Puppet users - Aug 2012 - apparent unwanted conversion of arrays to strings with parameterized class

I''m sure I''m doing something silly here, but I''m
struggling to pass an
array variable to a parameterized class and have it stay as an array:

# cat modules/testmodule/manifests/init.pp
class testmodule($array1) {
    file {''/tmp/testmodule'' :
        content => template(''testmodule/testmodule.erb''),
    }
}

# cat manifests/nodes/site.pp
node ''testclient'' {
    $myarray = [''aaa'',''bbb'']
    class { "testmodule":
        array1 => [$myarray],
    }
}

# cat modules/testmodule/templates/testmodule.erb
<% array1.each do |val| -%>
array1 val: <%= val %>
<% end -%>

<puppet run>

# cat /tmp/testmodule
array1 val: aaabbb

i.e. the class does not think $array1 is an array any more.  However if I 
change the node config to set the parameter as an array explicitly:

# cat manifests/nodes/site.pp
node ''testclient'' {
    class { "testmodule":
        array1 => [''aaa'',''bbb''],
    }
}

<puppet run>

# cat /tmp/testmodule
array1 val: aaa
array1 val: bbb

Its not unreasonable to try and pass an array as a variable is it?

Cheers,

Tom.

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On Fri, Aug 24, 2012 at 8:22 AM, tom s <puppetlabs@tomseeley.co.uk>
wrote:
> I''m sure I''m doing something silly here, but I''m
struggling to pass an array
> variable to a parameterized class and have it stay as an array:
>
> # cat modules/testmodule/manifests/init.pp
> class testmodule($array1) {
>     file {''/tmp/testmodule'' :
>         content =>
template(''testmodule/testmodule.erb''),
>     }
> }
>
> # cat manifests/nodes/site.pp
> node ''testclient'' {
>     $myarray = [''aaa'',''bbb'']
>     class { "testmodule":
>         array1 => [$myarray],
I don''t think you want to add [ ] around $myarray which turns it into
[[''aaa'',''bbb'']].

Nan

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