params [：person_id]返回NilClass，雖然允許值

Question

我嘗試訪問似乎被允許的params [：person_id]，因爲我注意到webtrick日誌中但該表達式返回NilClass。爲什麼？

class ClubsController < ApplicationController 
    private 
     def set_stored_with_own_address 
      logger.debug("params[:person_id]: #{params[:person_id].class}") # => NilClass 
      logger.debug("params: #{params.class}") # => ActionController::Parameters 
      @stored_with_own_address = params[:person_id].nil? 
      logger.debug("Was stored with own address: #{@stored_with_own_address}") # => true 
     end 
end 

我PARAMS哈希值是：

Parameters: {"utf8"=>"√", "authenticity_token"=>"2HnqCni+Yy2jMY0vKhUNcAreD1vdAISrLkURuTso7AM=", "club"=>{"caption"=>"xxx", "region_id"=>"1", "bdk_number"=>"4711", "website"=>"xxx", "person_id"=>"1", "address_attributes"=>{"street"=>"", "street_visibility"=>"0", "zip"=>"", "city"=>"", "zip_city_visibility"=>"0", "phone"=>"", "phone_visibility"=>"0", "mobil"=>"", "mobil_visibility"=>"0", "fax"=>"", "fax_visibility"=>"0", "mail"=>"", "mail_visibility"=>"0", "id"=>"15"}}, "commit"=>"Verein speichern", "id"=>"17"} 

Answer 1

你應該使用params[:club][:person_id]訪問它。請注意0​​位於參數對象club之內。