我想扩展此插件，以支持超过4个问题选项和2个以上答案。有人可以为我提供通用插件或扩展该插件的代码吗？还从下面的插件文件粘贴代码-
https://moodle.org/plugins/qformat_csv
public function provide_import() {
return true;
}
public function provide_export() {
return true;
}
/**
* @return string the file extension (including .) that is normally used for
* files handled by this plugin.
*/
public function export_file_extension() {
return '.csv';
}
public function readquestions($lines) {
global $CFG;
require_once($CFG->libdir . '/csvlib.class.php');
question_bank::get_qtype('multianswer'); // Ensure the multianswer code is loaded.
$questions = array();
$question = $this->defaultquestion();
$headers = explode(',', $lines[0]);
$answertwo = 0;
foreach ($headers as $key => $value) {
if (trim($value) == "Answer 2") {
$answertwo = $key;
}
}
// Get All the Header Values from the CSV file.
for ($rownum = 1; $rownum < count($lines); $rownum++) {
$rowdata = str_getcsv($lines[$rownum], ",", '"'); // Ignore the commas(,) within the double quotes (").
$columncount = count($rowdata);
$headerscount = count($headers);
if ($columncount != $headerscount || $columncount != 7 || $headerscount != 7) {
if ($columncount > $headerscount ) {
// There are more than 7 values or there will be extra comma making them more then 7 values.
echo get_string('commma_error', 'qformat_csv', $rownum);
return 0;
} else if ($columncount < $headerscount) {
// Entire question with options and answer is not in one line, new line found.
echo get_string('newline_error', 'qformat_csv', $rownum);
return 0;
} else {
// There are more than 7 values or there will be extra comma making them more then 7 values.
echo get_string('csv_file_error', 'qformat_csv', $rownum);
return 0;
}
}
for ($linedata = 0; $linedata < count($rowdata); $linedata++) {
if ($answertwo != 0 && !empty(trim($rowdata[$answertwo]))) {
$fraction = 0.5;
$question->single = 0;
} else {
$fraction = 1;
$question->single = 1;
}
$question->qtype = 'multichoice';
$question->name = $this->create_default_question_name($rownum, get_string('questionname', 'question'));
if ($headers[$linedata] == 'questiontext') {
$question->questiontext = htmlspecialchars(trim($rowdata[$linedata]), ENT_NOQUOTES);
} else if ($headers[$linedata] == 'generalfeedback') {
// If extra column is provide with header 'generalfeedback' then that feedback will get applied.
$question->generalfeedback = $rowdata[$linedata];
$question->generalfeedbackformat = FORMAT_HTML;
} else if ($headers[$linedata] == 'defaultgrade') {
$question->defaultgrade = $this->text_field($rowdata[$linedata]);
} else if ($headers[$linedata] == 'penalty') {
$question->penalty = $rowdata[$linedata];
} else if ($headers[$linedata] == 'hidden') {
$question->hidden = $rowdata[$linedata];
} else if ($headers[$linedata] == 'answernumbering') {
$question->answernumbering = $rowdata[$linedata];
} else if ($headers[$linedata] == 'correctfeedback') {
$question->correctfeedback = $this->text_field($rowdata[$linedata]);
} else if ($headers[$linedata] == 'partiallycorrectfeedback') {
$question->partiallycorrectfeedback = $this->text_field($rowdata[$linedata]);
} else if ($headers[$linedata] == 'incorrectfeedback') {
$question->incorrectfeedback = $this->text_field($rowdata[$linedata]);
} else if ($headers[$linedata] == 'A') {
$correctans1 = $linedata + 4;
$correctans2 = $linedata + 5;
$question->answer[] = $this->text_field($rowdata[$linedata]);
if (trim($rowdata[$correctans1]) == 'A' || trim($rowdata[$correctans2]) == 'A') {
$question->fraction[] = $fraction;
} else {
$question->fraction[] = 0;
}
$question->feedback[] = $this->text_field('');
} else if ($headers[$linedata] == 'B') {
$correctans1 = $linedata + 3;
$correctans2 = $linedata + 4;
$question->answer[] = $this->text_field($rowdata[$linedata]);
if (trim($rowdata[$correctans1]) == 'B' || trim($rowdata[$correctans2]) == 'B') {
$question->fraction[] = $fraction;
} else {
$question->fraction[] = 0;
}
$question->feedback[] = $this->text_field('');
} else if ($headers[$linedata] == 'C') {
$correctans1 = $linedata + 2;
$correctans2 = $linedata + 3;
$question->answer[] = $this->text_field($rowdata[$linedata]);
if (trim($rowdata[$correctans1]) == 'C' || trim($rowdata[$correctans2]) == 'C') {
$question->fraction[] = $fraction;
} else {
$question->fraction[] = 0;
}
$question->feedback[] = $this->text_field('');
} else if ($headers[$linedata] == 'D') {
$correctans1 = $linedata + 1;
$correctans2 = $linedata + 2;
$question->answer[] = $this->text_field($rowdata[$linedata]);
if (trim($rowdata[$correctans1]) == 'D' || trim($rowdata[$correctans2]) == 'D') {
$question->fraction[] = $fraction;
} else {
$question->fraction[] = 0;
}
$question->feedback[] = $this->text_field('');
}
}
$questions[] = $question;
// Clear array for next question set.
$question = $this->defaultquestion();
}
return $questions;
}
protected function text_field($text) {
return array(
'text' => htmlspecialchars(trim($text), ENT_NOQUOTES),
'format' => FORMAT_HTML,
'files' => array(),
);
}
public function readquestion($lines) {
// This is no longer needed but might still be called by default.php.
return;
}
public function writequestion($question) {
global $OUTPUT;
// Output depends on question type.
if ($globals['header']) {
if ($question->qtype == 'category') {// If Write "category to file" i selected then no need to add "\n" in header.
$expout = "questiontext,A,B,C,D,Answer 1,Answer 2";
} else {
$expout .= "questiontext,A,B,C,D,Answer 1,Answer 2\n";
}
$globals['header'] = false;
}
$answercount = 0;
$rightanswercount = 0;
switch($question->qtype) {
case 'multichoice':
if (count($question->options->answers) != 4 ) {
break;
}
$expout .= '"'.$question->questiontext.'"'.',';
foreach ($question->options->answers as $answer) {
$answercount++;
if ($answer->fraction == 1 && $question->options->single) {
switch ($answercount) {
case 1:
$rightanswer = 'A'.',';
break;
case 2:
$rightanswer = 'B'.',';
break;
case 3:
$rightanswer = 'C'.',';
break;
case 4:
$rightanswer = 'D'.',';
break;
default:
$rightanswer = '';
break;
}
} else if ($answer->fraction == 0.5 && !$question->options->single) {
$rightanswercount ++;
$comma = "";
if ( $rightanswercount <= 1 ) {
$comma = ","; // Add comma to first answer i.e. to 'Answer 1'.
}
switch ($answercount) {
case 1:
$rightanswer .= 'A'.$comma;
break;
case 2:
$rightanswer .= 'B'.$comma;
break;
case 3:
$rightanswer .= 'C'.$comma;
break;
case 4:
$rightanswer .= 'D'.$comma;
break;
default:
$rightanswer = '';
break;
}
}
$expout .= '"'.$answer->answer.'"'.',';
}
$expout .= $rightanswer;
break;
}
return $expout;
}
}