Class: AttributesHistory::HistoryRetriever

Inherits:
Object
  • Object
show all
Defined in:
lib/attributes_history/history_retriever.rb

Instance Method Summary collapse

Constructor Details

#initialize(object) ⇒ HistoryRetriever

Returns a new instance of HistoryRetriever.



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# File 'lib/attributes_history/history_retriever.rb', line 5

def initialize(object)
  @object = object
  @cached_history = {}
end

Instance Method Details

#attribute_on_date(attribute, date) ⇒ Object 



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# File 'lib/attributes_history/history_retriever.rb', line 10

def attribute_on_date(attribute, date)
  history_association = @object.class.history_association(attribute)

  history_entry = @cached_history[[history_association, date]] ||=
                    find_entry_on(history_association, date)

  history_entry.public_send(attribute)
end