extend active admin to prettier boolean values

active_admin.rb

# It extends activeadmin to show pretty boolean values
# 
# config/initializers/active_admin.rb

module ActiveAdmin
  module Views
    class TableFor
      def bool_column(attribute)
        column(attribute){ |model| model[attribute] ? '✔'.html_safe : '✗'.html_safe }
      end
    end
    class AttributesTable
      def bool_row(attribute)
        row(attribute){ |model| model[attribute] ? '✔'.html_safe : '✗'.html_safe }
      end
    end
  end
end

# example
# app/admin/user.rb

ActiveAdmin.register User do
  index do
    column :name
    column :email
    bool_column :admin
  end
  show do
    attributes_table do
      row :name
      row :email
      bool_row :admin
    end
  end
end

And use this code if you just want to show the booleans with status_tag in AttributesTable view (no need of changing column methods to bool_column:

ActiveAdmin::Views::AttributesTable.class_eval do
  def content_for(record, attr)
    value = find_attr_value(record, attr)
    if is_boolean?(attr, record)
      value = status_tag(value)
    else
      value = pretty_format(value)
    end
    value.blank? && current_arbre_element.children.to_s.empty? ? empty_value : value
  end

  def is_boolean?(data, item)
    if item.respond_to? :has_attribute?
      item.has_attribute?(data) &&
        item.column_for_attribute(data) &&
        item.column_for_attribute(data).type == :boolean
    end
  end
end

its really helpful....i am looking for it from last two days