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📁 ..
📄 achievers.php(21.44 KB)
📄 achv_cat_manage.php(7.99 KB)
📄 achv_edit.php(9.58 KB)
📄 achv_list.php(8.08 KB)
📄 achv_upload.php(13.39 KB)
📄 admin-academic-calendar.php(20.41 KB)
📄 admin-public-disclosure.php(18.36 KB)
📄 admissions.php(28.76 KB)
📄 admissions_error.log(56 KB)
📁 assets
📄 banners.php(9.78 KB)
📄 branding_settings.php(5.93 KB)
📄 change_password.php(3.01 KB)
📄 class_master.php(4.32 KB)
📄 contacts.php(3.83 KB)
📄 dashboard.php(27.76 KB)
📄 downloads.php(4.91 KB)
📄 edit_faculty.php(6.85 KB)
📄 events.php(920 B)
📄 export_franchise.php(930 B)
📄 faculty.php(8.36 KB)
📄 fees_list.php(8.48 KB)
📄 fees_upload.php(6.19 KB)
📄 forgot_password.php(5.76 KB)
📄 franchise.php(7.28 KB)
📄 gallery.php(3.08 KB)
📄 grievance-update.php(1003 B)
📄 grievance-view.php(8.51 KB)
📄 grievances.php(9.55 KB)
📄 homework_add.php(5.98 KB)
📄 homework_edit.php(9.39 KB)
📄 homework_list.php(2.24 KB)
📁 img
📁 includes
📄 index.php(82 B)
📄 login.php(13.47 KB)
📄 logout.php(102 B)
📄 manage_albums.php(10.82 KB)
📄 manage_media.php(11.77 KB)
📄 manage_photos.php(6.35 KB)
📄 manage_videos.php(18.38 KB)
📄 managing-committee.php(13.64 KB)
📄 master_menu.php(5.75 KB)
📄 master_menu_debug.php(3.73 KB)
📄 new_password.php(3.9 KB)
📄 non_academic_achievers.php(21.2 KB)
📄 notice.php(15.52 KB)
📄 notice_error.log(38.45 KB)
📄 notices.php(8.24 KB)
📄 payments.php(14.96 KB)
📁 phpmailer
📄 popup.php(14.07 KB)
📄 reset_password.php(2.27 KB)
📄 section_master.php(6.59 KB)
📄 sections_by_class.php(346 B)
📄 secure_session.php(1000 B)
📄 settings.php(8.34 KB)
📄 student_photo_update.php(1.8 KB)
📄 subject_master.php(6.16 KB)
📄 submit-grievance.php(4.97 KB)
📄 testimonials.php(15.15 KB)
📄 update_status.php(1.66 KB)
📄 upi_settings.php(1.52 KB)

Editing: homework_edit.php

<?php
include 'secure_session.php';
include 'includes/auth.php';
require_once '../config.php';
include 'includes/header.php';

date_default_timezone_set('Asia/Kolkata');

$allowedExt = ['pdf','jpg','jpeg','png','gif','doc','docx','ppt','pptx','xls','xlsx','txt'];
$maxSize = 5 * 1024 * 1024; // 5 MB
$msg = ""; $type = "info";

/* ---------- 1) Validate ID & Fetch ---------- */
$id = isset($_GET['id']) ? (int)$_GET['id'] : 0;
if ($id <= 0) {
  echo '<div class="container mt-4"><div class="alert alert-danger">Invalid homework ID.</div></div>';
  include 'includes/footer.php'; exit;
}

$stmt = $conn->prepare("SELECT * FROM homework WHERE id=? AND status <> 'deleted' LIMIT 1");
$stmt->bind_param("i", $id);
$stmt->execute();
$hw = $stmt->get_result()->fetch_assoc();

if (!$hw) {
  echo '<div class="container mt-4"><div class="alert alert-danger">Homework not found.</div></div>';
  include 'includes/footer.php'; exit;
}

/* ---------- 2) Dropdown data ---------- */
$classes  = $conn->query("SELECT id, name FROM classes ORDER BY id ASC");
$subjects = $conn->query("SELECT id, name, class_id FROM subjects ORDER BY class_id, name");
$sections = $conn->query("SELECT id, name, class_id FROM sections ORDER BY class_id, name");

