invalid byte sequence in US-ASCII (Ruby 1.9 + rails 2.3.8 + mongodb + mongo_mapper)

Question

My setup is:

linux + Ruby 1.9 + rails 2.3.8 + mongodb + mongo_mapper

I followed http://railscasts.com/episodes/194-mongodb-and-mongomapper, that everything is OK

Answer 1

cd $HOME
vi .bashrc

add locale conf below:

export LANG="en_US.UTF-8"
export LC_ALL="en_US.UTF-8"
export LC_CTYPE=en_US.UTF-8

save and run: source ~/.bashrc

Everything is okay~