Ruby on Rails - 來自Paypal的params：utf-8中的無效字節序列

Question

我正在按照本教程將Paypal集成到我的Rails應用程序中，但我遇到了問題。 Paypal通過POST返回我的網址，但我一直有錯誤：

ArgumentError (invalid byte sequence in UTF-8):
  app/controllers/purchases_controller.rb:24:in `hook'

這是我的鈎子：

protect_from_forgery except: [:hook]
    def hook
        params.permit! # Permit all Paypal input params
        status = params[:payment_status]
        if status == "Completed"
          @purchase = Purchase.find params[:invoice]
          Line 24 --> @purchase.update_attributes notification_params: params, status: status, transaction_id: params[:txn_id], date: Time.now
        end
        render nothing: true
    end

我嘗試了多種解決方案，例如notification_params: params.encoding(xxx)或force_encode(xxx)但沒有成功。 我不能使用encode或其他因為params是ActiveRecord::Parameters ，而不是String ...

問題似乎是，在Paypal我的名字是"Stéphane"但它返回"St\\xE9phane" 。

這是服務器的完整日志：

Started POST "/hook" for 127.0.0.1 at 2014-10-26 11:59:51 +0100
Processing by PurchasesController#hook as HTML
  Parameters: {"mc_gross"=>"1.00", "invoice"=>"19", "protection_eligibility"=>"Eligible", "address_status"=>"unconfirmed", "payer_id"=>"FSXBUQDGG6KWN", "tax"=>"0.00", "address_street"=>"Av. de la Pelouse, 87648672 Mayet", "payment_date"=>"03:57:09 Oct 26, 2014 PDT", "payment_status"=>"Completed", "charset"=>"windows-1252", "address_zip"=>"75002", "first_name"=>"St\xE9phane", "mc_fee"=>"0.34", "address_country_code"=>"FR", "address_name"=>"St\xE9phane Xxxxx", "notify_version"=>"3.8", "custom"=>"", "payer_status"=>"verified", "business"=>"stephanexxxxx@gmail.com", "address_country"=>"France", "address_city"=>"Paris", "quantity"=>"1", "verify_sign"=>"AOLXbVgQrAtqa0Lllz6erhuaVkd-ADHLMH5k6uuEypyAZ7WCQUuOpfxY", "payer_email"=>"xxxxxxx@outlook.com", "txn_id"=>"5SD166511T176754U", "payment_type"=>"instant", "last_name"=>"Xxxxx", "address_state"=>"Alsace", "receiver_email"=>"stephanexxxxxxx@gmail.com", "payment_fee"=>"0.34", "receiver_id"=>"ZNER97N82WKY2", "txn_type"=>"web_accept", "item_name"=>"XXXX", "mc_currency"=>"USD", "item_number"=>"1", "residence_country"=>"FR", "test_ipn"=>"1", "handling_amount"=>"0.00", "transaction_subject"=>"", "payment_gross"=>"1.00", "shipping"=>"0.00", "ipn_track_id"=>"d4e0d603abd89"}
  User Load (0.4ms)  SELECT  "users".* FROM "users"  WHERE "users"."remember_token" = 'da39a3ee5e6b4b0d3255bfef95601890afd80709' LIMIT 1
  Purchase Load (0.2ms)  SELECT  "purchases".* FROM "purchases"  WHERE "purchases"."id" = ?  ORDER BY created_at DESC LIMIT 1  [["id", 19]]
   (0.1ms)  begin transaction
   (0.1ms)  rollback transaction
Completed 500 Internal Server Error in 11ms

ArgumentError (invalid byte sequence in UTF-8):
  app/controllers/purchases_controller.rb:24:in `hook'

謝謝

Answer 1

經過一些更深入的搜索后，我找到了正確的解決方案： https ： //stackoverflow.com/a/13504253/1805275

Answer 2

經過多次嘗試沒有任何成功，我決定繞過這個問題。 由於數據庫字段是一個文本列，我所做的是創建一個包含所有參數的字符串。 之后，我能夠將我的String存儲到我的文本字段數據庫列中。

protect_from_forgery except: [:hook]
def hook
  params.permit! # Permit all Paypal input params
  status = params[:payment_status]
  if status == "Completed"

    @purchase = Purchase.find params[:invoice]
    parameters = String.new
    params.each do |key, value|
      parameters += key + " = " + value + " | "
    end

    @purchase.update_attributes notification_params: parameters, status: status, transaction_id: params[:txn_id], date: Time.now
  end

  render nothing: true
end