QnA/editQuestion.php at master · ssavva05/QnA · GitHub

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<?php require "includes/config.php"; ?>
<?php
$qid = $_GET['var'];
$qtitle = $_GET['var1'];
$question = $_GET['question'];
$answer = $_GET['answer'];
$action = $_GET['action'];
$totalans = $_GET['totalans'];
$refresh = $_GET['r'];
$i = 1;

$answerValue = "none";
//$_SESSION['usertxt']=array($answer);
if ($refresh == 0)
    $_SESSION['usertxt'] = array(30);


//retrieve number of answers if action is edit
if ($answer == -1) {
    $stmt = $db->prepare('SELECT acounter FROM question WHERE qid=:qid AND lid=:lid;');
    $stmt->bindParam(':qid', $question);
    $stmt->bindParam(':lid', $qid);
    $stmt->execute();
    $result = $stmt->fetch(PDO::FETCH_ASSOC);
    $answer = $result['acounter'];

    $stmt = $db->prepare('SELECT qcounter FROM lecture WHERE lid=:lid;');
    $stmt->bindParam(':lid', $qid);
    $stmt->execute();
    $result = $stmt->fetch(PDO::FETCH_ASSOC);
    $qcounter = $result['qcounter'];
} else if ($action == 1)
    $qcounter = $question;
else if ($action == 0) {
    $stmt = $db->prepare('SELECT qcounter FROM lecture WHERE lid=:lid;');
    $stmt->bindParam(':lid', $qid);
    $stmt->execute();
    $result = $stmt->fetch(PDO::FETCH_ASSOC);
    $qcounter = $result['qcounter'];
}
?>
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Edit Question</title>
        <meta name="viewport" content="width=device-width, initial-scale=1.0">

        <link href="css1/bootstrap.css" rel="stylesheet" media="screen">
        <link href="css1/pstyle.css" rel="stylesheet" media="screen">
        <link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">


        <script src="functionEditQuestion.js"></script>
    </head>

    <body>

        <h1>Question Tab<h1>
        <form method="post">
<?php
//if action is add question
if ($action == 1) {
    if ($refresh == 0) {
        ?>
                    Name:  Question <?php if ($action == 1) echo $question + 1;
            else echo $question; ?> <br>
                    Question Body:  <input type="text" name="questionbody" id="qstnd" value="Write the body of the question here" size="35"><br>
                    Choose the correct one:<br>
                    Answers:
                    <input type="text" name="<?php echo $i; ?>" id="ansr<?php echo $i; ?>" value="Answer <?php echo $i; ?>">
                    <input type="submit" class="w3-button w3-xlarge w3-circle w3-green w3-card-4" name="plus" value="+">
                    <input type="radio" id="radioAnswer <?php echo $answer; ?>" name="radioAnswer" value="<?php echo $i; ?>" ><br>
                    <?php }else {
                    ?>

                    Name: Question <?php if ($action == 1) echo $question + 1;
            else echo $question; ?><br>
                    Question Body:  <input type="text" name="questionbody" id="qstnd" value="<?php echo $_SESSION['usertxt'][0] ?>" size="35"><br>
                    Choose the correct one:<br>
                    Answers:
                    <input type="text" name="<?php echo $i; ?>" id="ansr<?php echo $i; ?>" value="<?php echo $_SESSION['usertxt'][$i]; ?>">
                    <input type="submit" class="w3-button w3-xlarge w3-circle w3-green w3-card-4" name="plus" value="+">
                    <input type="radio" id="radioAnswer <?php echo $answer; ?>" name="radioAnswer" value="<?php echo $i; ?>" ><br>
                    <?php while ($i < $answer) { ?>
                        <input type="text" name="<?php echo $i + 1; ?>" id="ansr<?php echo $i + 1; ?>" value="<?php echo $_SESSION['usertxt'][$i + 1]; ?>">
                        <input type="radio" id="radioAnswer <?php echo $answer; ?>" name="radioAnswer" value="<?php echo $i + 1; ?>">
                        <?php if ($i != $answer - 1) { ?><br>
                            <?php
                        }
                        $i++;
                    }if ($answer > 1) {
                        ?>
                        <input type="submit" class="w3-button w3-xlarge w3-circle w3-red w3-card-4" name="minus"  value="-"><br>
                    <?php
                    }
                }
            }
            //if action is edit question, retrieve from db the answers
            else {
                $stmt = $db->prepare('SELECT textofquestion FROM question WHERE qid=:qid AND lid=:lid;');
                $stmt->bindParam(':qid', $question);
                $stmt->bindParam(':lid', $qid);
                $stmt->execute();
                $result = $stmt->fetch(PDO::FETCH_ASSOC);

