Awesome Print is a Ruby library that pretty prints Ruby objects in full color exposing their internal structure with proper indentation. Rails ActiveRecord objects and usage within Rails templates are supported via included mixins.

• 支持自定义颜色
• 支持 erb，haml
• 支持 irb，pry
• 支持 logger
• 支持 rails console

暂时就看到这些，用起来还是比较简单

看个例子吧

# irb(main):011:0> ap $: