[Install Scripts] Detecting upgrades between major releases

ayu · July 21, 2011, 8:04pm

Hello,

Is there any way of detecting the difference between an installed current version of a script and the version that a user wants to install?

I know there is the compare_versions() method. Is there a way to use it in this way so that I can do a proper upgrade procedure (the script has different procedures for upgrading between minor and major releases).

Thanks for your help.

Jamie · July 23, 2011, 1:09am

You would have to implement this yourself in the script_whatever_install function … for example, you could use code like :


sub script_whatever_install
{
my ($d, $version, $opts, $files, $upgrade, $domuser, $dompass) = @_;
...
if ($upgrade) {
  if ($ver >= 2 && $upgrade->{'version'} < 2) {
    # Perform major upgrade
  } else {
    # Perform minor upgrade
  }
} else {
  # Perform new install
}

ayu · July 25, 2011, 2:06pm

Ah, thank you very much! That helps a lot.