ref: master
app/views/themes/private_edit.html.erb
<%= _('Edit theme stylesheet') %>
<% form_for @theme, :url => {:controller => :themes, :action => :private_edit, :id => @theme.id} do |f| %><%= f.label :style, _('File %{file}') % {:file => @theme.stylesheet_file} %>
<%= f.text_area :style %><%= f.submit _('Save') %><% end %>