プレフィクスのついたテーブル名/カラム名とかその他良い感じにするやつ

table_fucking.rb

module TableFucking
  extend ActiveSupport::Concern

  included do
    self.table_name = 'prefix_' + name.match(/\APrefix(.+)\Z/)[1].underscore

    columns = connection.columns(table_name)

    reserved_words = ActiveRecord::Base.instance_methods
    columns.each do |column|
      alias_column_name = column.name.gsub(/\A(?:integer|float|string|text|binary|boolean|time|timestamp|date|datetime)_?/, '')
      next if reserved_words.include?(alias_column_name.to_sym)
      alias_attribute(alias_column_name, column.name)
    end

    if method_defined?(:deleted)
      default_scope -> {
        where(boolean_deleted: false)
      }

      before_create do
        self.deleted = false
      end

      define_method :destroy do
        run_callbacks :destroy do
          self.deleted = true
          self.save
        end
      end
    end

    if method_defined?(:created)
      before_create do
        self.created = Time.now
      end
    end

    if method_defined?(:modified)
      before_save do |m|
        self.modified = Time.now
      end
    end
  end
end