I have a Rails application which has an action which is invoked frequently enough to be inconvenient when I am developing, as it results in a lot of extra log output I don't care about. How can I get rails not to log anything (controller, action, parameters, complection time, etc.) for just this one action? I'd like to conditionalize it on RAILS_ENV as well, so logs in production are complete.
Thanks!
Perhaps what you really need to is just filter your log file before you view it? Run it through sed or awk perhaps?
It is probably a bad idea to hide things from the development log.
You can silence the Rails logger object:
def action
Rails.logger.silence do
# Things within this block will not be logged...
end
end
The answer turns out to be a lot harder than I expected, since rails really does provide no hook to do this. Instead, you need to wrap some of the guts of ActionController::Base. In the common base class for my controllers, I do
def silent?(action)
false
end
# this knows more than I'd like about the internals of process, but
# the other options require knowing even more. It would have been
# nice to be able to use logger.silence, but there isn't a good
# method to hook that around, due to the way benchmarking logs.
def log_processing_with_silence_logs
if logger && silent?(action_name) then
@old_logger_level, logger.level = logger.level, Logger::ERROR
end
log_processing_without_silence_logs
end
def process_with_silence_logs(request, response, method = :perform_action, *arguments)
ret = process_without_silence_logs(request, response, method, *arguments)
if logger && silent?(action_name) then
logger.level = @old_logger_level
end
ret
end
alias_method_chain :log_processing, :silence_logs
alias_method_chain :process, :silence_logs
then, in the controller with the method I want to suppress logging on:
def silent?(action)
RAILS_ENV == "development" && ['my_noisy_action'].include?(action)
end