/* ---------- 3) Handle POST (Update) ---------- */
if ($_SERVER['REQUEST_METHOD'] === 'POST') {

$class_id   = (int)$_POST['class_id'];
  $section_id = isset($_POST['section_id']) && $_POST['section_id'] !== '' ? (int)$_POST['section_id'] : null;
  $subject_id = (int)$_POST['subject_id'];
  $title      = trim($_POST['title']);
  $desc       = trim($_POST['description']);
  $assign_dt  = $_POST['assign_date'] ?: date('Y-m-d');
  $due_dt     = !empty($_POST['due_date']) ? $_POST['due_date'] : null;
  $teacher    = trim($_POST['teacher_name']);

// For file
  $file_path = $hw['file_path']; // default: keep old
  $remove_existing = isset($_POST['remove_existing']) ? 1 : 0;

// remove old file if user asked
  if ($remove_existing && $file_path) {
      $onDisk = realpath(__DIR__ . '/../' . $file_path);
      if ($onDisk && is_file($onDisk)) { @unlink($onDisk); }
      $file_path = null;
  }

// New upload?
  if (!empty($_FILES['attachment']['name'])) {
      $ext = strtolower(pathinfo($_FILES['attachment']['name'], PATHINFO_EXTENSION));
      if (!in_array($ext, $allowedExt)) {
          $msg = "Invalid file type."; $type="danger";
      } elseif ($_FILES['attachment']['size'] > $maxSize) {
          $msg = "File too large (max 5MB)."; $type="danger";
      } elseif (is_uploaded_file($_FILES['attachment']['tmp_name'])) {
          // delete previous file if any
          if ($hw['file_path'] && !$remove_existing) {
              $old = realpath(__DIR__ . '/../' . $hw['file_path']);
              if ($old && is_file($old)) { @unlink($old); }
          }
          $dir = __DIR__ . '/../uploads/homework/';
          if (!is_dir($dir)) { @mkdir($dir, 0775, true); }
          $fname = 'hw_' . time() . '_' . bin2hex(random_bytes(4)) . '.' . $ext;
          $dest = $dir . $fname;
          if (move_uploaded_file($_FILES['attachment']['tmp_name'], $dest)) {
              $file_path = 'uploads/homework/' . $fname;
          } else {
              $msg = "Upload failed."; $type="danger";
          }
      }
  }

if (!$msg) {
      $sql = "UPDATE homework SET 
                class_id=?, section_id=?, subject_id=?, title=?, description=?, 
                assign_date=?, due_date=?, file_path=?, teacher_name=?, updated_at=NOW()
              WHERE id=?";
      $stmt = $conn->prepare($sql);
      // section_id and due_date can be NULL
      $stmt->bind_param(
        "iiissssssi",
        $class_id,
        $section_id,
        $subject_id,
        $title,
        $desc,
        $assign_dt,
        $due_dt,
        $file_path,
        $teacher,
        $id
      );
      if ($stmt->execute()) {
          $type = "success";
          $msg  = "✅ Homework updated successfully.";
          // refresh $hw for re-fill after success
          $stmt2 = $conn->prepare("SELECT * FROM homework WHERE id=?");
          $stmt2->bind_param("i", $id);
          $stmt2->execute();
          $hw = $stmt2->get_result()->fetch_assoc();
      } else {
          $type = "danger";
          $msg  = "❌ DB Error: " . $conn->error;
      }
  }
}
?>
<div class="container mt-4">
  <div class="d-flex justify-content-between align-items-center mb-2">
    <h3>Edit Homework</h3>
    <div>
      <a href="homework_list.php" class="btn btn-secondary btn-sm">← Back to List</a>
    </div>
  </div>

<?php if($msg): ?>
    <div class="alert alert-<?= htmlspecialchars($type) ?>"><?= htmlspecialchars($msg) ?></div>
  <?php endif; ?>

