# error logging

**URL:** <https://discuss.rubyonrails.org/t/error-logging/30154>\
**Category:** rubyonrails-talk\
**Created:** [June 3, 2008, 11:06am UTC](https://discuss.rubyonrails.org/t/error-logging/30154 "2008-06-03T11:06:23Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![11175](https://avatars.discourse-cdn.com/v4/letter/1/8edcca/32.png) [@11175](https://discuss.rubyonrails.org/u/11175)\
**Post date:** [June 3, 2008, 11:06am UTC](https://discuss.rubyonrails.org/t/error-logging/30154/1 "2008-06-03T11:06:23Z")

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hi, just a quickie,

how do i write custom error messages to the log so i can debug a little better.

similar to writing stuff to the Javascript console with console.debug('222'); or alert('444');

appreciate it?

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**Author:** ![11175](https://avatars.discourse-cdn.com/v4/letter/1/8edcca/32.png) [@11175](https://discuss.rubyonrails.org/u/11175)\
**Post date:** [June 3, 2008, 11:08am UTC](https://discuss.rubyonrails.org/t/error-logging/30154/2 "2008-06-03T11:08:39Z")

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ahh,

think i found out how,

[http://www.boowebb.com/2008/01/09/writing-to-the-log-in-rails](http://www.boowebb.com/2008/01/09/writing-to-the-log-in-rails)

RAILS\_DEFAULT\_LOGGER.info "foo bar"

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**Author:** ![11175](https://avatars.discourse-cdn.com/v4/letter/1/8edcca/32.png) [@11175](https://discuss.rubyonrails.org/u/11175)\
**Post date:** [June 3, 2008, 11:13am UTC](https://discuss.rubyonrails.org/t/error-logging/30154/3 "2008-06-03T11:13:48Z")

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right so far

but you need RAILS\_DEFAULT\_LOGGER only in tests in normal model, controller or view code you can use

logger.info "foo bar"

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**Author:** ![Fredrik1](https://avatars.discourse-cdn.com/v4/letter/f/76d3ee/32.png) [@Fredrik1](https://discuss.rubyonrails.org/u/Fredrik1)\
**Post date:** [June 5, 2008, 5:15am UTC](https://discuss.rubyonrails.org/t/error-logging/30154/4 "2008-06-05T05:15:33Z")

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logger.error "My Error" logger.info "My FYI to the log" logger.debug "My debug"

-Fredrik John Griffiths wrote:

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**Author:** ![11175](https://avatars.discourse-cdn.com/v4/letter/1/8edcca/32.png) [@11175](https://discuss.rubyonrails.org/u/11175)\
**Post date:** [June 5, 2008, 8:32am UTC](https://discuss.rubyonrails.org/t/error-logging/30154/5 "2008-06-05T08:32:10Z")

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thanks,

well this is annoying, i can't get it to post messages to the log, but the code runs thru ok; argh!

logger.info "some message"