when i acces this way /unattended/template/$template_name/$hostgroup the <%= @host.name > is the hostgroup name
wich is logic beacuse it cannot be a particular host name
but it shouldn't give an error if the render was good
when i click on build (for a paricular host), the <= @host.name %> value should be the name of the host i'm trying to build
the point is not if the host name can be used but it shouldn't give an error

I just hit a very similar, if not the same, issue with a PXElinux template.

It appears that the Intel S5520HC boards that I have don't work with the anaconda argument:

ksdevice=bootif

and I get prompted to select the interface to use for installation. Manually editing the pxe cfg file to have the argument ksdevice=<mac> seems to work and anaconda no longer prompts for interface selection. As a work around, it would be desirable to use @host.mac in PXElinux templates. However, this seems not to work, with or without safe render set. Eg

ksdevice=<% @host.mac %>

causes this error:

Failed to generate PXELinux template: undefined method 'mac' for Safemode::Jail (NilClass)

Hi,

with safemode rendering disabled, this works for me.
Tested on the develop branch
(look at the wiki, there is a hint to strip the @host )
http://www.theforeman.org/projects/foreman/wiki/TemplateWriting

ksdevice=<%=mac %> 

Confirmed here with Foreman 4.2, though this should have been fixed with Bug #653.

Peter Bauer wrote:

Confirmed here with Foreman 4.2, though this should have been fixed with Bug #653.

If you just use <%= mac %> does it work? my feeling this was already solved via #1385

Ohad Levy wrote:

Peter Bauer wrote:

Confirmed here with Foreman 4.2, though this should have been fixed with Bug #653.

If you just use <%= mac %> does it work? my feeling this was already solved via #1385

Hi,

like stated by Florian Koch, the following works for me, but only if safemode rendering is disabled.

ksdevice=<%=mac %>

With safemode rendering enabled, i get the following error:

Failed to generate PXELinux template: undefined method 'mac' for Safemode::Jail (NilClass)