Class: ActiveModel::ForcedMutationTracker

Inherits:
AttributeMutationTracker show all
Defined in:
activemodel/lib/active_model/attribute_mutation_tracker.rb

Overview

:nodoc:

Constant Summary

Constants inherited from AttributeMutationTracker

AttributeMutationTracker::OPTION_NOT_GIVEN

Instance Method Summary collapse

Methods inherited from AttributeMutationTracker

#any_changes?, #changed?, #changed_attribute_names, #changed_values, #changes

Constructor Details

#initialize(attributes) ⇒ ForcedMutationTracker

Returns a new instance of ForcedMutationTracker.



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# File 'activemodel/lib/active_model/attribute_mutation_tracker.rb', line 92

def initialize(attributes)
  super
  @finalized_changes = nil
end

Instance Method Details

#change_to_attribute(attr_name) ⇒ Object 



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# File 'activemodel/lib/active_model/attribute_mutation_tracker.rb', line 101

def change_to_attribute(attr_name)
  if finalized_changes&.include?(attr_name)
    finalized_changes[attr_name].dup
  else
    super
  end
end

#changed_in_place?(attr_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'activemodel/lib/active_model/attribute_mutation_tracker.rb', line 97

def changed_in_place?(attr_name)
  false
end

#finalize_changes ⇒ Object 



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# File 'activemodel/lib/active_model/attribute_mutation_tracker.rb', line 125

def finalize_changes
  @finalized_changes = changes
end

#force_change(attr_name) ⇒ Object 



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# File 'activemodel/lib/active_model/attribute_mutation_tracker.rb', line 121

def force_change(attr_name)
  forced_changes[attr_name] = clone_value(attr_name) unless attribute_changed?(attr_name)
end

#forget_change(attr_name) ⇒ Object 



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# File 'activemodel/lib/active_model/attribute_mutation_tracker.rb', line 109

def forget_change(attr_name)
  forced_changes.delete(attr_name)
end

#original_value(attr_name) ⇒ Object 



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# File 'activemodel/lib/active_model/attribute_mutation_tracker.rb', line 113

def original_value(attr_name)
  if changed?(attr_name)
    forced_changes[attr_name]
  else
    fetch_value(attr_name)
  end
end