anchor.diff:      <% end %>
       </select>
       </div>
  -  </section>
  +
        
     <%= submit_tag "Filtrar",class:"btn btn-default btn-sm",style:"width:100%" %>
   <% end %>
positive.code: <%= form_tag ads_path ,:method => :get do%>
    <section class="panel">
        <header class="panel-heading">
            Category
        </header>
        <div class="panel-body">
            <ul class="nav prod-cat">
                 <% @categories.each do |cat| %>
                    <li>
                      <i class=" fa fa-angle-right"></i>
                      <% if !params[:search].nil? %>
                          <% if params[:search].include?("cat:" + "#{cat.id}") %>
                              <%= check_box_tag "search[]","cat:#{cat.id}", "active" %>
  
negative.code:       </div>
  
      <header class="panel-heading border-header">
        Cidade
      </header>
  
      <div class="panel-body">
      <select multiple name="cities[]" class="col-xs-12 col-md-13 col-lg-13" placeholder="Procure por cidades...">
      <option value="">Selecione...</option>
      <% @districts.each do |district| %>
        <% !params[:cities].blank? ? (cities = params[:cities]) : (cities = [])%>
  