awesome_delete

Recursive delete appropriately

Recursively delete a collection and its all assoication with less sqls. It thinks about the following

• STI (delete the associations of subclass)
• polymorphism
• counter_cache, touch (avoid to unnecessary handle)

gem install awesome_delete

class Form < ActiveRecord::Base
  has_many :fields, dependent: :destroy
end

class Field < ActiveRecord::Base
  has_many :options, dependent: :destroy
end

class Option < ActiveRecord::Base
end

# it deletes forms, fields and options
Form.delete_collection [1,4,5]

Overwrite __delete_collection class method if not satisfy your need.