Prevent Rails from caching a password

I'm setting up an edit profile page. And the password is available for change on it.

The only problem is that the password_field gets prepopulated with the password, and when they just want to change their name, they must 开发者_JAVA技巧also change their password as well.

Does anyone know a common workaround to this?

---

Can I assume this is about a profile page on a web page and that you can set any attribute? I'm not a Rails programmer, but in HTML, this is all it takes (the autocomplete attribute):

<input type="password" autocomplete="off" value="">

If you have that in place, browsers will not autofill or remember the passwords.