Class: Yesterday::Versioning

Inherits:
Object
  • Object
show all
Defined in:
lib/yesterday/versioning.rb

Class Method Summary collapse

Class Method Details

.changeset_for(version_number, object) ⇒ Object 



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# File 'lib/yesterday/versioning.rb', line 28

def changeset_for(version_number, object)
  Changeset.for_changed_object(object).version(version_number).first
end

.changesets_for(object) ⇒ Object 



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# File 'lib/yesterday/versioning.rb', line 8

def changesets_for(object)
  Changeset.for_changed_object(object)
end

.create_changeset_for(object) ⇒ Object 



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# File 'lib/yesterday/versioning.rb', line 4

def create_changeset_for(object)
  Changeset.create :changed_object => object
end

.current_version_number_for(object) ⇒ Object 



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# File 'lib/yesterday/versioning.rb', line 12

def current_version_number_for(object)
  changesets_for(object).last.try(:version_number) || 0
end

.diff_for(from_version_number, to_version_number, object) ⇒ Object 



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# File 'lib/yesterday/versioning.rb', line 20

def diff_for(from_version_number, to_version_number, object)
  from_attributes = object_attributes_for(from_version_number, object)
  to_attributes   = object_attributes_for(to_version_number, object)
  diff            = Differ.new(from_attributes, to_attributes).diff

  VersionedObjectCreator.new(diff).to_object
end

.object_attributes_for(version_number, object) ⇒ Object 



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# File 'lib/yesterday/versioning.rb', line 32

def object_attributes_for(version_number, object)
  changeset_for(version_number, object).object_attributes
end

.versioned_object_for(version_number, object) ⇒ Object 



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# File 'lib/yesterday/versioning.rb', line 16

def versioned_object_for(version_number, object)
  changeset_for(version_number, object).try(:object)
end