Make your own blog
Post editing
In this chapter, we will build on our new editing functionality, but first, let's simplify the title HTML block by moving the menu into a separate file:
- templates/title.php templates/title.php
- templates/top-menu.php templates/top-menu.php
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<div class="top-menu">
<div class="menu-options">
<?php if (isLoggedIn()): ?>
<a href="edit-post.php">New post</a>
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Hello <?php echo htmlEscape(getAuthUser()) ?>.
<a href="logout.php">Log out</a>
<?php else: ?>
<a href="login.php">Log in</a>
<?php endif ?>
</div>
</div>
<a href="index.php">
<h1>Blog title</h1>
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<?php require 'top-menu.php' ?>
<a href="index.php">
<h1>Blog title</h1>
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<div class="top-menu">
<div class="menu-options">
<?php if (isLoggedIn()): ?>
<a href="edit-post.php">New post</a>
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Hello <?php echo htmlEscape(getAuthUser()) ?>.
<a href="logout.php">Log out</a>
<?php else: ?>
<a href="login.php">Log in</a>
<?php endif ?>
</div>
</div>
That change allows us to wire in the menu fragment separately, without the title, so we can use a custom title in the edit page. You'll see that we set the title to "New post" or "Edit post" depending on whether we can find a primary key in the query string.
- edit-post.php edit-post.php
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<?php require 'templates/head.php' ?>
</head>
<body>
<?php require 'templates/title.php' ?>
<?php if ($errors): ?>
<div class="error box">
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<?php require 'templates/head.php' ?>
</head>
<body>
<?php require 'templates/top-menu.php' ?>
<?php if (isset($_GET['post_id'])): ?>
<h1>Edit post</h1>
<?php else: ?>
<h1>New post</h1>
<?php endif ?>
<?php if ($errors): ?>
<div class="error box">
Let's also add in a cancel link in the edit page, to make it easier to abandon an edit:
- edit-post.php edit-post.php
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type="submit"
value="Save post"
/>
</div>
</form>
</body>
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type="submit"
value="Save post"
/>
<a href="index.php">Cancel</a>
</div>
</form>
</body>
On the home page, and for logged-in users only, I next added an edit link against each post, like so:
- index.php index.php
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<p>
<?php echo htmlEscape($row['body']) ?>
</p>
<div class="read-more">
<a
href="view-post.php?post_id=<?php echo $row['id'] ?>"
>Read more...</a>
</div>
</div>
<?php endwhile ?>
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<p>
<?php echo htmlEscape($row['body']) ?>
</p>
<div class="post-controls">
<a
href="view-post.php?post_id=<?php echo $row['id'] ?>"
>Read more...</a>
<?php if (isLoggedIn()): ?>
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<a
href="edit-post.php?post_id=<?php echo $row['id'] ?>"
>Edit</a>
<?php endif ?>
</div>
</div>
<?php endwhile ?>
You may have noticed that the class name (read-more) of the wrapping div was no
longer accurate, which is why I changed this to something more generic. As it happens, this
section doesn't have any CSS rules specifically attached to it, but it's good to have something
for future styles to hook onto).
Lastly, let's make a another nice easy change - there's no point in rendering the login page if we are already logged in. So, after the session is started, if we find we are logged in already, redirect back to the home page.
- login.php login.php
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}
session_start();
// Handle the form posting
$username = '';
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}
session_start();
// If we're already logged in, go back home
if (isLoggedIn())
{
redirectAndExit('index.php');
}
// Handle the form posting
$username = '';