd7c92ece
3 changed files with 146 additions and 100 deletions
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4
mod/quiz/attemptlib.php
View File

@ -1333,12 +1333,12 @@ class quiz_attempt {
* @param int $timestamp the timestamp that should be stored as the modifed
* time in the database for these actions. If null, will use the current time.
*/
public function process_submitted_actions($timestamp, $becomingoverdue = false) {
public function process_submitted_actions($timestamp, $becomingoverdue = false, $postdata = null) {
global $DB;
$transaction = $DB->start_delegated_transaction();
$this->quba->process_all_actions($timestamp);
$this->quba->process_all_actions($timestamp, $postdata);
question_engine::save_questions_usage_by_activity($this->quba);
$this->attempt->timemodified = $timestamp;

139
mod/quiz/locallib.php
View File

@ -137,6 +137,145 @@ function quiz_create_attempt(quiz $quizobj, $attemptnumber, $lastattempt, $timen
return $attempt;
}
/**
* Start a normal, new, quiz attempt.
*
* @param quiz $quizobj the quiz object to start an attempt for.
* @param question_usage_by_activity $quba
* @param object $attempt
* @param integer $attemptnumber starting from 1
* @param integer $timenow the attempt start time
* @return object modified attempt object
* @throws moodle_exception if a random question exhausts the available questions
*/
function quiz_start_new_attempt($quizobj, $quba, $attempt, $attemptnumber, $timenow) {
// Fully load all the questions in this quiz.
$quizobj->preload_questions();
$quizobj->load_questions();
// Add them all to the $quba.
$idstoslots = array();
$questionsinuse = array_keys($quizobj->get_questions());
foreach ($quizobj->get_questions() as $i => $questiondata) {
if ($questiondata->qtype != 'random') {
if (!$quizobj->get_quiz()->shuffleanswers) {
$questiondata->options->shuffleanswers = false;
}
$question = question_bank::make_question($questiondata);
} else {
$question = question_bank::get_qtype('random')->choose_other_question(
$questiondata, $questionsinuse, $quizobj->get_quiz()->shuffleanswers);
if (is_null($question)) {
throw new moodle_exception('notenoughrandomquestions', 'quiz',
$quizobj->view_url(), $questiondata);
}
}
$idstoslots[$i] = $quba->add_question($question, $questiondata->maxmark);
$questionsinuse[] = $question->id;
}
// Start all the questions.
if ($attempt->preview) {
$variantoffset = rand(1, 100);
} else {
$variantoffset = $attemptnumber;
}
$quba->start_all_questions(
new question_variant_pseudorandom_no_repeats_strategy($variantoffset), $timenow);
// Update attempt layout.
$newlayout = array();
foreach (explode(',', $attempt->layout) as $qid) {
if ($qid != 0) {
$newlayout[] = $idstoslots[$qid];
} else {
$newlayout[] = 0;
}
}
$attempt->layout = implode(',', $newlayout);
return $attempt;
}
/**
* Start a subsequent new attempt, in each attempt builds on last mode.
*
* @param question_usage_by_activity $quba this question usage
* @param object $attempt this attempt
* @param object $lastattempt last attempt
* @return object modified attempt object
*
*/
function quiz_start_attempt_built_on_last($quba, $attempt, $lastattempt) {
$oldquba = question_engine::load_questions_usage_by_activity($lastattempt->uniqueid);
$oldnumberstonew = array();
foreach ($oldquba->get_attempt_iterator() as $oldslot => $oldqa) {
$newslot = $quba->add_question($oldqa->get_question(), $oldqa->get_max_mark());
$quba->start_question_based_on($newslot, $oldqa);
$oldnumberstonew[$oldslot] = $newslot;
}
// Update attempt layout.
$newlayout = array();
foreach (explode(',', $lastattempt->layout) as $oldslot) {
if ($oldslot != 0) {
$newlayout[] = $oldnumberstonew[$oldslot];
} else {
$newlayout[] = 0;
}
}
$attempt->layout = implode(',', $newlayout);
return $attempt;
}
/**
* The save started question usage and quiz attempt in db and log the started attempt.
*
* @param quiz $quizobj
* @param question_usage_by_activity $quba
* @param object $attempt
* @return object attempt object with uniqueid and id set.
*/
function quiz_attempt_save_started($quizobj, $quba, $attempt) {
global $DB;
// Save the attempt in the database.
question_engine::save_questions_usage_by_activity($quba);
$attempt->uniqueid = $quba->get_id();
$attempt->id = $DB->insert_record('quiz_attempts', $attempt);
// Log the new attempt.
if ($attempt->preview) {
add_to_log($quizobj->get_courseid(), 'quiz', 'preview', 'view.php?id='.$quizobj->get_cmid(),
$quizobj->get_quizid(), $quizobj->get_cmid());
} else {
add_to_log($quizobj->get_courseid(), 'quiz', 'attempt', 'review.php?attempt='.$attempt->id,
$quizobj->get_quizid(), $quizobj->get_cmid());
}
return $attempt;
}
/**
* Fire an event to tell the rest of Moodle a quiz attempt has started.
*
* @param object $attempt
* @param quiz $quizobj
*/
function quiz_fire_attempt_started_event($attempt, $quizobj) {
// Trigger event.
$eventdata = new stdClass();
$eventdata->component = 'mod_quiz';
$eventdata->attemptid = $attempt->id;
$eventdata->timestart = $attempt->timestart;
$eventdata->timestamp = $attempt->timestart;
$eventdata->userid = $attempt->userid;
$eventdata->quizid = $quizobj->get_quizid();
$eventdata->cmid = $quizobj->get_cmid();
$eventdata->courseid = $quizobj->get_courseid();
events_trigger('quiz_attempt_started', $eventdata);
}
/**
* Returns an unfinished attempt (if there is one) for the given

