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i'm using POW for local rails development. i don't know why, but i can't print or puts information to my development.log. i want to puts the content of variables to console / log from my controller. any advice?
i read my logs with tail -f logs/development.log
thanks!
228
looks familiar, right? When you use puts, Ruby calls . to_s on an object, converting it to a string then displaying on the screen. A neat thing about puts is that it adds a new line at the end of each statement so you can read it more easily.
The puts (short for "out*put s*tring") and print commands are both used to display in the console the results of evaluating Ruby code. The primary difference between them is that puts adds a new line after executing, and print does not.
While the print method allows you to print information in the same line even multiple times, the puts method adds a new line at the end of the object. On the other hand, p is useful when you are trying to understand what your code does, e.g. when you are trying to figure out a certain error.
puts(string) in ruby writes the string value into $stdout . For example if you run ruby console in terminal, string will be written into your terminal. At the same time every method in ruby returns something and method puts returns nil .
Instead of puts, try logger.info(). Logging in Rails is very flexible, but it does mean that you might not be able to use the simplest tools sometimes.
192
If you're doing debugging and only want to see some messages in the logs you can do the following:
Rails.logger.debug("debug::" + person.name)
and
$ pow logs | grep debug::
now you'll only see logging messages that start with debug::
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