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In the other post, I come up with a trick to call PreItem event to allow other installed plugins to process any skinvar might be in the data. There is still one problem that internal skinvar like <%image%>, <%popup%>, and etc are not resolve.

Here's the trick to do that, in a one stone for 2 birds fashion. The trick used PHP output buffer control function redirect the output mean for the broswer and capture it into a variable for our use.

example: getting contents of a post:

...
... (get blogid)
...
$b =& $manager->getBlog($blogid);
...
...
$extraQuery = ' and inumber=' . intval($itemid);
$template = 'default';

ob_start();
$b->readLogAmount($tempalte, 1, $extraQuery, 0, 1, 0);
$outbuf = ob_get_contents();
ob_end_clean();

Here's my note on how to add Ajax function to a Nucleus plugin. Ajax provides interaction to your web application (in our case, a blog) without reloading the whole web page. I think it is a very good mechanism to refresh just a small portions of your blog without clicking the reload button. NP_MiniForum is a good example.

1. Create function to insert XMLHttpRequest javascript
2. Setup doSkinvar() with function to insert javascript and <div> block
3. Add action to receive remote HTTP request

more...