                if ($refresh == 0) {
                    ?>
                    Name: Question <?php if ($action == 1) echo $question + 1;
                    else echo $question; ?><br>
                    Question Body:  <input type="text" name="questionbody" id="qstnd" value="<?php echo $result['textofquestion']; ?>" size="35"><br>
                    Choose the correct one:<br>
                    Answers:
                    <?php
                    $stmt = $db->prepare('SELECT textofanswer FROM answer WHERE qid=:qid AND lid=:lid;');
                    $stmt->bindParam(':qid', $question);
                    $stmt->bindParam(':lid', $qid);
                    $stmt->execute();
                    while ($result = $stmt->fetch(PDO::FETCH_ASSOC)) {
                        if ($i == 1) {
                            ?>
                            <input type="text" name="<?php echo $i; ?>" id="ansr<?php echo $i; ?>" value="<?php echo $result['textofanswer']; ?>">
                            <input type="submit" name="plus" class="w3-button w3-xlarge w3-circle w3-green w3-card-4" value="+">
                            <input type="radio" id="radioAnswer <?php echo $answer; ?>" name="radioAnswer" value="<?php echo $i; ?>" ><br>
                            <?php } else if ($i <= $answer) {
                            ?>
                            <input type="text" name="<?php echo $i; ?>" id="ansr<?php echo $i; ?>" value="<?php echo $result['textofanswer']; ?>">
                            <input type="radio" id="radioAnswer <?php echo $answer; ?>" name="radioAnswer" value="<?php echo $i; ?>" >
                            <?php if ($i <= $answer - 1) { ?><br><?php
                            }
                        }
                        $i++;
                    }
                    $j = $i - 1;
                    if ($j == $answer && $answer > 1) {
                        ?>
                        <input type="submit" name="minus" class="w3-button w3-xlarge w3-circle w3-red w3-card-4" value="-"><br>
            <?php } else {
            ?><br><?php
        }
    } else {
        $j = 1;
        ?>
                    Name: Question <?php if ($action == 1) echo $question + 1;
        else echo $question; ?><br>
                    Question Body:  <input type="text" name="questionbody" id="qstnd" value="<?php echo $_SESSION['usertxt'][0] ?>" size="35"><br>
                    Choose the correct one:<br>
                    Answers:
                    <input type="text" name="<?php echo $i; ?>" id="ansr<?php echo $i; ?>" value="<?php echo $_SESSION['usertxt'][$j]; ?>">
                    <input type="submit" name="plus" class="w3-button w3-xlarge w3-circle w3-green w3-card-4" value="+">
                    <input type="radio" id="radioAnswer <?php echo $answer; ?>" name="radioAnswer" value="<?php echo $j; ?>">
                    <?php if ($j <= $answer - 1 || $answer == 1) { ?><br>	<?php
                    }
                }
                while ($j < $answer) {
                    ?>
                    <input type="text" name="<?php echo $j + 1; ?>" id="ansr<?php echo $j + 1; ?>" value="<?php echo $_SESSION['usertxt'][$j + 1]; ?>">
                    <input type="radio" id="radioAnswer <?php echo $j + 1; ?>" name="radioAnswer" value="<?php echo $j + 1; ?>">

