cute backtrace logging

app/controllers/scores_controller.rb

@@ -46,13 +46,18 @@ class ScoresController < ApplicationController
 
   # DELETE /scores/1
   def destroy
-    raise 'Unable to destroy this score'
+    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'
+  end
+
   # Use callbacks to share common setup or constraints between actions.
   def set_score
     @score = Score.find(params[:id])

lib/formatters/basic_formatter.rb

@@ -1,6 +1,7 @@
 # Opinioned Rails custom formatter
 class BasicFormatter < SemanticLogger::Formatters::Color
   NAME_MAX_SIZE = 25
+  CONTENT_PREFIX = '  '.freeze
 
   ANSI_DEBUG = "\e[90m".freeze
   ANSI_INFO = SemanticLogger::AnsiColors::GREEN
@@ -33,7 +34,12 @@ class BasicFormatter < SemanticLogger::Formatters::Color
   def message
     return unless log.message
 
-    "  #{CONTENT_COLOR_MAP[log.level]}#{log.message}#{color_map.clear}"
+    message = log.message
+    if log.name == 'Rails' && message.starts_with?('Completed')
+      message.rstrip!
+      message += "\n" unless message.starts_with?('Completed 5')
+    end
+    "#{CONTENT_PREFIX}#{CONTENT_COLOR_MAP[log.level]}#{message}#{color_map.clear}"
   end
 
   def level
@@ -45,16 +51,14 @@ class BasicFormatter < SemanticLogger::Formatters::Color
     "#{ANSI_DEBUG}#{log.name.truncate(NAME_MAX_SIZE).center(NAME_MAX_SIZE)}#{color_map.clear}"
   end
 
-  def exception
+  def exception # rubocop:disable Metrics/AbcSize
     return unless log.exception
 
     root_path = Rails.root.to_s
-    backtrace = log.exception.backtrace.select { |line| line.starts_with?(root_path) }
-    if backtrace.count.positive?
-      "-- #{ANSI_REVERSED_ERROR}#{log.exception.class}#{color_map.clear} #{color}#{log.exception.message}\n#{color} ↳ #{backtrace.join("\n ↳ ")}#{color_map.clear}\n\n"
-    else
-      "-- #{ANSI_REVERSED_ERROR}#{log.exception.class}: #{log.exception.message}#{color_map.clear}\n\n"
-    end
+    stack = log.exception.backtrace.select { |line| line.starts_with?(root_path) }
+    stack = stack.map { |line| line.delete_prefix("#{root_path}/") }
+
+    "#{CONTENT_PREFIX}#{ANSI_REVERSED_ERROR}#{log.exception.class}#{color_map.clear}: #{color}#{log.exception.message}#{color_map.clear}#{backtrace(stack)}" # rubocop:disable Layout/LineLength
   end
 
   def call(log, logger)
@@ -64,4 +68,13 @@ class BasicFormatter < SemanticLogger::Formatters::Color
 
     [name, level, tags, named_tags, duration, message, payload, exception].compact.join(' ')
   end
+
+  private
+
+  def backtrace(stack)
+    nil unless stack.count.positive?
+
+    prefix = [name, level, tags, named_tags, duration, message, payload, CONTENT_PREFIX].compact.join(' ')
+    "\n#{prefix}#{ANSI_ERROR}↳ #{stack.join("\n#{prefix}#{ANSI_ERROR}↳ ")}#{color_map.clear}"
+  end
 end