I have created search forms using Ransack, but I have a problem. When I leave input empty I would like form not to send these inputs, so it won’t appear in my parameters.

Right now when i leave filters empty

They anyway apear in my url params and I am affraid that when I add many more filters it would cause problems

http://localhost:3000/records?q%5Btitle_cont%5D=&commit=Search

How could I get rid of that? I understand that I am passing '' in that input.

controller:

class RecordsController < ApplicationController
  def index
    @q = Record.ransack(params[:q])
    @records = @q.result(distinct: true)
  end

form:

<%= search_form_for @q do |f| %>
  <%= f.label :title_cont %>
  <%= f.search_field :title_cont %>
  <%= f.submit %>
<% end %>