form_tag与当前轨道具有相同的参数

Question

如何创建一个具有相同当前参数但另外一个参数的form_tag？

<%= form_tag(params.merge( :controller => "integrations", :action => "show" ), method: :get) do %>
      <%= text_field_tag :params, params[:q] %>
      <%= submit_tag "Search", class: "btn btn-default"%>
 <% end %>

我的网址如下：

http://localhost:3000/integrations/64?utf8=%E2%9C%93&q%5Bbio_or_topics_or_title_or_company_cont_any%5D=mcmaster&q%5Btitle_cont%5D=&q%5Bcompany_cont%5D=&q%5Blocation_cont_any%5D=&sort_by=twitter_followers&q%5Bfacebook_username_not_eq%5D=&q%5Btwitter_username_not_eq%5D=&q%5Blinkedin_username_not_eq%5D=&q%5Blocation_not_eq%5D=&commit=Search

谢谢！