Say I had some CSS or JavaScript techniques/effects I wanted to show in a blog post. Obviously it would have been uncomfortable for me to actually include the thing in the post (CSS needs to be in the head, JavaScript may conflict with other JavaScript, etc), so the best option would have been to just link to the file demonstrating the effect. Using inFrame the reader doesn’t have to go away from the blog post to view demo files… just add a class of inframe to each of these links. In the second Official jQuery Podcast Ralph Whitbeck, Elijah Manor and their guest Richard D. Worth go through what inFrame is and when/why it’s useful:
In this tutorial I’ll walk you through the steps involved in building a databaseless PHP admin section for Smooth Gallery. When done, without much effort you should be able to adapt the code to fit any similar JavaScript image gallery(/slider/switcher/swapper… whatever). So let’s take a look at it:
As mentioned on the manager page, the password is “demo” and you don’t have sweat about removing/adding/reordering images—the manager in the demo resets the file to an initial input each time a user logs in. For faster testing: right click some photo from the internet, select copy image location and paste it in the Add New Item/Image location field (that’s the only required field). Then press Add. Then in the Edit Items part copy and paste image locations from one item to another and then update it.
You will want to download the gallery + manager before continuing. After you do, open up manager.php and follow along. Only the more important parts ware discussed below, the rest is commented in the file.
So how come no databases?
It’s an image gallery, it’s not gonna have thousands of entries. There’s not much justification in creating a database for 5-20 items. We’ll keep it all in the HTML. And this will give us a chance to work with a really neat tool: PHP Simple HTML DOM Parser. This HTML parser written in PHP5+ is going to save us a lot of work. And I think this won’t be the last you hear of it here on Vile Works.
1. The logic behind it, in plain English
We’re going to have a simple log in/log out functionality, we don’t want anyone who knows the manager’s URI to be able edit our gallery. After the log in, two main options will be available: add new item and edit existing items. …And a log out link.
if logged in
if received 'add item'
add the item;
display 'add item' form;
if received 'update items'
update all the items;
display 'update items' form;
display 'log out' link;
else
display 'log in' form;
The conditioned actions “if received ‘add item’ -> add the item” and “if received ‘update items’ -> update the items” are placed in the code before their forms so that they will display a success or error message in the page just above the form that was submitted. The “add new item” functionality will add a new item at the beginning of the gallery: the image along with its title, description and a link to another page. The “update items” will allow us to:
change the items’ titles, descriptions, images and the URL the images link to
