在rails中使用paperclip时获取全局s3存储桶名称

This is probably a silly question, but is there a way I can pull out the root bucket name out of the YML s3 file I have? Other tutorials I've seen just assume that the buckets are named development/test-(whatever). I just want to pull exactly what is in the amazon 3s yml out of there, or else I'll have to hard code it...This is probably a silly question, but is there