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Contents
module ActiveRecordCloning
def self.included(base)
base.extend(ClassMethods)
end
module ClassMethods
def inherited(subclass)
super
subclass.cloned_attributes_hash = cloned_attributes_hash
end
def attributes_included_in_cloning
cloned_attributes_hash[:include].dup
end
def attributes_excluded_from_cloning
cloned_attributes_hash[:exclude].dup
end
def clones_attributes(*attributes)
cloned_attributes_hash[:include] = attributes.map(&:to_sym)
end
def clones_attributes_except(*attributes)
cloned_attributes_hash[:exclude] = attributes.map(&:to_sym)
end
def clones_attributes_reset
@cloned_attributes = nil
end
def exclude_attributes(cloned, excludes)
excluded_attributes(excludes).each do |attr|
cloned.send("#{attr}=", nil)
end
end
def excluded_attributes(excludes)
all_attributes = attribute_names.map(&:to_sym)
included_attributes = if attributes_included_in_cloning.empty?
all_attributes
else
all_attributes & attributes_included_in_cloning
end
all_attributes - included_attributes + attributes_excluded_from_cloning + excludes
end
protected
def cloned_attributes_hash
@cloned_attributes ||= {:include => [], :exclude => []}
end
def cloned_attributes_hash=(attributes_hash)
@cloned_attributes = attributes_hash
end
end
def clone_excluding(excludes=[])
method = ActiveRecord::Base.instance_methods(false).include?(:clone) ? :clone : :dup
cloned = send(method)
excludes ||= []
excludes = [excludes] unless excludes.is_a?(Enumerable)
self.class.exclude_attributes(cloned, excludes)
cloned
end
end
Version data entries
17 entries across 17 versions & 1 rubygems