Module: MassiveRecord::ORM::InTheMiddleOfSavingTracker

Included in:
Embedded
Defined in:
lib/massive_record/orm/in_the_middle_of_saving_tracker.rb

Overview

Tracks if we are in the middle of being saved or not, and if we are asked valid? in the middle of a save, we’ll return the last answer we gave to that question, instead of running validations again.

Main reason for doing so is when used in conjunction with Embedded records, in the following situations:

  1. Calling save on an embedded record when the owner is not persisted will call save on the same record again when owner is saved and informs embeds many proxy that it is being about to be saved. Resulting in all callbacks fire again on the record which issued the save in the first place.

    We can query each embedded record inside of embeds_many#parent_will_be_saved! if we are to call save on it (to make each embedded record update it’s persisted state), or if we should not do it, if the embedded record was the one triggered the save in the first place.

  2. Calling save on an embedded record when the owner is not persisted will first validate the embedded record, then the owner will validate all associated records, including the one record which issued the save and therefor is validated.

    We can controll if we are to run validations on a record
or not, based if we are in the middle of a save on current
record, thus callbacks (like before_validations etc) will
not run twice.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#in_the_middle_of_saving ⇒ Object (readonly) Also known as: in_the_middle_of_saving?

Returns the value of attribute in_the_middle_of_saving.



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# File 'lib/massive_record/orm/in_the_middle_of_saving_tracker.rb', line 40

def in_the_middle_of_saving
  @in_the_middle_of_saving
end

Instance Method Details

#save(options = {}) ⇒ Object 



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# File 'lib/massive_record/orm/in_the_middle_of_saving_tracker.rb', line 43

def save(options = {})
  with_in_the_middle_of_saving_tracker { super }
end

#save!(options = {}) ⇒ Object 



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# File 'lib/massive_record/orm/in_the_middle_of_saving_tracker.rb', line 47

def save!(options = {})
  with_in_the_middle_of_saving_tracker { super }
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/massive_record/orm/in_the_middle_of_saving_tracker.rb', line 51

def valid?(*)
  if in_the_middle_of_saving?
    if @last_valid_value_inside_of_current_save.nil?
      @last_valid_value_inside_of_current_save = super
    else
      @last_valid_value_inside_of_current_save
    end
  else
    super
  end
end