Braintree::ConfigurationError (需要设置Braintree：：Configuration.merchant_id)

Question

只有当我在生产中运行我的应用程序(Heroku)时，我才会收到这个错误。在本地运行ok，我已经测试了一些事务，它可以工作。我使用Braintree沙箱帐户

具体来说，我得到了以下错误：

2015-05-18T19:07:53.077006+00:00 app[web.1]: Started GET "/transactions/new" for 160.9.0.125 at 2015-05-18 19:07:53 +0000
2015-05-18T19:07:53.093436+00:00 app[web.1]:   User Load (1.9ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1  ORDER BY "users"."id" ASC LIMIT 1  [["id", 1]]
2015-05-18T19:07:53.095900+00:00 app[web.1]: Braintree::ConfigurationError (Braintree::Configuration.merchant_id needs to be set):
2015-05-18T19:07:53.095898+00:00 app[web.1]: 
2015-05-18T19:07:53.095902+00:00 app[web.1]:   app/controllers/transactions_controller.rb:54:in `generate_new_client_token'
2015-05-18T19:07:53.095903+00:00 app[web.1]:   app/controllers/transactions_controller.rb:9:in `new'
2015-05-18T19:07:53.095905+00:00 app[web.1]: 
2015-05-18T19:07:53.095906+00:00 app[web.1]: 
2015-05-18T19:07:53.089739+00:00 app[web.1]: Processing by TransactionsController#new as HTML
2015-05-18T19:07:53.094330+00:00 app[web.1]: Completed 500 Internal Server Error in 4ms

所以我的问题是，我是否可以在生产中使用braintree沙箱帐户，还是需要切换到braintree的生产帐户？沙箱会导致错误吗？

config/initializers/braintree.rb

 Braintree::Configuration.environment = :sandbox
  Braintree::Configuration.logger = Logger.new('log/braintree.log')
  Braintree::Configuration.merchant_id = ENV['BRAINTREE_MERCHANT_ID']
  Braintree::Configuration.public_key = ENV['BRAINTREE_PUBLIC_KEY']
  Braintree::Configuration.private_key = ENV['BRAINTREE_PRIVATE_KEY']

config/application.yml

# Braintree configuration keys
  BRAINTREE_MERCHANT_ID: 'XXXXXXXXXXXX'
  BRAINTREE_PUBLIC_KEY: 'XXXXXXXXXXXXXX'
  BRAINTREE_PRIVATE_KEY: 'XXXXXXXXXXXXXXXXXXX'

Answer 1

错误发生在我正在使用的Figaro，它会自动使用ENV和application.yml。我在我的控制台上运行了"rake figaro:heroku式港口-8486“，一切正常。我不知道我需要这么做，因为当我推我的应用程序时，所有的宝石都安装在heroku服务器上-