test:
  prepared_statements: false

PG::ProtocolViolation: ERROR: bind message supplies 2 parameters, but prepared            statement "a24" requires 1

/database?prepared_statements=false

configure :production, :development, :test do
  db = URI.parse(ENV['DATABASE_URL']

  ActiveRecord::Base.establish_connection(
      :adapter => db.scheme == 'postgres' ? 'postgresql' : db.scheme,
      :host                => db.host,
      :username            => db.user,
      :password            => db.password,
      :database            => db.path[1..-1],
      :encoding            => 'utf8',
      :prepared_statements => false,
  )
end