app/views/server_configs/new.html.haml
%h2 New server config
.row
.col-md-9
= simple_form_for(@server_config, url: url_for(controller: "server_configs", action: "create"), :html => { :class => 'form' }) do |f|
= f.input :file, label: "File name (without .cfg)"
= f.input :hidden
.col-md-offset-2
%button.btn.btn-default{:type => :submit}
Save