问在控制器之间传递参数设计Ruby on Rails

EN

    def after_sign_in_path_for(resource_or_scope)
#       user_path(resource)
        new_booking_path(course_id: 6)
    end

<%= link_to "BOOK NOW", new_user_registration_path(course_id: @course.id),  class: "ice-btn light-btn dark-btn" %>

<div class="row no-gutters">
<div class="col-md-6 offset-md-3 forms card">
<div class="form-header">
<h2>In order to book a course we just need some details from you so that you can login at a later stage to view the courses you have enrolled on.</h2>
  </div>

  <div class="form-inner">
<%= form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %>
  <%= render 'shared/devisemessage' %>

   <div class="field">
    <%= f.label "First Name" %>
    <%= f.text_field :fname %>
  </div><br />

   <div class="field">
    <%= f.label "Surname" %>
    <%= f.text_field :lname %>
  </div><br />

  <div class="field">
    <%= f.label :email %>
    <%= f.email_field :email, autofocus: true %>
  </div><br />

  <div class="field">
    <%= f.label :password %>
    <% if @minimum_password_length %>
    <em>(<%= @minimum_password_length %> characters minimum)</em>
    <% end %>
    <%= f.password_field :password, autocomplete: "off" %>
  </div><br />

  <div class="field">
    <%= f.label :password_confirmation %><br />
    <%= f.password_field :password_confirmation, autocomplete: "off" %>
  </div><br />

  <div class="actions">
    <%= f.button "Proceed to Booking page", class: "ice-btn light-btn dark-btn" %>
  </div>
<% end %>

<%= render "devise/shared/links" %>
</div>
</div>
</div>