# Error logging

**URL:** <https://www.ruby-forum.com/t/error-logging/139383>\
**Category:** Rails\
**Created:** [June 3, 2008, 1:06pm UTC](https://www.ruby-forum.com/t/error-logging/139383 "2008-06-03T13:06:23Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![softf5ajivanet](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9f8e36/32.png) [@softf5ajivanet](https://www.ruby-forum.com/u/softf5ajivanet)\
**Post date:** [June 3, 2008, 1:06pm UTC](https://www.ruby-forum.com/t/error-logging/139383/1 "2008-06-03T13:06:23Z")

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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:** ![softf5ajivanet](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9f8e36/32.png) [@softf5ajivanet](https://www.ruby-forum.com/u/softf5ajivanet)\
**Post date:** [June 3, 2008, 1:08pm UTC](https://www.ruby-forum.com/t/error-logging/139383/2 "2008-06-03T13:08:39Z")

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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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<div class="post-metadata">

**Author:** ![softf5ajivanet](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9f8e36/32.png) [@softf5ajivanet](https://www.ruby-forum.com/u/softf5ajivanet)\
**Post date:** [June 3, 2008, 1:13pm UTC](https://www.ruby-forum.com/t/error-logging/139383/3 "2008-06-03T13:13:48Z")

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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:** ![softf5ajivanet](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9f8e36/32.png) [@softf5ajivanet](https://www.ruby-forum.com/u/softf5ajivanet)\
**Post date:** [June 5, 2008, 7:16am UTC](https://www.ruby-forum.com/t/error-logging/139383/4 "2008-06-05T07:16:09Z")

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logger.error “My Error”  
logger.info “My FYI to the log”  
logger.debug “My debug”

-Fredrik

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<div class="post-metadata">

**Author:** ![softf5ajivanet](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9f8e36/32.png) [@softf5ajivanet](https://www.ruby-forum.com/u/softf5ajivanet)\
**Post date:** [June 5, 2008, 10:32am UTC](https://www.ruby-forum.com/t/error-logging/139383/5 "2008-06-05T10:32:10Z")

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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”