Class: ActiveRecordWithoutCallbacks

Inherits:
Object
  • Object
show all
Defined in:
lib/active-record-without-callbacks.rb

Constant Summary collapse

TRUE_BLOCK = 
proc{ true }

Class Method Summary collapse

Class Method Details

.wo_callbacks(klass) ⇒ Object 



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# File 'lib/active-record-without-callbacks.rb', line 4

def self.wo_callbacks(klass)
  #List of various possible callbacks.
  takes = [:_create_callbacks, :_find_callbacks, :_initialize_callbacks, :_destroy_callbacks, :_commit_callbacks, :_rollback_callbacks, :_save_callbacks, :_touch_callbacks, :_update_callbacks, :_validate_callbacks, :_validation_callbacks, ]
  
  #Array containing previous values.
  saved = []
  
  Thread.exclusive do
    takes.each do |take|
      #Store previous value for restoring later.
      saved << {
        :take => take,
        :value => klass.__send__(take)
      }
      
      #Clear all callbacks.
      klass.__send__("#{take}=", [])
      
      #Test that callbacks really was cleared.
      raise "Expected '#{take}' to be empty but it wasnt: #{klass.__send__(take)}" unless klass.__send__(take).empty?
    end
    
    klass.after_save(&TRUE_BLOCK)
    
    begin
      return yield
    ensure
      #Restore previous callbacks.
      saved.each do |save|
        klass.__send__("#{save[:take]}=", save[:value])
      end
      
      klass.after_save(&TRUE_BLOCK)
    end
  end
end