How to handle error exception message

[derk153]

Lograge: 0.4.1
Rails: 5.0
Ruby: 2.3.1

I need to display in lograge json output error messages from exception errors

Lograge configuration:

config.logger = ActFluentLoggerRails::Logger.new
config.lograge.enabled = true
config.lograge.formatter = Lograge::Formatters::Json.new
config.lograge.custom_options = lambda do |event|
  {
    params: event.payload[:params].except(%w(controller action format id)),
    tag: ENV['HOST']
  }
end

How can I add to the lograge log a message, that I'm getting in errors rescuing like this?

begin 
  yield
rescue StandardError => e
  logger.error e.message
end

[rodrigoapereira]

Same issue here.

[benlovell]

Don't rescue from the error and Rails will include this information in the payload with the :exception_object key. This should be trivially easy to massage into the correct shape JSON i.e. merging the backtrace into a single line.

However, it's worth stating most folks' preference is to rely on exception reporting services for this kind of stuff.

[dugsmith]

@benlovell, I'm seeing the :exception key when an exception is thrown, but not the :exception_objectkey. Using Rails 4.2.8 with lograge 0.5.1. Is there something I need to do to enable that object, so I can add the backtrace to the JSON error log?

[dugsmith]

@benlovell I see now, it's a Rails 5 thing.