Hi,

i want to use the upgrade function to add some new configs or buttons.
a second upgrade with the same buttons or configs will leed to mysql dup primary key error.

as i don't know from which version someone is updating i need to know if the configvar, button or table all ready exists. Is there a way to get this info?

http://www.wowroster.net/MediaWiki/AddonSDK#AddOn_Install_Class_Methods

upgrade($oldversion)

Here you can add all queries for an upgrade.

$oldversion, the version you are upgrading from.

Return true on success, false on failure.

Using version_compare() you can write blocks to upgrade from certain versions with the oldest upgrade first, then the next blocks can catch older versions and upgrade them incrementally

Code: Select all

if( version_compare('2.0.6.2', $oldversion,'>') == true )
{
    // Some stuff
}

if( version_compare('2.0.6.4', $oldversion,'>') == true )
{
    // Some more stuff
}

if( version_compare('3.0.0.0', $oldversion,'>') == true )
{
    // Again with the stuff
} 

So with this we can upgrade versions 2.0.0.0 all the way up to 3.0.0.0

Also, do not worry about trying to upgrade your version number in the upgrade block, change your installer class variables to update ti
$version, $icon, $fullname, $description, $credits will all be updated to whatever you have them during the upgrade

thx for info