103
mod/quiz/startattempt.php
View File

@ -169,111 +169,18 @@ $quba->set_preferred_behaviour($quizobj->get_quiz()->preferredbehaviour);
// Create the new attempt and initialize the question sessions
$timenow = time(); // Update time now, in case the server is running really slowly.
$attempt = quiz_create_attempt($quizobj, $attemptnumber, $lastattempt, $timenow,
$quizobj->is_preview_user());
$attempt = quiz_create_attempt($quizobj, $attemptnumber, $lastattempt, $timenow, $quizobj->is_preview_user());
if (!($quizobj->get_quiz()->attemptonlast && $lastattempt)) {
// Starting a normal, new, quiz attempt.
// Fully load all the questions in this quiz.
$quizobj->preload_questions();
$quizobj->load_questions();
// Add them all to the $quba.
$idstoslots = array();
$questionsinuse = array_keys($quizobj->get_questions());
foreach ($quizobj->get_questions() as $i => $questiondata) {
if ($questiondata->qtype != 'random') {
if (!$quizobj->get_quiz()->shuffleanswers) {
$questiondata->options->shuffleanswers = false;
}
$question = question_bank::make_question($questiondata);
} else {
$question = question_bank::get_qtype('random')->choose_other_question(
$questiondata, $questionsinuse, $quizobj->get_quiz()->shuffleanswers);
if (is_null($question)) {
throw new moodle_exception('notenoughrandomquestions', 'quiz',
$quizobj->view_url(), $questiondata);
}
}
$idstoslots[$i] = $quba->add_question($question, $questiondata->maxmark);
$questionsinuse[] = $question->id;
}
// Start all the questions.
if ($attempt->preview) {
$variantoffset = rand(1, 100);
} else {
$variantoffset = $attemptnumber;
}
$quba->start_all_questions(
new question_variant_pseudorandom_no_repeats_strategy($variantoffset), $timenow);
// Update attempt layout.
$newlayout = array();
foreach (explode(',', $attempt->layout) as $qid) {
if ($qid != 0) {
$newlayout[] = $idstoslots[$qid];
} else {
$newlayout[] = 0;
}
}
$attempt->layout = implode(',', $newlayout);
$attempt = quiz_start_new_attempt($quizobj, $quba, $attempt, $attemptnumber, $timenow);
} else {
// Starting a subsequent attempt in each attempt builds on last mode.
$oldquba = question_engine::load_questions_usage_by_activity($lastattempt->uniqueid);
$oldnumberstonew = array();
foreach ($oldquba->get_attempt_iterator() as $oldslot => $oldqa) {
$newslot = $quba->add_question($oldqa->get_question(), $oldqa->get_max_mark());
$quba->start_question_based_on($newslot, $oldqa);
$oldnumberstonew[$oldslot] = $newslot;
}
// Update attempt layout.
$newlayout = array();
foreach (explode(',', $lastattempt->layout) as $oldslot) {
if ($oldslot != 0) {
$newlayout[] = $oldnumberstonew[$oldslot];
} else {
$newlayout[] = 0;
}
}
$attempt->layout = implode(',', $newlayout);
$attempt = quiz_start_attempt_built_on_last($quba, $attempt, $lastattempt);
}
// Save the attempt in the database.
$transaction = $DB->start_delegated_transaction();
question_engine::save_questions_usage_by_activity($quba);
$attempt->uniqueid = $quba->get_id();
$attempt->id = $DB->insert_record('quiz_attempts', $attempt);
// Log the new attempt.
if ($attempt->preview) {
add_to_log($course->id, 'quiz', 'preview', 'view.php?id=' . $quizobj->get_cmid(),
$quizobj->get_quizid(), $quizobj->get_cmid());
} else {
add_to_log($course->id, 'quiz', 'attempt', 'review.php?attempt=' . $attempt->id,
$quizobj->get_quizid(), $quizobj->get_cmid());
}
// Trigger event.
$eventdata = new stdClass();
$eventdata->component = 'mod_quiz';
$eventdata->attemptid = $attempt->id;
$eventdata->timestart = $attempt->timestart;
$eventdata->timestamp = $attempt->timestart;
$eventdata->userid = $attempt->userid;
$eventdata->quizid = $quizobj->get_quizid();
$eventdata->cmid = $quizobj->get_cmid();
$eventdata->courseid = $quizobj->get_courseid();
events_trigger('quiz_attempt_started', $eventdata);
$attempt = quiz_attempt_save_started($quizobj, $quba, $attempt);
quiz_fire_attempt_started_event($attempt, $quizobj);
$transaction->allow_commit();