sample2.rb

require 'json'
module REXMLInspector
  def to_rdbg_mimebundle kw
    json = JSON.generate {
      type: :tree,
      data: get_tree(self)
    }
    [
      {
        "application/json" => json
      }
    ]
  end

  def get_tree elems
    ary = []
    elems.each_element{|elem|
      hash = {}
      key = elem.name
      childs = []
      if elem.attributes.size > 0
        attrs = {}
        elem.attributes.each_attribute{|attribute|
          attrs[attribute.name] = attribute.value
        }
        childs << attrs
      end
      if elem.has_elements?
        childs.push *get_tree(elem)
      end
      if childs.size == 0
        hash[key] = elem.text
      else
        if elem.text && elem.text.strip != ""
          key = "#{key} #{elem.text}"
        end
        hash[key] = childs
      end
      ary << hash
    }
    ary
  end
end

begin
  require 'rexml'
  REXML::Document.prepend REXMLInspector
rescue LoadError
end

module ActiveRecordInspector
  def to_obj_inspector kw
    ary = self.to_a
    table_data = ary[kw['offset'], kw['pageSize']].map{|elem| elem.attributes}
    x_keys = []
    y_keys = []
    table_data.first.each{|key, val|
      if key == 'id' || !val.is_a?(Numeric)
        x_keys << key
      else
        y_keys << key
      end
    }
    table = JSON.generate({
      type: :table,
      data: table_data,
      paginate: {
        totalLen: ary.size
      }
    })
    bar = JSON.generate({
      type: :barChart,
      data: table_data,
      xAxisKeys: x_keys,
      yAxisKeys: y_keys
    })
    line = JSON.generate({
      type: :lineChart,
      data: table_data,
      xAxisKeys: x_keys,
      yAxisKeys: y_keys
    })
    [
      "application/json" => table,
      "application/json" => bar,
      "application/json" => line
    ]
  end
end

begin
  require 'active_support'
  ActiveSupport.on_load(:active_record) do
    ActiveRecord::Relation.include ActiveRecordInspector
  end
rescue LoadError
end