<form method="post" enctype="multipart/form-data">
    <div class="row g-3">
      <div class="col-md-3">
        <label class="form-label">Class</label>
        <select class="form-select" name="class_id" id="class_id" required>
          <option value="">Select</option>
          <?php mysqli_data_seek($classes, 0); while($c=$classes->fetch_assoc()): ?>
            <option value="<?= $c['id'] ?>" <?= (int)$hw['class_id']==$c['id']?'selected':'' ?>>
              <?= htmlspecialchars($c['name']) ?>
            </option>
          <?php endwhile; ?>
        </select>
      </div>

<div class="col-md-3">
        <label class="form-label">Section (optional)</label>
        <select class="form-select" name="section_id" id="section_id">
          <option value="">All</option>
          <?php mysqli_data_seek($sections, 0); while($s=$sections->fetch_assoc()): ?>
            <option data-class="<?= $s['class_id'] ?>" value="<?= $s['id'] ?>" 
              <?= (!empty($hw['section_id']) && (int)$hw['section_id']==$s['id'])?'selected':'' ?>>
              <?= htmlspecialchars($s['name']) ?>
            </option>
          <?php endwhile; ?>
        </select>
      </div>

<div class="col-md-3">
        <label class="form-label">Subject</label>
        <select class="form-select" name="subject_id" id="subject_id" required>
          <option value="">Select</option>
          <?php mysqli_data_seek($subjects, 0); while($s=$subjects->fetch_assoc()): ?>
            <option data-class="<?= $s['class_id'] ?>" value="<?= $s['id'] ?>" 
              <?= (int)$hw['subject_id']==$s['id']?'selected':'' ?>>
              <?= htmlspecialchars($s['name']) ?>
            </option>
          <?php endwhile; ?>
        </select>
      </div>

<div class="col-md-3">
        <label class="form-label">Assign Date</label>
        <input type="date" class="form-control" name="assign_date" value="<?= htmlspecialchars($hw['assign_date']) ?>" required>
      </div>

<div class="col-md-6">
        <label class="form-label">Title</label>
        <input type="text" class="form-control" name="title" maxlength="120" value="<?= htmlspecialchars($hw['title']) ?>" required>
      </div>

<div class="col-md-6">
        <label class="form-label">Due Date (optional)</label>
        <input type="date" class="form-control" name="due_date" value="<?= htmlspecialchars($hw['due_date'] ?? '') ?>">
      </div>

<div class="col-12">
        <label class="form-label">Description</label>
        <textarea class="form-control" name="description" rows="4" required><?= htmlspecialchars($hw['description']) ?></textarea>
      </div>

<div class="col-md-6">
        <label class="form-label">Attachment (optional)</label>
        <input type="file" class="form-control" name="attachment" accept=".pdf,.jpg,.jpeg,.png,.gif,.doc,.docx,.ppt,.pptx,.xls,.xlsx,.txt">
        <?php if($hw['file_path']): ?>
          <div class="form-text mt-1">
            Current: <a href="../<?= htmlspecialchars($hw['file_path']) ?>" target="_blank">View file</a>
          </div>
          <div class="form-check mt-1">
            <input class="form-check-input" type="checkbox" value="1" id="remove_existing" name="remove_existing">
            <label class="form-check-label" for="remove_existing">Remove existing file</label>
          </div>
        <?php endif; ?>
      </div>

<div class="col-md-6">
        <label class="form-label">Teacher Name (optional)</label>
        <input type="text" class="form-control" name="teacher_name" value="<?= htmlspecialchars($hw['teacher_name'] ?? '') ?>">
      </div>

<div class="col-12">
        <button class="btn btn-primary">Update</button>
        <a class="btn btn-outline-secondary" href="homework_list.php">Cancel</a>
      </div>
    </div>
  </form>
</div>

function filter(el){
    const v = cid.value;
    [...el.options].forEach(o=>{
      if(!o.dataset.class) return; // keep placeholder
      o.hidden = (o.dataset.class !== v);
    });
    // if current selected option hidden -> reset
    if (el.selectedOptions.length && el.selectedOptions[0].hidden) el.value = '';
  }

cid.addEventListener('change', function(){
    filter(section); filter(subject);
  });

// run once on page load to hide irrelevant options according to current class
  filter(section); filter(subject);
})();
</script>

<?php include 'includes/footer.php'; ?>

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Editing: homework_edit.php

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