the adapter doesn't support UTF-8 encoding

[tihuinc]

For example, if you save Japanese characters in the database, the adapter doesn't support retrieving and display the record. We get the utf-8 encoding error:

A ActionView::Template::Error occurred in campaigns#edit:

incompatible character encodings: UTF-8 and ASCII-8BIT
activesupport (3.2.13) lib/active_support/core_ext/string/output_safety.rb:135:in `concat'