/**
* Render an icon, optionally with the word 'Preview' beside it, to preview
* a given question.
* @param int $questionid the id of the question to be previewed.
* @param context $context the context in which the preview is happening.
* Must be a course or category context.
* @param bool $showlabel if true, show the word 'Preview' after the icon.
* If false, just show the icon.
*/
public function question_preview_link($questionid, context $context, $showlabel)
{
if ($showlabel) {
$alt = '';
$label = ' ' . get_string('preview');
$attributes = array();
} else {
$alt = get_string('preview');
$label = '';
$attributes = array('title' => $alt);
}
$image = $this->pix_icon('t/preview', $alt, '', array('class' => 'iconsmall'));
$link = question_preview_url($questionid, null, null, null, null, $context);
$action = new popup_action('click', $link, 'questionpreview', question_preview_popup_params());
return $this->action_link($link, $image . $label, $action, $attributes);
}
/**
* Delete the current preview, if any, and redirect to start a new preview.
* @param int $previewid
* @param int $questionid
* @param object $displayoptions
* @param object $context
*/
function restart_preview($previewid, $questionid, $displayoptions, $context)
{
global $DB;
if ($previewid) {
$transaction = $DB->start_delegated_transaction();
question_engine::delete_questions_usage_by_activity($previewid);
$transaction->allow_commit();
}
redirect(question_preview_url($questionid, $displayoptions->behaviour, $displayoptions->maxmark, $displayoptions, $displayoptions->variant, $context));
}
$options->load_user_defaults();
$options->set_from_request();
$PAGE->set_url(question_preview_url($id, $options->behaviour, $options->maxmark, $options));
// Get and validate exitsing preview, or start a new one.
$previewid = optional_param('previewid', 0, PARAM_INT);
if ($previewid) {
if (!isset($SESSION->question_previews[$previewid])) {
print_error('notyourpreview', 'question');
}
try {
$quba = question_engine::load_questions_usage_by_activity($previewid);
} catch (Exception $e) {
print_error('submissionoutofsequencefriendlymessage', 'question',
question_preview_url($question->id, $options->behaviour,
$options->maxmark, $options), null, $e);
}
$slot = $quba->get_first_question_number();
$usedquestion = $quba->get_question($slot);
if ($usedquestion->id != $question->id) {
print_error('questionidmismatch', 'question');
}
$question = $usedquestion;
$options->variant = $quba->get_variant($slot);
} else {
$quba = question_engine::make_questions_usage_by_activity('core_question_preview',
get_context_instance_by_id($category->contextid));
$quba->set_preferred_behaviour($options->behaviour);
$slot = $quba->add_question($question, $options->maxmark);
public function preview_question_url($question) {
return question_preview_url($question->id, null, null, null, null,
$this->contexts->lowest());
}
/**
* @param object $quiz the quiz settings
* @param object $question the question
* @return moodle_url to preview this question with the options from this quiz.
*/
function quiz_question_preview_url($quiz, $question) {
// Get the appropriate display options.
$displayoptions = mod_quiz_display_options::make_from_quiz($quiz,
mod_quiz_display_options::DURING);
$maxmark = null;
if (isset($question->maxmark)) {
$maxmark = $question->maxmark;
}
// Work out the correcte preview URL.
return question_preview_url($question->id, $quiz->preferredbehaviour,
$maxmark, $displayoptions);
}
/**
* Get the URL to preview a question.
* @param stdClass $questiondata the data defining the question.
* @return moodle_url the URL.
*/
public function preview_question_url($questiondata)
{
return question_preview_url($questiondata->id, null, null, null, null, $this->get_most_specific_context());
}
$PAGE->set_pagelayout('popup');
// Get and validate display options.
$maxvariant = min($question->get_num_variants(), QUESTION_PREVIEW_MAX_VARIANTS);
$options = new question_preview_options($question);
$options->load_user_defaults();
$options->set_from_request();
$PAGE->set_url(question_preview_url($id, $options->behaviour, $options->maxmark, $options, $options->variant, $context));
// Get and validate existing preview, or start a new one.
$previewid = optional_param('previewid', 0, PARAM_INT);
if ($previewid) {
try {
$quba = question_engine::load_questions_usage_by_activity($previewid);
} catch (Exception $e) {
// This may not seem like the right error message to display, but
// actually from the user point of view, it makes sense.
print_error('submissionoutofsequencefriendlymessage', 'question', question_preview_url($question->id, $options->behaviour, $options->maxmark, $options, $options->variant, $context), null, $e);
}
if ($quba->get_owning_context()->instanceid != $USER->id) {
print_error('notyourpreview', 'question');
}
$slot = $quba->get_first_question_number();
$usedquestion = $quba->get_question($slot);
if ($usedquestion->id != $question->id) {
print_error('questionidmismatch', 'question');
}
$question = $usedquestion;
$options->variant = $quba->get_variant($slot);
} else {
$quba = question_engine::make_questions_usage_by_activity('core_question_preview', context_user::instance($USER->id));
$quba->set_preferred_behaviour($options->behaviour);
$slot = $quba->add_question($question, $options->maxmark);
$options->set_from_request();
$PAGE->set_url(question_preview_url($id, $options->behaviour, $options->maxmark,
$options, $options->variant, $context));
// Get and validate existing preview, or start a new one.
