Comparison of foo.is_a?(Array) and [foo].flatten in ERB templates.

always_array.erb

<% if not nocache.empty? -%>

    # Disable caching for certain locations.
    if (req.url ~ "<%= [nocache].flatten.join('" ||
        req.url ~ "') -%>") {
        return(pass);
    }
<% end -%>

is_a_array.erb

<% if not nocache.empty? -%>

    # Disable caching for certain locations.
<% if nocache.is_a?(Array) -%>
    if (req.url ~ "<%= nocache.join('" ||
        req.url ~ "') -%>") {
<% else -%>
    if (req.url ~ "<%= nocache -%> ") {
<% end -%>
        return(pass);
    }
<% end -%>

zanother_example.erb

forwarders { <%= cobbler_dns_forwarders.is_a?(Array) ? cobbler_dns_forwarders.join("; ") : cobbler_dns_forwarders -%>; };

forwarders { <%= [cobbler_dns_forwarders].flatten.join("; ") -%>; };