Re-LogIn";
} else if (isset($_REQUEST['logout'])) {
/* * ************************ Step 2 - Case 1 ************************ */
//Log out and redirect login page
unset($_SESSION['tcname']);
header('Location: index.php');
} else if (isset($_REQUEST['dashboard'])) {
/* * ************************ Step 2 - Case 2 ************************ */
//redirect to dashboard
header('Location: tcwelcome.php');
} else if (isset($_REQUEST['delete'])) {
/* * ************************ Step 2 - Case 3 ************************ */
//deleting the selected Subjects
unset($_REQUEST['delete']);
$hasvar = false;
foreach ($_REQUEST as $variable) {
if (is_numeric($variable)) { //it is because, some session values are also passed with request
$hasvar = true;
if (!@executeQuery("delete from subject where subid=$variable and tcid=" . $_SESSION['tcid'] . ";")) {
if (mysql_errno () == 1451) //Children are dependent value
$_GLOBALS['message'] = "Too Prevent accidental deletions, system will not allow propagated deletions. Help: If you still want to delete this subject, then first delete the tests that are conducted/dependent on this subject.";
else
$_GLOBALS['message'] = mysql_errno();
}
}
}
if (!isset($_GLOBALS['message']) && $hasvar == true)
$_GLOBALS['message'] = "Selected Subject/s are successfully Deleted";
else if (!$hasvar) {
$_GLOBALS['message'] = "First Select the subject/s to be Deleted.";
}
} else if (isset($_REQUEST['savem'])) {
/* * ************************ Step 2 - Case 4 ************************ */
//updating the modified values
if (empty($_REQUEST['subname']) || empty($_REQUEST['subdesc'])) {
$_GLOBALS['message'] = "Some of the required Fields are Empty.Therefore Nothing is Updated";
} else {
$query = "update subject set subname='" . htmlspecialchars($_REQUEST['subname'], ENT_QUOTES) . "', subdesc='" . htmlspecialchars($_REQUEST['subdesc'], ENT_QUOTES) . "'where subid=" . $_REQUEST['subject'] . " and tcid=" . $_SESSION['tcid'] . ";";
if (!@executeQuery($query))
$_GLOBALS['message'] = mysql_error();
else
$_GLOBALS['message'] = "Subject Information is Successfully Updated.";
}
closedb();
}
else if (isset($_REQUEST['savea'])) {
/* * ************************ Step 2 - Case 5 ************************ */
//Add the new Subject information in the database
$result = executeQuery("select max(subid) as sub from subject");
$r = mysql_fetch_array($result);
if (is_null($r['sub']))
$newstd = 1;
else
$newstd=$r['sub'] + 1;
$result = executeQuery("select subname as sub from subject where subname='" . htmlspecialchars($_REQUEST['subname'], ENT_QUOTES) . "' and tcid=" . $_SESSION['tcid'] . ";");
// $_GLOBALS['message']=$newstd;
if (empty($_REQUEST['subname']) || empty($_REQUEST['subdesc'])) {
$_GLOBALS['message'] = "Some of the required Fields are Empty";
} else if (mysql_num_rows($result) > 0) {
$_GLOBALS['message'] = "Sorry Subject Already Exists.";
} else {
$query = "insert into subject values($newstd,'" . htmlspecialchars($_REQUEST['subname'], ENT_QUOTES) . "','" . htmlspecialchars($_REQUEST['subdesc'], ENT_QUOTES) . "'," . $_SESSION['tcid'] . ")";
if (!@executeQuery($query)) {
if (mysql_errno () == 1062) //duplicate value
$_GLOBALS['message'] = "Given Subject Name voilates some constraints, please try with some other name.";
else
$_GLOBALS['message'] = mysql_error ();
}
else
$_GLOBALS['message'] = "Successfully New Subject is Created.";
}
closedb();
}
?>
OES-Manage Subjects
" . $_GLOBALS['message'] . "";
}
?>
