evaluate parameters and trigger another action with its own view in rails

Looking at my last post, this is my modification:

  # POST /diagnoses  
  # POST /diagnoses.json  
  def create  
      #flash[:message] = params[:question_ids]  
     # ["1 2", "2 1", "3 2"]  
      right = []  
     result = []  
      params[:question_ids].each do |p|  
           result = p.gsub(/\s+/m, ' ').strip.split(" ")  
           if result[1] == Question.find(result[0].to_i).right.to_s then right << result[0] end  
      end  
      if right.empty?  
           r = "0"   
      else r = right.size end  
     flash[:message] = "Richtig sind: " + r.to_s #+ params[:question_ids].to_s + "result: " + result.to_s  
      session[:tmp_diagnosis_raw] = params[:question_ids]  
      session[:tmp_diagnosis_right] = right  
       redirect_to diagnosed_diagnoses_path  
   
  end  

   
  def diagnosed  
     @diagnosed_raw = session[:tmp_diagnosis_raw]  
      @diagnosed_right = session[:tmp_diagnosis_right].size.to_s  
  end  

It took me a while to figure out that I have to store data in a session variable in order to trigger another action. But now I can create a new view with a more precise view of answered questions etc.

And to get your custom action through REST:

 resources :diagnoses do  
   collection do  
    get 'diagnosed'  
    post 'create'  
    get 'index'  
   end  
  end