module ActiveRecord::Acts::Versioned::Behaviors

Public Instance Methods

altered?() click to toggle source
# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 328
def altered?
  track_altered_attributes ? (version_if_changed - changed).length < version_if_changed.length : changed?
end
clear_old_versions() click to toggle source

Clears old revisions if a limit is set with the :limit option in acts_as_versioned. Override this method to set your own criteria for clearing old versions.

# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 286
def clear_old_versions
  return if self.class.max_version_limit == 0
  excess_baggage = send(self.class.version_column).to_i - self.class.max_version_limit
  if excess_baggage > 0
    self.class.versioned_class.delete_all ["#{self.class.version_column} <= ? and #{self.class.versioned_foreign_key} = ?", excess_baggage, id]
  end
end
clone_versioned_model(orig_model, new_model) click to toggle source

Clones a model. Used when saving a new version or reverting a model's version.

# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 333
def clone_versioned_model(orig_model, new_model)
  self.class.versioned_columns.each do |col|
    new_model[col.name] = orig_model.send(col.name) if orig_model.has_attribute?(col.name)
  end

  if orig_model.is_a?(self.class.versioned_class)
    new_model[new_model.class.inheritance_column] = orig_model[self.class.versioned_inheritance_column]
  elsif new_model.is_a?(self.class.versioned_class)
    new_model[self.class.versioned_inheritance_column] = orig_model[orig_model.class.inheritance_column]
  end
end
empty_callback() click to toggle source
# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 383
def empty_callback()
end
revert_to(version) click to toggle source

Reverts a model to a given version. Takes either a version number or an instance of the versioned model

# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 295
def revert_to(version)
  if version.is_a?(self.class.versioned_class)
    return false unless version.send(self.class.versioned_foreign_key) == id and !version.new_record?
  else
    return false unless version = versions.where(self.class.version_column => version).first
  end
  self.clone_versioned_model(version, self)
  send("#{self.class.version_column}=", version.send(self.class.version_column))
  true
end
revert_to!(version) click to toggle source

Reverts a model to a given version and saves the model. Takes either a version number or an instance of the versioned model

# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 308
def revert_to!(version)
  revert_to(version) ? save_without_revision : false
end
save_version() click to toggle source

INSTANCE METHODS Saves a version of the model in the versioned table. This is called in the after_save callback by default

# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 273
def save_version
  if @saving_version
    @saving_version = nil
    rev = self.class.versioned_class.new
    clone_versioned_model(self, rev)
    rev.send("#{self.class.version_column}=", send(self.class.version_column))
    rev.send("#{self.class.versioned_foreign_key}=", id)
    rev.save
  end
end
save_version?() click to toggle source

Checks whether a new version shall be saved or not. Calls version_condition_met? and changed?.

# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 346
def save_version?
  version_condition_met? && altered?
end
save_without_revision() click to toggle source

Temporarily turns off Optimistic Locking while saving. Used when reverting so that a new version is not created.

# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 313
def save_without_revision
  save_without_revision!
  true
rescue
  false
end
save_without_revision!() click to toggle source
# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 320
def save_without_revision!
  without_locking do
    without_revision do
      save!
    end
  end
end
version_condition_met?() click to toggle source

Checks condition set in the :if option to check whether a revision should be created or not. Override this for custom version condition checking.

# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 352
def version_condition_met?
  case
    when version_condition.is_a?(Symbol)
      send(version_condition)
    when version_condition.respond_to?(:call) && (version_condition.arity == 1 || version_condition.arity == -1)
      version_condition.call(self)
    else
      version_condition
  end
end
without_locking(&block) click to toggle source

Turns off optimistic locking for the duration of the block

@foo.without_locking do
  @foo.save
end
# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 379
def without_locking(&block)
  self.class.without_locking(&block)
end
without_revision(&block) click to toggle source

Executes the block with the versioning callbacks disabled.

@foo.without_revision do
  @foo.save
end
# File lib/erp_tech_svcs/extensions/active_record/acts_as_versioned.rb, line 369
def without_revision(&block)
  self.class.without_revision(&block)
end