Update to use correct LoggerSilencer in ActiveSupport 6

[hasghari]

I don't know what the policy of this gem is regarding supporting older ruby versions but given that ruby has officially dropped support for 2.3, I've removed the unsupported versions from the Travis CI build.

[schneems]

You should probably not be using this gem with Rails 6. Rails generates files config that you can use to output logs to stdout with an env var now. I would recommend using that config.

[hasghari]

You should probably not be using this gem with Rails 6. Rails generates files config that you can use to output logs to stdout with an env var now. I would recommend using that config.

Thanks.

[hasghari]

@schneems This gem doesn't work as expected in Rails 6 because Rails will always override the logger level and set it to config.log_level, regardless of whether we have set up a custom logger.
https://github.com/rails/rails/blob/ee10e05af27facf42b1c49f8aaa0463d3af6989c/railties/lib/rails/application/bootstrap.rb#L53

It will be helpful to update the dependencies to reflect the incompatibility with Rails 6.

[hasghari]

In case any one else runs into this for Rails 6, this is how I updated my config/application.rb to replace this gem:

config.log_level = ENV.fetch('LOG_LEVEL', 'INFO').downcase

if ENV['RAILS_LOG_TO_STDOUT'].present?
  logger           = ActiveSupport::Logger.new(STDOUT)
  logger.level     = ActiveSupport::Logger.const_get(config.log_level.to_s.upcase)
  config.logger    = ActiveSupport::TaggedLogging.new(logger)
end