vb.org Archive - Custom items in VB datastore

Without getting into the whys and wherefores I have coded a page that displays a lot of data that is pulled from the database, this works perfectly and all is good.

However, there is no need for this data to be re-queried on every page view so the obvious solution is the cache the data, when needed pull it from the cache and periodically purge and refresh the cache.

It seems like a good idea to reuse as much of the existing datastore system that already exists in vBulletin. I can store into the cache using:

Code:

build_datastore('mycustomdata', serialize($mycustomdata), 1);

However, how do I retrieve from the store?

I did consider putting it into something like $vbulletin->options but this would mean that the data would be loaded in on all pages which is unnecessary and would waste resources.

--------------- Added [DATE]1254311069[/DATE] at [TIME]1254311069[/TIME] ---------------

Problem Solved

To do this you need to give your custom datastore a name, and then pass this name to the $specialtemplates array.

Code speaks a thousand words, so...

Code:

<?php

error_reporting(E_ALL & ~E_NOTICE);

define('NO_REGISTER_GLOBALS', 1);

define('THIS_SCRIPT', 'testvbcache');



$phrasegroups = array();

$specialtemplates = array('mycustomdatastoretemplate');

$globaltemplates = array();

$actiontemplates = array();



require_once('./global.php');



if (isset($vbulletin->mycustomdatastoretemplate))

{

        //The custom datastore item is available so just echo out the current

        //datastore value.

        echo 'RETRIEVED: ' . $vbulletin->mycustomdatastoretemplate['arraykey'];

}

else

{

        //The custom datastore item is not available so create it and add to

        //the datastore

        $mycustomdata = array();

        $mycustomdata['arraykey'] = 'This is the value of array key';

        build_datastore('mycustomdatastoretemplate', serialize($mycustomdata), 1);

        

        echo 'ADDED: ' . $mycustomdata['arraykey'];

}

?>

The part in bold red is the important bit, without this the VB backend will not load in your custom datastore values.

The first time this script is run it will output:

Code:

ADDED: This is the value of array key

The second time (and all subsequent calls) it will output

Code:

RETRIEVED: This is the value of array key

X vBulletin 3.8.12 by vBS Debug Information
Page Generation 0.01080 seconds Memory Usage 1,721KB Queries Executed 10 (?)
More Information
Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (4)bbcode_code_printable (1)bbcode_php_printable (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)post_thanks_navbar_search (1)printthread (3)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
Messages: