Fetch data from date range - ruby-on-rails-3

Question

I want to see my room_requests which have duration included in my date range from form. Here's what I've done:
controller for this view:
def not_confirmed_slots
if params[:search]
#slots = RoomRequest.find(:all, :conditions => ['date >= ? and date =< ?', params[:start_date].strftime("%Y-%m-%d"), params[:end_date].strftime("%Y-%m-%d")])
if #projects.size.zero?
flash[:notice] = "No result found"
#slots = RoomRequest.find(:all)
end
else
#slots = RoomRequest.all
end
end
and my form from view:
%h1= t('headers.reports.notConfirmedSlots')
= form_tag not_confirmed_slots_reports_path, method: 'get' do
%p
= text_field_tag :start_date, nil, :class => "datepicker", :placeholder => t('placeholders.reports.startDate')
%p
= text_field_tag :end_date, nil, :class=>"datepicker", :placeholder => t('placeholders.reports.endDate')
.clear
.action_bar
= submit_tag t('buttons.reports.generate'), {class: "button blue"}
But every time I submit form with dates it lists me all room_requests from db - any tips?
Oh, and here is the partial (it's on the same view where is search form):
%table
- #slots.each do |s|
%tr
%td
= s.bookers_name
%td
= s.request_type