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courses.php
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<?php
require_once('include/top.php');
if (!isset($_SESSION['username'])) {
header('Location: login.php');
}
elseif (isset($_SESSION['username']) && $_SESSION['role'] =='student'){
header('Location: home.php');
}
?>
<?php require_once('include/config.php'); ?>
<?php require_once('server.php'); ?>
<?php
if (isset($_GET['edit'])) {
$edit_id = $_GET['edit'];
}
if ($_GET['submit_course']) {
$sql = "INSERT INTO registration.courses (course_name) VALUES ('" . $_GET['course_name'] . "')";
if ($db->query($sql) === TRUE) {
}
else{
echo "Error: " . $sql . "<br>" . $db->error;
}
}
# Delete Course functionality
if (isset($_GET['delete'])) {
# Get the id of the course to be deleted
$delete_id = $_GET['delete'];
# Delete query to delete the course
$delete_query = "DELETE FROM `registration`.`courses` WHERE `course_id`= $delete_id;";
if (mysqli_query($db,$delete_query)) {
$msg = "Course has been deleted";
}
else{
$error = "Course has not been deleted";
}
}
if (isset($_POST['update'])) {
$course_name = mysqli_real_escape_string($db,strtolower($_POST['course_name']));
if (empty($course_name)) {
$update_error = "Please add course name";
}
else{
$check_query = "SELECT * FROM `courses` WHERE `course_name` = '$course_name'";
$check_run = mysqli_query($db,$check_query);
if (mysqli_num_rows($check_run) > 0) {
$update_error = "Course name already exits";
}
else{
$update_query = "UPDATE `courses` SET `course_name`='$course_name' WHERE `course_id`='$edit_id'";
if (mysqli_query($db,$update_query)) {
$update_msg = "Course name updated";
}
else{
$update_error = "Failed to update Course Name";
}
}
}
}
?>
</head>
<body>
<div id="wrapper">
<?php require_once('include/header.php'); ?>
<div class="container-fluid body-section">
<div class="row">
<div class="col-md-3">
<?php require_once('include/left-sidebar.php'); ?>
</div>
<div class="col-md-9">
<h1><i class="fa fa-book" aria-hidden="true"></i> Courses <small>Different Courses</small></h1><hr>
<ol class="breadcrumb">
<li><a href="home.php"><i class="fa fa-tachometer"></i> Dashboard</a></li>
<li class="active"><i class="fa fa-folder-open"></i> Courses</li>
</ol>
<div class="row">
<div class="col-md-6">
<form action="">
<div class="form-group">
<label for="course">Course Name:</label>
<input type="text" name="course_name" placeholder="Course Name" class="form-control">
</div>
<input type="submit" value="Add New Course" name="submit_course" class="btn btn-primary">
</form>
<?php
if (isset($_GET['edit'])) {
$edit_check_query = "SELECT * FROM courses WHERE course_id = $edit_id";
$edit_check_run = mysqli_query($db,$edit_check_query);
if (mysqli_num_rows($edit_check_run) > 0 ) {
$edit_row = mysqli_fetch_array($edit_check_run);
$update_course = $edit_row['course_name'];
?>
<hr>
<form action="" method="post">
<div class="form-group">
<label for="course">Update Course Name:</label>
<?php
if (isset($update_msg)) {
echo "<span class='pull-right' style='color:green;'>$update_msg</span>";
}
elseif (isset($update_error)) {
echo "<span class='pull-right' style='color:red;'>$update_error</span>";
}
?>
<input type="text" value="<?php echo $update_course;?>" name="course_name" placeholder="Course Name" class="form-control">
</div>
<input type="submit" name="update" value="Update Course" class="btn btn-primary">
</form>
<?php
}
}
?>
</div>
<!-- Displaying message for the admin if the course is deleted or not-->
<?php
if (isset($error)) {
echo "<span style='color:red;' class='pull-right'>$error</span>";
}
elseif (isset($msg)) {
echo "<span style='color:green;' class='pull-right'>$msg</span>";
}
?>
<div class="col-md-6">
<?php
$query = "SELECT * FROM courses";
$run = mysqli_query($db,$query);
if (mysqli_num_rows($run) > 0) {
?>
<table class="table table-hover table-bordered table-striped">
<thead>
<tr>
<th>Sr #</th>
<th>Course Name</th>
<th>Edit</th>
<th>Delete</th>
</tr>
</thead>
<tbody>
<?php
while ($row = mysqli_fetch_array($run)) {
$id = $row['course_id'];
$course_name = $row['course_name'];
?>
<tr>
<td><?php echo $id;?></td>
<td><?php echo ucfirst($course_name);?></td>
<td><a href="courses.php?edit=<?php echo $id;?>"><i class="fa fa-pencil"></i></a></td>
<td><a href="courses.php?delete=<?php echo $id;?>"><i class="fa fa-times"></i></a></td>
</tr>
<?php } ?>
</tbody>
</table>
<?php
}
else{
echo "<center><h2> No Courses Avaliable </h2></center>";
}
?>
</div>
</div>
</div>
</div>
</div>
<?php require_once('include/footer.php'); ?>