easy-going-rails/app/controllers/scores_controller.rb

# ScoresController define Score and Grade interactions
class ScoresController < ApplicationController
  include Pagy::Backend
  include AnsiColors

  before_action :set_score, only: %i[show edit update destroy]

  def grayshade(n)
    shade = eval("TEXT_GRAY_#{n}")
    shade += n.to_s
  end

  # GET /scores
  def index
    @pagy, @scores = pagy(Score.all)

    # logger.debug 'this is a debug message'
    # logger.info 'this is a super long message which should be wrapped. ' * 5
    shades = [800, 700, 600, 500, 400, 300, 200, 100].map { |n| grayshade(n) }.join(' ')

    logger.info(BG_BLACK + shades)
    logger.info(BG_GRAY + shades)
    logger.info(BG_WHITE + shades)
    logger.info(BG_BLACK + "this is #{BOLD}a message in bold#{CLEAR}, isnt'it?")
    logger.info(BG_GRAY + "this is #{BOLD}a message in bold#{CLEAR}, isnt'it?")
    logger.info(BG_WHITE + TEXT_GRAY_800 + "this is #{BOLD}a message in bold#{CLEAR}, isnt'it?")
    logger.info(BG_WHITE + TEXT_GRAY_600 + "this is #{BOLD}a message in bold#{CLEAR}, isnt'it?")
    logger.info(BG_WHITE + TEXT_GRAY_400 + "this is #{BOLD}a message in bold#{CLEAR}, isnt'it?")
    logger.info(BG_WHITE + TEXT_GRAY_300 + "this is #{BOLD}a message in bold#{CLEAR}, isnt'it?")
    logger.info(BG_WHITE + TEXT_GRAY_200 + "this is #{BOLD}a message in bold#{CLEAR}, isnt'it?")
    logger.info(BG_WHITE + TEXT_GRAY_100 + "this is #{BOLD}a message in bold#{CLEAR}, isnt'it?")

    # logger.info "these are gray shades : #{TEXT_GRAY_800}800#{TEXT_GRAY_600}600#{TEXT_GRAY_400}400#{TEXT_GRAY_200}200#{TEXT_GRAY_100}100  \x1b[38;5;7m7.0\x1b[38;5;15m15.0\x1b[38;5;232m232	\x1b[38;5;233m233	\x1b[38;5;234m234	\x1b[38;5;235m235	\x1b[38;5;236m236	\x1b[38;5;237m237	\x1b[38;5;238m	\x1b[38;5;239m	\x1b[38;5;240m	\x1b[38;5;241m	\x1b[38;5;242m	\x1b[38;5;243m
    # \x1b[38;5;244m	\x1b[38;5;245m245	\x1b[38;5;246m	\x1b[38;5;247m	\x1b[38;5;248m248	\x1b[38;5;249m	\x1b[38;5;250m	\x1b[38;5;251m	\x1b[38;5;252m	\x1b[38;5;253m253	\x1b[38;5;254m	\x1b[38;5;255m255"

    # logger.info "these are gray shades : #{BG_BLACK}#{TEXT_GRAY_800}800#{TEXT_GRAY_600}600#{TEXT_GRAY_400}400#{TEXT_GRAY_200}200#{TEXT_GRAY_100}100  \x1b[38;5;7m7.0 \x1b[38;5;15m15.0 \x1b[38;5;232m232	\x1b[38;5;233m233	\x1b[38;5;234m234	\x1b[38;5;235m235	\x1b[38;5;236m236	\x1b[38;5;237m237	\x1b[38;5;238m	\x1b[38;5;239m239	\x1b[38;5;240m	\x1b[38;5;241m	\x1b[38;5;242m242	\x1b[38;5;243m
    # \x1b[38;5;244m	\x1b[38;5;245m245	\x1b[38;5;246m246	\x1b[38;5;247m	\x1b[38;5;248m248	\x1b[38;5;249m249	\x1b[38;5;250m	\x1b[38;5;251m	\x1b[38;5;252m252	\x1b[38;5;253m253	\x1b[38;5;254m	\x1b[38;5;255m255 "

