[#<Category id: 3, name: "Perl", position: 2, created_at: "2012-08-29 04:22:24", updated_at: "2012-08-29 04:22:24">, #<Category id: 4, name: "Ruby", position: 2, created_at: "2012-08-29 05:32:09", updated_at: "2012-08-29 05:38:32">] 

有没有方法能分行显示成类似这个样子，而不是全部搅在一块：

[
#<Category id: 3, name: "Perl", position: 2, created_at: "2012-08-29 04:22:24", updated_at: "2012-08-29 04:22:24">, 
#<Category id: 4, name: "Ruby", position: 2, created_at: "2012-08-29 05:32:09", updated_at: "2012-08-29 05:38:32">
]