$previewid = optional_param('previewid', 0, PARAM_INT);
if ($previewid) {
try {
$quba = question_engine::load_questions_usage_by_activity($previewid);
} catch (Exception $e) {
// This may not seem like the right error message to display, but
// actually from the user point of view, it makes sense.
print_error('submissionoutofsequencefriendlymessage', 'question',
question_preview_url($question->id, $options->behaviour,
$options->maxmark, $options, $options->variant, $context), null, $e);
}
if ($quba->get_owning_context()->instanceid != $USER->id) {
print_error('notyourpreview', 'question');
}
$slot = $quba->get_first_question_number();
$usedquestion = $quba->get_question($slot);
if ($usedquestion->id != $question->id) {
print_error('questionidmismatch', 'question');
}
$question = $usedquestion;
$options->variant = $quba->get_variant($slot);
} else {
/**
* @param object $offlinequiz the offlinequiz settings
* @param object $question the question
* @return moodle_url to preview this question with the options from this offlinequiz.
*/
function offlinequiz_question_preview_url($offlinequiz, $question)
{
// Get the appropriate display options.
$displayoptions = mod_offlinequiz_display_options::make_from_offlinequiz($offlinequiz);
$maxmark = null;
if (isset($question->maxmark)) {
$maxmark = $question->maxmark;
}
// Work out the correct preview URL.
return question_preview_url($question->id, null, $maxmark, $displayoptions);
}
$variantmatched = true;
} else {
if (empty($question->deployedseeds)) {
echo html_writer::tag('p', stack_string('questionnotdeployedyet') . ' ' . $OUTPUT->action_icon(question_preview_url($questionid, null, null, null, null, $context), new pix_icon('t/preview', get_string('preview'))));
} else {
$notestable = new html_table();
$notestable->head = array(stack_string('variant'), stack_string('questionnote'));
$prtstable->attributes['class'] = 'generaltable stacktestsuite';
foreach ($question->deployedseeds as $key => $deployedseed) {
if (!is_null($question->seed) && $question->seed == $deployedseed) {
$choice = html_writer::tag('b', $deployedseed, array('title' => stack_string('currentlyselectedvariant')));
$variantmatched = true;
} else {
$choice = html_writer::link(new moodle_url($PAGE->url, array('seed' => $deployedseed)), $deployedseed, array('title' => stack_string('testthisvariant')));
}
$choice .= ' ' . $OUTPUT->action_icon(question_preview_url($questionid, null, null, null, $key + 1, $context), new pix_icon('t/preview', get_string('preview')));
if ($canedit) {
$choice .= ' ' . $OUTPUT->action_icon(new moodle_url('/question/type/stack/deploy.php', $urlparams + array('undeploy' => $deployedseed, 'sesskey' => sesskey())), new pix_icon('t/delete', stack_string('undeploy')));
}
// Print out question notes of all deployed versions.
$qn = question_bank::load_question($questionid);
$qn->seed = (int) $deployedseed;
$cn = $qn->get_context();
$qunote = question_engine::make_questions_usage_by_activity('qtype_stack', $cn);
$qunote->set_preferred_behaviour('adaptive');
$slotnote = $qunote->add_question($qn, $qn->defaultmark);
$qunote->start_question($slotnote);
// Check if the question note has already been deployed.
if ($qn->get_question_summary() == $question->get_question_summary()) {
$variantdeployed = true;
}
public function preview_question_url($question) {
return question_preview_url($question->id);
}
$questionid = required_param('questionid', PARAM_INT);
// Load the necessary data.
$questiondata = $DB->get_record('question', array('id' => $questionid), '*', MUST_EXIST);
$question = question_bank::load_question($questionid);
// Process any other URL parameters, and do require_login.
list($context, $notused, $urlparams) = qtype_stack_setup_question_test_page($question);
// Check permissions.
question_require_capability_on($questiondata, 'edit');
// Initialise $PAGE.
$PAGE->set_url('/question/type/stack/tidyquestion.php', $urlparams);
$title = stack_string('tidyquestionx', format_string($question->name));
$PAGE->set_title($title);
$PAGE->set_heading($COURSE->fullname);
$PAGE->set_pagelayout('admin');
// The URL back to the preview page.
$returnurl = question_preview_url($questionid, null, null, null, null, $context);
// Create the question usage we will use.
$quba = question_engine::make_questions_usage_by_activity('qtype_stack', $context);
$quba->set_preferred_behaviour('adaptive');
$slot = $quba->add_question($question, $question->defaultmark);
$quba->start_question($slot);
// Now we are going to display the question with each input box containing the
// name of that input, and each feedback area displaying something like
// "Feedback from PRT {name}". To do this, first we submit the right answer to
// get the question into a state where all feedback will be displayed.
$response = $question->get_correct_response();
$response['-submit'] = 1;
$quba->process_action($slot, $response);
// Now we want to be able to display the question with the wrong input values
// and PRT feedback. We do that by polluting the question's input state and
// PRT result caches with the data we want to display, then the renderer will