    # logger.info "these are gray shades : #{BG_WHITE}#{TEXT_GRAY_800}800#{TEXT_GRAY_600}600#{TEXT_GRAY_400}400#{TEXT_GRAY_200}200#{TEXT_GRAY_100}100  \x1b[38;5;7m7.0\x1b[38;5;15m15.0\x1b[38;5;232m232	\x1b[38;5;233m233	\x1b[38;5;234m234	\x1b[38;5;235m235	\x1b[38;5;236m236	\x1b[38;5;237m237	\x1b[38;5;238m	\x1b[38;5;239m	\x1b[38;5;240m	\x1b[38;5;241m	\x1b[38;5;242m	\x1b[38;5;243m
    # \x1b[38;5;244m	\x1b[38;5;245m245	\x1b[38;5;246m	\x1b[38;5;247m	\x1b[38;5;248m248	\x1b[38;5;249m	\x1b[38;5;250m	\x1b[38;5;251m	\x1b[38;5;252m	\x1b[38;5;253m253	\x1b[38;5;254m	\x1b[38;5;255m255"

    # logger.info "these are gray shades : #{BG_BLACK}#{TEXT_GRAY_800}800#{TEXT_GRAY_600}600#{TEXT_GRAY_400}400#{TEXT_GRAY_200}200#{TEXT_GRAY_100}100"
    # logger.info "these are gray shades : #{BG_WHITE}#{TEXT_GRAY_800}800#{TEXT_GRAY_600}600#{TEXT_GRAY_400}400#{TEXT_GRAY_200}200#{TEXT_GRAY_100}100"
    # logger.info "these are gray shades : #{BOLD}#{TEXT_GRAY_800}800#{TEXT_GRAY_600}600#{TEXT_GRAY_400}400#{TEXT_GRAY_200}200#{TEXT_GRAY_100}100"
    # logger.info "these are gray shades : #{BOLD}#{UNDERLINE}#{TEXT_GRAY_800}800#{TEXT_GRAY_600}600#{TEXT_GRAY_400}400#{TEXT_GRAY_200}200#{TEXT_GRAY_100}100"
    # logger.info "these are gray shades : #{UNDERLINE}#{TEXT_GRAY_800}800#{TEXT_GRAY_600}600#{TEXT_GRAY_400}400#{TEXT_GRAY_200}200#{TEXT_GRAY_100}100"

    # logger.info({ one: 1, two: 2 })
    # logger.info 'this is an information', { four: 4, five: 5 }
    # logger.debug BigDecimal('0.0003')
    # logger.warn 'scores are', @scores
    # logger.warn "this is a warning\n yop\n  cool"
    # logger.error 'this is an error message'
    # logger.error "error message line #1\nerror message line #2\nerror message line #3\n\n"
    # logger.info 'end of normal message'
    # logger.debug @scores
    # sleep 0.5
  end

  # GET /scores/1
  def show; end

  # GET /scores/new
  def new
    @score = Score.new
    flash.now[:notice] = 'Unique name is mandatory!'
    flash.now[:alert] = 'Your book was not found'
    sleep 0.3
  end

  # GET /scores/1/edit
  def edit; end

  # POST /scores
  def create
    @score = Score.new(score_params)

    if @score.save
      redirect_to @score, notice: 'Score was successfully created.'
    else
      render :new, status: :unprocessable_entity
    end
  end

  # PATCH/PUT /scores/1
  def update
    if @score.update(score_params)
      redirect_to @score, notice: 'Score was successfully updated.', status: :see_other
    else
      render :edit, status: :unprocessable_entity
    end
  end

  # DELETE /scores/1
  def destroy
    do_an_exception

    @score.destroy!
    redirect_to scores_url, notice: 'Score was successfully destroyed.', status: :see_other
  end

  private

  def do_an_exception
    raise 'Unable to destroy this score' * 5
  end

  # Use callbacks to share common setup or constraints between actions.
  def set_score
    @score = Score.find(params[:id])
    @score.grade
  end

  # Only allow a list of trusted parameters through.
  def score_params
    params.require(:score).permit(:name, :grade)
  end
end