How do I log the entire trace back of a Ruby exception using the default Rails logger?
logger.error $!.backtraceAlso, don't forget you can
rescue ErrorType => error_nameto give your error a variable name other than the default $!.
The way rails does it is
137 logger.fatal(138 "\n\n#{exception.class} (#{exception.message}):\n " +139 clean_backtrace(exception).join("\n ") +140 "\n\n"141 )248 def clean_backtrace(exception)249 if backtrace = exception.backtrace250 if defined?(RAILS_ROOT)251 backtrace.map { |line| line.sub RAILS_ROOT, '' }252 else253 backtrace254 end255 end256 end
In later versions of Rails, simply uncomment the following line in RAIL_ROOT/config/initializers/backtrace_silencers.rb (or add this file itself if it's not there):
# Rails.backtrace_cleaner.remove_silencers!This way you get the full backtrace written to the log on an exception. This works for me in v2.3.4.