app/views/gollum_wikis/_edit.html.erb
<%= form_for @gollum_wiki, :url => { :controller => 'gollum_wikis', :action=> 'update', :project_id => @project } do |f| %>
<div class="box tabular">
<p>
<%= label(:gollum_wiki, :git_path) %>
<%= f.text_field :git_path %>
</p>
<p>
<%= label(:gollum_wiki, :markup_language) %>
<%= select_tag(:markup_language, options_for_select(Gollum::Page::FORMAT_NAMES.keys)) %></p>
</p>
<p>
<%= label(:gollum_wiki, :page_files_directory) %>
<%= f.text_field :directory %>
</p>
</div>
<p><%= f.submit %></p>
<% end %>