当用户在Rails 4中使用omniauth登录时，路由到其他控制器吗？

Question

How do you route to a different controller and page when a user is signed in using Omniauth (no devise) and rails 4?

Current my code is:

root to: 'dashboards#home', :constraints => lambda{|req| !req.session[:user_id].blank?}
root to: 'visitors#home'

And I get the error:

"Invalid route name, already in use: 'root' You may have defined two routes with the same name using the :as option, or you may be overriding a route already defined by a resource with the same naming."

Answer 1

You could do it in the view:

<% if signed_in? %>
   <%= render 'dashboards/home' %>
<% else %>
   ...whatever the non-signed in person sees
<% end %>

Then you only have one root that can lead to two different pages whether the user is logged in or not.

root to: 'vistors#home'
match '/dashboard',   to: 'dashboards#home', via: 'get

Answer 2

I usually just do this in the controller. For example, root all to dashboard:

root to: 'dashboards#home'

Then in the DashboardController:

def home
  if session[:user_id].blank?
    redirect_to controller: 'visitors', action: 'home'
  end
end

I haven't found a graceful way to do conditional routing in rails, unfortunately.