<% form_for :searches, @search, :url => searches_path, :html => {:method => :post} do |f| %>
  <%= f.error_messages %>
  <p>
    <%= f.label :keywords %><br />
    <%= f.text_field :keywords %>
  </p>
  <p><%= f.submit "Submit" %></p>
<% end %>

<% form_tag posts_path, :method => :get do |f| %>
  <%= f.text_field :query %>
<% end %>