I am trying to hide the contents of the page if the user is not logged in, everything is now hidden except the nav. It doesn’t apply the css code that I used.
<?php
include 'includes/connection.php';
if(!isset($_SESSION['student_id'])){
echo '<script src="https://unpkg.com/sweetalert/dist/sweetalert.min.js"></script>';
echo '<style type="text/css">
.display-custom {
display: none;
}
nav {
display: none;
}
</style>';
echo '<script type="text/javascript">';
echo 'setTimeout(function () {
swal({
closeOnClickOutside: false,
closeOnEsc: false,
title: "Access Failed",
text: "You are not yet logged in! Redirecting to Login...",
icon: "warning",
button: false,
timer: 3000
}).then(function(result) {
window.location = "Login.php?login=notactive";
});';
echo '}, 200);</script>';
// echo "<script>alert('You are not logged in!'); location.href='Login.php';</script>";
}
else{
echo '<script type="text/javascript"> $(".display-custom").css("display", "block"); </script>';
$expire = 365*24*3600; // We choose a one year duration
setcookie(session_name(),session_id(),time()+$expire);
// echo "<script>alert('You are already Logged in!'); location.href='Home.php';</script>";
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<title>Repository Home</title>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<link rel="shortcut icon" href="files/Images/logoapp.png">
<link rel="stylesheet" href="css/style.css">
<!-- Font Awesome JS -->
<script defer src="https://use.fontawesome.com/releases/v5.0.13/js/solid.js" integrity="sha384-tzzSw1/Vo+0N5UhStP3bvwWPq+uvzCMfrN1fEFe+xBmv1C/AtVX5K0uZtmcHitFZ" crossorigin="anonymous"></script>
<script defer src="https://use.fontawesome.com/releases/v5.0.13/js/fontawesome.js" integrity="sha384-6OIrr52G08NpOFSZdxxz1xdNSndlD4vdcf/q2myIUVO0VsqaGHJsB0RaBE01VTOY" crossorigin="anonymous"></script>
<script src="https://unpkg.com/sweetalert/dist/sweetalert.min.js"></script>
<style type="text/css">
/* .swal-overlay {
background-color: white;
} */
</style>
</head>
<body>
<!-- Navbar Header -->
<nav class="navbar fixed-top navbar-expand-sm navbar-custom display-custom">
<a href="index.php" target="_blank" class="navbar-brand ml-3"><img src="#" class="img-responsive" width="35" height="35"> | Title Page </img></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarmenu" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon" role="button" ><i class="fa fa-bars" aria-hidden="true" style="font-size: 25px; margin: 0 auto;"></i></span>
</button>
<div id="navbarmenu" class="collapse navbar-collapse">
<ul class="navbar-nav justify-content-center" style="width: 100%">
<li class="nav-item active px-3">
<a href="Home.php" class="nav-link text-nowrap"><i class="fas fa-home"></i> Home</a>
</li>
<ul class="nav navbar-nav">
<li class="nav-item dropdown px-3">
<a href="repositorymanagement.php" class="nav-link text-nowrap"><i class="fas fa-laptop"></i> Research Repository </a>
</li>
</ul>
<!-- <li id="irene"class="nav-item px-3">
<a href="../admin/repositorymanagement.php" class="nav-link text-nowrap"> Repository Management </a>
</li> -->
<li id="irene"class="nav-item px-3">
<a href="requestformmanagement.php" class="nav-link text-nowrap" ><i class="fas fa-newspaper"></i> Request Form Management </a>
</li>
</ul>
<ul class="nav navbar-nav">
<li class="nav-item dropdown px-3 mr-3">
<a class="nav-link text-nowrap" href="#" id="navbarDropdownMenuLink" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<i class="fas fa-user"></i> <?php include 'helper/current_user.php'; ?>
</a>
<div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdownMenuLink">
<a class="dropdown-item" href="#"><i class="fas fa-user-cog"></i> Edit Profile</a>
<a class="dropdown-item" href="#"><i class="fas fa-user-lock"></i> Edit Password</a>
<a class="dropdown-item" href="logout_student.php"><i class="fas fa-sign-out-alt"></i> Logout</a>
</div>
</li>
</ul>
</div>
</nav>
<div class="container-sm display-custom" style="padding-top: 100px;">
<div class="container-sm text-center">
<div class="col-sm">
<span id="HeaderBanner"> EMPOWERING WHAT'S NEXT </span>
</div>
</div>
<div class="container-fluid" style="height: auto;width: 100%;">
<div class="row">
<div id="IntroductionParagraph" class="col-sm" style="margin-top: 50px;">
<p>
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</p>
<p>
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</p>
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</p>
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</p>
</div>
<div class="col-sm">
<img src="https://i.ibb.co/mbPvK7Q/women-inoff.png" class="img-responsive" style="width: 100%; height: auto;">
</div>
</div>
</div>
</div>
<!-- #START# -----------ADDING OF MODAL ------------------# -->
<!-- Large modal -->
<script type="text/javascript" src="./js/responsive_modal.js">
</script>
<!-- #END# -------------ADDING OF MODAL ------------------# -->
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.5.1.min.js" integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
</body>
</html>
as you can see in the code I have added .dipsplay-custom: none; if the user session is not set
so in every parent I added display-custom the thing is the rest is displaying none, but not the nav. as you can see in the code as well I also tried displaying nav to none.
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Answer
How about not printing the elements instead? Hiding the elements but still having them in the DOM makes it still available just by making the display: block.
Try wrapping the elements and only show them when the session is set, for example:
<?php
if(isset($_SESSION['student_id'])){
<li id="irene"class="nav-item px-3">
<a href="requestformmanagement.php" class="nav-link text-nowrap" ><i class="fas fa-newspaper"></i> Request Form Management </a>
</li>
}
?>