Module: MotionPrime::ModelDirtyMixin

Extended by:
MotionSupport::Concern
Included in:
Model
Defined in:
motion-prime/models/_dirty_mixin.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'motion-prime/models/_dirty_mixin.rb', line 5

def self.included(base)
  base.class_attribute :_changed_attributes
end

Instance Method Details

#changed_attributes ⇒ Object 



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# File 'motion-prime/models/_dirty_mixin.rb', line 28

def changed_attributes
  @_changed_attributes ||= {}
end

#has_changed?(key = nil) ⇒ Boolean

Return true if model was changed

Parameters:

  • key (Symbol, String) (defaults to: nil) —

    (not required) will return result only for that attribute if specified

Returns:

  • (Boolean) 


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# File 'motion-prime/models/_dirty_mixin.rb', line 40

def has_changed?(key = nil)
  if key
    changed_attributes.has_key?(key.to_s)
  else
    changed_attributes.present?
  end
end

#reload ⇒ Object

Reverts model changes and returns saved version



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# File 'motion-prime/models/_dirty_mixin.rb', line 57

def reload
  changed_attributes.each do |key, value|
    self.info[key] = value
  end
  reset_changed_attributes
  self
end

#reset_changed_attributes ⇒ Object 



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# File 'motion-prime/models/_dirty_mixin.rb', line 32

def reset_changed_attributes
  @_changed_attributes = {}
end

#save ⇒ Object 



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# File 'motion-prime/models/_dirty_mixin.rb', line 48

def save
  super
  reset_changed_attributes
  self
end

#track_changed_attributes(&block) ⇒ Object 



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# File 'motion-prime/models/_dirty_mixin.rb', line 9

def track_changed_attributes(&block)
  @_changed_attributes ||= {}
  old_attrs = self.info.clone
  result = block.call
  new_attrs = self.info.clone
  new_bags = self._bags.clone
  new_attrs.each do |key, value|
    if value != old_attrs[key] && !@_changed_attributes.has_key?(key.to_s)
      @_changed_attributes[key.to_s] = old_attrs[key]
    end
  end
  new_bags.each do |key, value|
    if value.key != old_attrs[key] && !@_changed_attributes.has_key?(key.to_s)
      @_changed_attributes[key.to_s] = old_attrs[key]
    end
  end
  result
end