Module: GL::Contract::ClassMethods

Defined in:
lib/gl/command/contract.rb

Instance Method Summary collapse

Instance Method Details

#allows(*attributes, **strong_attributes) ⇒ Object 



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# File 'lib/gl/command/contract.rb', line 16

def allows(*attributes, **strong_attributes)
  delegate(*attributes, to: :context)
  return if strong_attributes.blank?

  delegate(*strong_attributes.keys, to: :context)
  enforce_attribute_types(**strong_attributes)
end

#enforce_attribute_presence(*attributes) ⇒ Object 



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# File 'lib/gl/command/contract.rb', line 55

def enforce_attribute_presence(*attributes)
  validates(*attributes, presence: true) if attributes.present?
end

#enforce_attribute_types(**attributes) ⇒ Object 



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# File 'lib/gl/command/contract.rb', line 59

def enforce_attribute_types(**attributes)
  return if attributes.blank?

  validates_each attributes.keys do |record, attr_name, value|
    next if value.blank?

    type = attributes[attr_name]
    record.errors.add attr_name, "does is not a #{type}" unless type_applies?(value, type)
  end
end

#requires(*attributes, **strong_attributes) ⇒ Object 



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# File 'lib/gl/command/contract.rb', line 24

def requires(*attributes, **strong_attributes)
  requires_attributes(*attributes)
  requires_strong_attributes(**strong_attributes)
end

#requires_attributes(*attributes) ