On 13 March 2011 05:00, Mohamed Lrhazi <lrh...@gmail.com> wrote:
> I have a var defined like this:
>
> $uiso_scanners = [
> ["uiso-scanner.example.com","192.168.151.21"],
> ["uiso-scanner1.example.com","192.168.18.37"],
> ]
>
> and then in a template I have:
>
> <% if uiso_scanners -%>
> # Allow communication with UISO scanners
> <% uiso_scanners.each do |uiso_scanner| -%>
> -A RH-Firewall-1-INPUT -s <%= uiso_scanner[1] %> -j ACCEPT
> <% end -%>
> <% end -%>
>
> Instead of the IP addresses, this ends up with some weird number
> printed, 105 and 52!
This is because that nested array flattens out during the compile
phase (I think) to
$uiso_scanners = [
"uiso-scanner.example.com","192.168.151.21",
"uiso-scanner1.example.com","192.168.18.37",
]
If you try setting the above $uis_scanners, you'll get the similar result.
(Try instrumenting your .erb like:
<% if uiso_scanners -%>
# Allow communication with UISO scanners
<% uiso_scanners.each do |uiso_scanner| -%>
-A RH-Firewall-1-INPUT -s <%= p uiso_scanner; puts; uiso_scanner[1]
%> -j ACCEPT
<% end -%>
<% end -%>
and observe)
> If I change the var definition to be:
>
> $uiso_scanner1=["uiso-scanner.example.com","192.168.151.21"]
> $uiso_scanner2=["uiso-scanner1.example.com","192.168.18.37"]
> $uiso_scanners = [$uiso_scanner1,$uiso_scanner2]
>
> The template works as expected.
>
> What's the problem with the first style?
I'm not sure why the above form doesn't flatten out like in the first case.
You could try a hash like this if you prefer the visual appeal:
$uiso_scanners = {
"uiso-scanner.example.com" => "192.168.151.21",
"uiso-scanner1.example.com" => "192.168.18.37",
}
<% if uiso_scanners -%>
# Allow communication with UISO scanners
<% uiso_scanners.keys.each do |host| -%>
-A RH-Firewall-1-INPUT -s <%= uiso_scanners[host] %> -j ACCEPT
<% end -%>
<% end -%>
-Naresh V.
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