错误:不兼容的字符编码:UTF-8和ASCII-8BIT

当视图在数据库中发现一些字符，如ñ，á，é等时，我得到了错误incompatible character encodings: UTF-8 and ASCII-8BIT.

I got the error incompatible character encodings: UTF-8 and ASCII-8BIT, when the view found in the database some characters like: ñ, á, é, etc.

我的环境是:

• 路轨:3.2.5
• Ruby:1.9.4p194
• 数据库:Oracle 10g(10.2.0.1.0)

我可以使用Toad将这些字符保存在数据库中.

I can save this characters in the database, using Toad.

我试图在我的观点的第一行中写这个:

I tried to write this, in the first line of my view:

<% # encoding: utf-8 %>

在enviroment.erb

Encoding.default_external = Encoding::UTF_8
Encoding.default_internal = Encoding::UTF_8

但是没有什么可以解决的.

But nothing fixed this.

请，有人可以提供一些建议来解决此问题.

Please, can someone give some adviced to fixed this.

谢谢.