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<?PHP // $Id: editquestion.php,v 1.1 2004/07/30 14:50:57 kaipe Exp $
// Get a handle to the question type we are dealing with here
$qtypeobj = $QUIZ_QTYPES[CALCULATED];
if (isset($form->editdatasets) && $form->editdatasets) {
require("$CFG->dirroot/mod/quiz/questiontypes/datasetdependent/datasetitems.php");
exit();
}
$calculatedmessages = array();
if ($form) {
// Verify the quality of the question properties
if (empty($question->name)) {
$calculatedmessages[] = get_string('missingname', 'quiz');
}
if (empty($question->questiontext)) {
$calculatedmessages[] = get_string('missingquestiontext', 'quiz');
}
// Formula stuff (verify some of them)
$answers[0]->answer = trim(array_shift($form->answer))
and false===($formulaerrors =
quiz_qtype_calculated_find_formula_errors($answers[0]->answer))
or $answers[0]->answer
and $calculatedmessages[] = $formulaerrors
or $calculatedmesages[] = get_string('missingformula', 'quiz');
$answers[0]->tolerance = array_shift($form->tolerance)
or $answers[0]->tolerance = 0.0;
is_numeric($answers[0]->tolerance)
or $calculatedmessages[] = get_string('tolerancemustbenumeric', 'quiz');
$answers[0]->feedback = array_shift($form->feedback);
// Let's trust the drop down menus.
$answers[0]->tolerancetype = array_shift($form->tolerancetype);
$answers[0]->correctanswerlength = array_shift($form->correctanswerlength);
$answers[0]->fraction = array_shift($form->fraction);
// Fill with remaining answers, in case calculated.html
// supports multiple formulas.
$i = 1;
foreach ($form->answer as $key => $answer) {
if (trim($answer)) {
$answers[$i]->answer = trim($answer);
$answers[$i]->tolerance = $form->tolerance[$key]
or $answers[$i]->tolerance = 0.0;
$answers[$i]->tolerancetype = $form->tolerancetype[$key];
$answers[$i]->correctanswerlength =
$form->correctanswerlength[$key];
$answers[$i]->fraction = $form->fraction[$key];
$answers[$i]->feedback = $form->feedback[$key];
// Check for errors:
false === ($formulaerrors =
quiz_qtype_calculated_find_formula_errors($answer))
or $calculatedmessages[] = $formulaerrors;
is_numeric($answers[$i]->tolerance)
or $calculatedmessages[] = get_string('tolerancemustbenumeric',
'quiz');
// Increase answer count
++$i;
}
}
// Finally the units:
// Start with the default units...
$units[0]->unit = array_shift($form->unit);
array_shift($form->multiplier); // In case it is not 1.0
$units[0]->multiplier = 1.0; // Must!
// Accept other units if they have legal multipliers
$i = 1;
foreach ($form->multiplier as $key => $multiplier) {
if ($multiplier && is_numeric($multiplier)) {
$units[$i]->multiplier = $multiplier;
$units[$i]->unit = $form->unit[$key];
++$i;
}
}
if (empty($calculatedmessages)) {
// First page calculated.html passed all right!
if (!empty($form->dataset)) {
// Dataset definitions have been set
// Save question!
$subtypeoptions->answers = $answers;
$subtypeoptions->units = $units;
$question = $qtypeobj->save_question
($question, $form, $course, $subtypeoptions);
require("$CFG->dirroot/mod/quiz/questiontypes/datasetdependent/datasetitems.php");
exit();
} else {
$datasetmessage = '';
}
// Now continue by preparing for the second page questiondatasets.html
$possibledatasets = $qtypeobj->find_dataset_names(
$question->questiontext);
$mandatorydatasets = array();
foreach ($answers as $answer) {
$mandatorydatasets += $qtypeobj
->find_dataset_names($answer->answer);
}
$datasets = $qtypeobj->construct_dataset_menus(
$question, $mandatorydatasets, $possibledatasets);
print_heading_with_help(get_string("choosedatasetproperties", "quiz"), "questiondatasets", "quiz");
require("$CFG->dirroot/mod/quiz/questiontypes/datasetdependent/questiondatasets.html");
exit();
}
} else {
// First page in question wizard - calculated.html!
// The layout of the editing page will only support
// one formula alternative for calculated questions.
// However, the code behind supports up to six formulas
// and the database store and attempt/review framework
// does not have any limit.
if (!empty($question->id)) {
$answersraw= $qtypeobj->get_answers($question);
}
$answers= array();
for ($i=0; $i<6; $i++) {
// Make answer slots with default values
$answers[$i]->answer = "";
$answers[$i]->feedback = "";
$answers[$i]->fraction = "1.0";
$answers[$i]->tolerance = "0.01";
$answers[$i]->tolerancetype = "1";
$answers[$i]->correctanswerlength = "2";
}
if (!empty($answersraw)) {
$i=0;
foreach ($answersraw as $answer) {
$answers[$i] = $answer;
$i++;
}
}
// Units are handled the same way
// as for numerical questions
$units = array();
for ($i=0 ; $i<6 ; $i++) {
// Make unit slots, default as blank...
$units[$i]->multiplier = '';
$units[$i]->unit = '';
}
if (!empty($question->id) and $unitsraw = get_records(
'quiz_numerical_units', 'question', $question->id)) {
/// Find default unit and have it put in the zero slot
/// This procedure might be overridden later when
/// the unit is stripped form an answer...
foreach ($unitsraw as $key => $unit) {
if (1.0 == $unit->multiplier) {
/// Default unit found:
$units[0] = $unit;
unset($unitsraw[$key]);
break;
}
}
/// Fill remaining answer slots with whatsever left
if (!empty($unitsraw)) {
$i = 1; // The zero slot got the default unit...
foreach ($unitsraw as $unit) {
$units[$i] = $unit;
$i++;
}
}
} else {
$units[0]->multiplier = 1.0;
}
// Strip trailing zeros from multipliers
foreach ($units as $i => $unit) {
if (ereg('^(.*\\..(.*[^0])?)0+$', $unit->multiplier, $regs1)) {
if (ereg('^(.+)\\.0$', $regs1[1], $regs2)) {
$units[$i]->multiplier = $regs2[1];
} else {
$units[$i]->multiplier = $regs1[1];
}
}
}
}
print_heading_with_help(get_string("editingcalculated", "quiz"), "calculated", "quiz");
require("calculated.html");
?>
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