        <?php if ($j < $answer - 1) { ?><br><?php
        }
        $j++;
    }
    if (($j > $answer || ($refresh == 1 && $action != 1)) && $answer > 1) {
        ?>
                    <input type="submit" name="minus" class="w3-button w3-xlarge w3-circle w3-red w3-card-4" value="-"><br>
        <?php
    }
}
?>
            <input class="btn btn-lg btn-success navbar-btn active v1 " type="submit" name="submit" value="Submit" id="submit">
            <input class="btn btn-lg btn-warning navbar-btn active v1 " type="button" onclick="deleteAllAnswers(<?php echo $qid; ?>, '<?php echo $qtitle; ?>',<?php echo $qcounter; ?>,<?php echo $totalans; ?>,<?php echo $action; ?>)" value="Clear All">
        </form>
    </body>
</html>
<?php
if ($action == 1) {
    //write documents
    if (isset($_POST['submit'])) {
        if (isset($_POST['radioAnswer'])) {
            $question++;
            $answerValue = $_POST[$_POST['radioAnswer']];
            $stmt = $db->prepare('INSERT INTO question (qid,lid,textofquestion,textofanswer, acounter) values (:qid,:lid,:tq,:ta,:ca);');
            $stmt->bindParam(':qid', $question);
            $stmt->bindParam(':tq', $_POST['questionbody']);
            $stmt->bindParam(':ta', $answerValue);
            $stmt->bindParam(':ca', $i);
            $stmt->bindParam(':lid', $qid);
            $id = $db->lastInsertId('qidd');
            $stmt->execute();

            $stmt = $db->prepare('SELECT qidd FROM question WHERE qid=:qid AND lid=:lid;');
            $stmt->bindParam(':qid', $question);
            $stmt->bindParam(':lid', $qid);
            $stmt->execute();
            $result = $stmt->fetch(PDO::FETCH_ASSOC);
            $id = $result['qidd'];


            for ($j = 1; $j <= $answer; $j++) {
                $ansid = $j + $totalans;
                $stmt = $db->prepare('INSERT INTO answer (aid,qidd,qid,lid,textofanswer) values (:aid,:qidd,:qid,:lid,:ta);');
                $stmt->bindParam(':aid', $ansid);
                $stmt->bindParam(':qid', $question);
                $stmt->bindParam(':ta', $_POST[$j]);
                $stmt->bindParam(':lid', $qid);
                $stmt->bindParam(':qidd', $id);
                $idd = $db->lastInsertId('aidd');
                $stmt->execute();
            }

            $stmt = $db->prepare('UPDATE lecture SET qcounter=:qc WHERE lid= :lid;');
            $stmt->bindParam(':lid', $qid);
            $stmt->bindParam(':qc', $question);
            $stmt->execute();

            echo "<script> alert('Question created'); </script>";
            ?>
            <script>goBack(<?php echo $qid; ?>, '<?php echo $qtitle; ?>',<?php echo $qcounter; ?>,<?php echo $answer; ?>,<?php echo $totalans; ?>,<?php echo $action; ?>);</script>
            <?php
        } else {
            echo "<script>alert('You have to select a correct answer first');</script>";
            $_SESSION['usertxt'][0] = $_POST['questionbody'];
            for ($u = 1; $u <= $answer; $u++) {
                $_SESSION['usertxt'][$u] = $_POST[$u]; //echo $_SESSION['usertxt'][$u]." ";
            }
            echo "<script>window.location.href=\"editQuestion.php?var=\"+$qid+\"&var1=\"+'$qtitle'+\"&question=\"+$question+\"&answer=\"+$answer+\"&totalans=\"+$totalans+\"&action=\"+$action+\"&r=1\";</script>";
        }
    }
}

if ($action == 0) {


    //update documents
    if (isset($_POST['submit'])) {
        if (isset($_POST['radioAnswer'])) {

