Class: Sequel::Plugins::DeepDup::DeepDupper

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(instance, omit = []) ⇒ DeepDupper

Returns a new instance of DeepDupper.



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# File 'lib/sequel_deep_dup.rb', line 10

def initialize instance, omit = []
  @instance     = instance
  @omit_records = omit
end

Instance Attribute Details

#instance ⇒ Object (readonly)

Returns the value of attribute instance.



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# File 'lib/sequel_deep_dup.rb', line 8

def instance
  @instance
end

#omit_records ⇒ Object (readonly)

Returns the value of attribute omit_records.



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# File 'lib/sequel_deep_dup.rb', line 8

def omit_records
  @omit_records
end

Instance Method Details

#dup ⇒ Object 



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# File 'lib/sequel_deep_dup.rb', line 22

def dup
  copy = shallow_dup.extend(InstanceHooks::InstanceMethods)
  omit_records << instance
  dup_associations(instance, copy, instance.class.associations)
  copy
end

#dup_associations(instance, copy, associations) ⇒ Object 



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# File 'lib/sequel_deep_dup.rb', line 15

def dup_associations instance, copy, associations
  associations.each do |name|
    next unless refl = instance.class.association_reflection(name)
    [*instance.send(name)].compact.each { |rec| instantiate_associated(copy, refl, rec) }
  end
end

#shallow_dup ⇒ Object 



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# File 'lib/sequel_deep_dup.rb', line 29

def shallow_dup
  klass      = instance.class
  attributes = instance.to_hash.dup
  [*klass.primary_key].each { |attr| attributes.delete(attr) }
  klass.new attributes
end