dbconfig = YAML::load(File.open('database.yml'))
ActiveRecord::Base.establish_connection(dbconfig["development"])
class Clcar < ActiveRecord::Base
 ....
end

解决方法@H_404_15@

我将在后台进程开始时设置一次连接.一旦建立连接一次,所有的模型将正常工作.

您的连接建立代码将如下所示：

@environment = ENV['RACK_ENV'] || 'development'
@dbconfig = YAML.load(File.read('config/database.yml'))
ActiveRecord::Base.establish_connection @dbconfig[@environment]