            $answerValue = $_POST[$_POST['radioAnswer']];
            $stmt = $db->prepare('UPDATE question SET textofquestion=:tq, textofanswer=:ta, acounter=:ac WHERE qid=:qid AND lid=:lid;');
            $stmt->bindParam(':qid', $question);
            $stmt->bindParam(':lid', $qid);
            $stmt->bindParam(':tq', $_POST['questionbody']);
            $stmt->bindParam(':ta', $answerValue);
            $stmt->bindParam(':ac', $answer);
            $stmt->execute();

            $stmt = $db->prepare('DELETE FROM answer WHERE qid =:qid AND lid=:lid;');
            $stmt->bindParam(':qid', $question);
            $stmt->bindParam(':lid', $qid);
            $stmt->execute();
            //problem me koubouthkia refresh 0
            $stmt = $db->prepare('SELECT qidd FROM question WHERE qid=:qid AND lid=:lid;');
            $stmt->bindParam(':qid', $question);
            $stmt->bindParam(':lid', $qid);
            $stmt->execute();
            $result = $stmt->fetch(PDO::FETCH_ASSOC);
            $id = $result['qidd'];

            for ($j = 1; $j <= $answer; $j++) {
                $ansid = $j + $totalans;
                $stmt = $db->prepare('INSERT INTO answer (aid,qidd,qid,lid,textofanswer) values (:aid,:qidd,:qid,:lid,:ta);');
                $stmt->bindParam(':aid', $ansid);
                $stmt->bindParam(':qid', $question);
                $stmt->bindParam(':qidd', $id);
                $stmt->bindParam(':lid', $qid);
                $stmt->bindParam(':ta', $_POST[$j]);
                $idd = $db->lastInsertId('aidd');
                $stmt->execute();
            }
            echo "<script> alert('Question updated'); </script>";
            ?>

            <script>goBack(<?php echo $qid; ?>, '<?php echo $qtitle; ?>',<?php echo $qcounter; ?>,<?php echo $answer; ?>,<?php echo $totalans; ?>,<?php echo $action; ?>);</script>
            <?php
        } else {
            echo "<script>alert('You have to select a correct answer first');</script>";
            $_SESSION['usertxt'][0] = $_POST['questionbody'];
            for ($u = 1; $u <= $answer; $u++) {
                $_SESSION['usertxt'][$u] = $_POST[$u]; //echo $_SESSION['usertxt'][$u]." ";
            }
            echo "<script>window.location.href=\"editQuestion.php?var=\"+$qid+\"&var1=\"+'$qtitle'+\"&question=\"+$question+\"&answer=\"+$answer+\"&totalans=\"+$totalans+\"&action=\"+$action+\"&r=1\";</script>";
        }
    }
}
//save user documents
if (isset($_POST['plus'])) {
    $_SESSION['usertxt'][0] = $_POST['questionbody'];
    for ($u = 1; $u <= $answer; $u++) {
        $_SESSION['usertxt'][$u] = $_POST[$u]; //echo $_SESSION['usertxt'][$u]." ";
    }
    $_SESSION['usertxt'][$u] = "Answer " . $u;
    ?>
    <script>addAnswer(<?php echo $qid; ?>, '<?php echo $qtitle; ?>',<?php echo $question; ?>,<?php echo $answer; ?>,<?php echo $totalans; ?>,<?php echo $action; ?>);</script>
    <?php
} else if (isset($_POST['minus'])) {
    $_SESSION['usertxt'][0] = $_POST['questionbody'];
    for ($u = 1; $u <= $answer; $u++) {
        $_SESSION['usertxt'][$u] = $_POST[$u]; //echo $_SESSION['usertxt'][$u]." ";
    }
    ?>
    <script>deleteAnswer(<?php echo $qid; ?>, '<?php echo $qtitle; ?>',<?php echo $question; ?>,<?php echo $answer; ?>,<?php echo $totalans; ?>,<?php echo $action; ?>);</script>
    <?php
}
?>