page_edit.php

<?php include('utils/login_check.php'); ?>
<?php include('utils/header.php'); ?>
<link rel="stylesheet" href="smn/summernote-bs4.css">
<script src="smn/summernote-bs4.js"></script>
<?php

	include('../inc/functions.php');
	check_pages('../config/pages.php');
	include('../config/pages.php');

	$page_slug = (isset($_GET['page'])) ? trim($_GET['page']) : '';

	$page = "../pages/$page_slug.php";
	if (!file_exists($page) || ($page_slug == '') || (!validate_slug($page_slug))) {
		header('Location: pages.php');
	}

	if (isset($_POST['page_slug'])) {

		$duplicate = false;
		$page_slug_update = strtolower( trim($_POST['page_slug_update']));
		$page_slug = strtolower( trim($_POST['page_slug']) );
		$content = $_POST['content'];
		$label = $_POST['label'];
		if ($page_slug != $page_slug_update) {
			// to update page slug -- find if duplicate exists
			foreach($pages as $p) {
				if ($p['page_slug'] == $page_slug_update) {
					$duplicate = true;
					break;
				}
			}

		}

		if (
			(!$duplicate && validate_slug($page_slug_update))
			|| ($page_slug == 'home')
		   ) {
			// duplicate does not exists -- can update slug
			foreach($pages as $k => $p) {
				if ($p['page_slug'] == $page_slug) {

					// cannot update slug home
					if ($page_slug == 'home') {
						$page_slug_update = 'home';
					}

					$pages[$k]['page_slug'] = $page_slug_update;
					$pages[$k]['label'] = $label;

					file_put_contents('../config/pages.php', '<?php $pages = '.var_export($pages, true).';?>');

					break;
				}
			}

			unlink("../pages/$page_slug.php");
			file_put_contents("../pages/$page_slug_update.php", '<?php $content = <<<EOD'."\r\n$content\r\nEOD;\r\n?>");

			header('Location: page_edit.php?page='.$page_slug_update.'&success=1');

		}

    $error = array();
    if ($duplicate) { $error[] = 'Slug already exists. Please pick another.'; }
    if (!validate_slug($page_slug_update)) { $error[] = 'Slug is invalid. Minimum of four characters, use only alphanumerics, dashes or underscores.'; }

	}

	foreach($pages as $p) {
		if ($p['page_slug'] == $page_slug) {
			$this_page = $p;
			break;
		}
	}
	include($page);

?>
    <main role="main" class="container">
		<a href="pages.php" class="btn btn-sm btn-primary">&larr; Back to Pages</a>
       <form action="page_edit.php?page=<?php echo $page_slug?>" id="content_form" method="post">
        <h1>Edit Page : <?php echo $page_slug; ?> <button type="submit" class="btn btn-primary float-right">Save</button></h1>

        <hr>

        <?php if (isset($_GET['success']) && ($_GET['success'] == '1')) { ?>
        <p class="alert alert-success">Update successful</p>
        <?php } ?>

        <?php if ($error && is_array($error)) {
         foreach($error as $e) {
         ?>
        <p class="alert alert-danger"><?php echo $e;?></p>
        <?php } } ?>

        <div class="row">
        	<div class="col-sm-6">

  <div class="form-group">
    <label for="exampleInputPassword1">Label</label>
    <input type="text" name="label" class="form-control" id="label" placeholder="Page label" value="<?php echo $this_page['label'];?>">
  </div>

        	</div>

        	<div class="col-sm-6">

  <div class="form-group">
    <label for="exampleInputPassword1">Page Slug</label>
    <input type="hidden" name="page_slug" class="form-control" id="page_slug" placeholder="Page slug" value="<?php echo $this_page['page_slug'];?>">
    <input type="text" name="page_slug_update" class="form-control" id="page_slug_update" placeholder="Page slug" value="<?php echo $this_page['page_slug'];?>" <?php echo ($this_page['page_slug'] == 'home') ? ' readonly disabled' : ''; ?>>
  </div>

        	</div>

        </div>


        <input type="hidden" name="content" id="content" value="">
    <div id="summernote"></div>
    <p>&nbsp;</p>

    </form>
    <script>
      $('#summernote').summernote({
        tabsize: 2,
        height: 400
      });

// Jadi $content sebagai Javascript string markupStr
// -- buang newline, jadikan string 1 baris
// -- kena addslashes sebab kena escape ' dan " untuk jadikan string
var markupStr = '<?php echo trim(preg_replace('/\s\s+/', ' ', addslashes($content)));?>';
		
$('#summernote').summernote('code', markupStr);		
		
		$(document).ready(function(){
			$('#content_form').on('submit', function(){
				$('#content').val( $('#summernote').summernote('code') );
				return true;
			})
		});
    </script>

    </main><!-- /.container -->
<?php include('utils/footer.php'); ?>