Make PostgreSQL use UTF-8 encoding instead of ASCII.

database.yml

# Or set it to template0 in Rails (ActiveRecord)

production:
  template: template0

PostgreSQL-UTF8.sh

UPDATE pg_database SET datistemplate = FALSE WHERE datname = 'template1';
DROP DATABASE template1;
CREATE DATABASE template1 WITH TEMPLATE = template0 ENCODING = 'UNICODE';
UPDATE pg_database SET datistemplate = TRUE WHERE datname = 'template1';
\c template1
VACUUM FREEZE;
UPDATE pg_database SET datallowconn = FALSE WHERE datname = 'template1';