selection ???

Hi Rails Developers

I want to select template from my folder and add it like a parameter. the plugin needs parameter like a template_path. I want to supply it from selection and selection get datas from folder.

template_path = "#{get_plugin_root}/public/converter/templates/#{params[:template]}.xml"       output_path = "#{RAILS_ROOT}/public/converter/output/output.xml"

sheet_id=current_project.work_sheet.id date= current_project.from_date.to_s converter_generate(sheet_id,date, output_path, template_path) #this is method in my plugin.

I have a array to get templates @templates_array = get_templates "#{get_plugin_root}/public/converter/templates/"

till here looks no problem but when I pass to view page it gives me error.

<% templateOptions = ""             @templates_array.each do |i|               templateOptions = templateOptions + "<option value=#{i}>#{i}</option>"             end

           <%=select_tag "template", templateOptions %>

error : undefined method `each' for nil:NilClass

could you pls tell me where the error is ?

and also I tried to add new value in selection but couldnt do it. it creates 4 csv option.. <% templateOptions = ""             @templates_array.each do |i|               templateOptions = templateOptions + "<option value=#{i}>#{i}</option><option value=csv>csv</option>"             end

thanks for any help or comments