Logging Colorization Colorize Hanami logger with your custom palette

Logging Colorization

Hanami uses a default color palette for standard output logging.

Custom colorizer

You can build your own colorization strategy:

# config/environment.rb
# ...
require_relative "./logger_colorizer"

Hanami.configure do
  # ...

  environment :development do
    logger level: :info, colorizer: LoggerColorizer.new
  end
end
# config/logger_colorizer.rb
require "hanami/logger"
require "paint" # gem install paint

class LoggerColorizer < Hanami::Logger::Colorizer
  def initialize(colors: { app: [:red, :bright], severity: [:red, :blue], datetime: [:italic, :yellow] })
    super
  end

  private

  def colorize(message, color:)
    Paint[message, *color]
  end
end

Disable colorization

In order to disable the colorization:

# config/environment.rb
# ...

Hanami.configure do
  # ...

  environment :development do
    logger level: :info, colorizer: false
  end
end

Twitter Facebook

Want to learn more about Hanami?

We have written an extensive Getting Started guide for curious people like you.

Get started