Module: TrackChanges::Model::ClassMethods

Defined in:
lib/track_changes/model.rb

Instance Method Summary collapse

Instance Method Details

#default_track_changes_fields ⇒ Object 



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# File 'lib/track_changes/model.rb', line 36

def default_track_changes_fields
  attribute_names - stored_attributes.keys.map(&:to_s) + stored_attributes.values.flatten.map(&:to_s)
end

#persist_tracked_changes(track_changes_by: nil) ⇒ Object

Record a diff and update the snapshot for all records in the scope This can be used to record a diff after an ‘update_all`.



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# File 'lib/track_changes/model.rb', line 51

def persist_tracked_changes(track_changes_by: nil)
  find_each do |record|
    record.track_changes_by = track_changes_by
    record.persist_tracked_changes
  end
end

#snapshot_all ⇒ Object

Create snapshots for all records so that the next changes made are captured This can be used to init track changes on existing records



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# File 'lib/track_changes/model.rb', line 42

def snapshot_all
  # Update existing snapshots
  joins(:snapshot).find_each {|record| record.snapshot.update }
  # Create new snapshots
  where.not(:id => joins(:snapshot)).find_each(&:create_snapshot)
end

#track_changes_fields ⇒ Object

Returns the method names to call to fetch the fields tracked for changes



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# File 'lib/track_changes/model.rb', line 25

def track_changes_fields
  fields =  Array(track_changes_options[:only]).collect(&:to_s).presence || default_track_changes_fields
  fields -= Array(track_changes_options[:except]).collect(&:to_s)
  fields += Array(track_changes_options[:methods]).collect(&:to_s)
  fields -= ['created_at', 'updated_at'] unless track_changes_options[:track_timestamps]
  fields -= [primary_key] unless track_changes_options[:track_primary_key]
  fields -= [locking_column] unless track_changes_options[:track_locking_column]

  return fields.uniq
end