Question

There's a problem using NatSkin / NatSKinPlugin with older TWiki versions, eg. the TWikiVMDebianStable.

When NatSkin is activated via
* Set SKIN = nat

NatSkinPlugin produces the following error:

Can't call method "loginUrl" on an undefined value 

Environment

-- CarloSchulz - 25 Mar 2008

Answer

to solve this issue edit twiki\lib\TWiki\Plugins\NatSkinPlugin.pm and find the following code (around line 1150):

###############################################################################
# returns the login url
sub renderLoginUrl {
  my $session = $TWiki::Plugins::SESSION;
  return '' unless $session;

  my $loginManager = $session->{loginManager} || $session->{users}->{loginManager};
  return $loginManager->loginUrl();
}

Now, you need to replace the code from above with the following patch:

###############################################################################
 # returns the login url
 sub renderLoginUrl {
   my $session = $TWiki::Plugins::SESSION;
   my $loginManager = $session->{loginManager} || # TWiki-4.2
     $session->{users}->{loginManager} || # TWiki-4.???
     $session->{client}; # TWiki-4.0
   return $loginManager->loginUrl();
 }

Refresh your browser and your TWiki should be able to use NatSkin

-- CarloSchulz - 25 Mar 2008

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