Module: Traits::Model::STI

Included in:
Traits::Model
Defined in:
lib/traits/concerns/model/sti.rb

Instance Method Summary collapse

Instance Method Details

#sti_attribute_name ⇒ Object 



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# File 'lib/traits/concerns/model/sti.rb', line 18

def sti_attribute_name
  model_class.inheritance_column.to_sym
end

#sti_base? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/traits/concerns/model/sti.rb', line 8

def sti_base?
  model_class.descends_from_active_record? && model_class.subclasses.any? do |subclass|
    subclass.superclass == model_class
  end
end

#sti_chain ⇒ Object 



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# File 'lib/traits/concerns/model/sti.rb', line 22

def sti_chain
  model_class = self.model_class
  chain       = [model_class]
  until model_class.superclass == ActiveRecord::Base do
    model_class = model_class.superclass
    chain.unshift(model_class)
  end
  chain
end

#sti_derived? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/traits/concerns/model/sti.rb', line 14

def sti_derived?
  !model_class.descends_from_active_record?
end

#to_hash ⇒ Object 



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# File 'lib/traits/concerns/model/sti.rb', line 32

def to_hash
  super.merge!(
    sti_base:           sti_base?,
    sti_derived:        sti_derived?,
    sti_attribute_name: sti_attribute_name
  )
end

#uses_sti? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/traits/concerns/model/sti.rb', line 4

def uses_sti?
  sti_base? || sti_derived?
end