Elegantly logs rails params in aligned `key: value` form

elegant_log.rb

module ElegantLog
  extend ActiveSupport::Concern

  def elegant_log(params, display_name = nil)
    return if params.blank?
    spacer

    Rails.logger.info display_name || params.delete(:controller).titleize

    longest_length = params.keys.sort {|k1, k2| k2.length <=> k1.length}.first.length

    params.each do |key, value|
      display_aligned(key, value, longest_length)
    end
    spacer
  end

  private

  def display_aligned(key, value, longest_length)
    Rails.logger.info "#{key}:#{' ' * (longest_length - key.length)} #{value.inspect}"
  end

  def spacer
    Rails.logger.info star_line << star_line << "\n"
  end

  def star_line
    "\n" << "*" * 50
  end
end

Stick it in app/controllers/concerns and include in individual controllers (or your application controller) like

class ApplicationController < ActionController::API
  include ElegantLog
end

then log params like magic with elegant_log(params, 'optional display title') (default display title is the controller name).

Sample output:

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Mail Controller
user_id:          '41425'
source:           'newsletter'
action:           'unsubscribe'
message:          'quit sending me this shite'
complaint_number: 6621

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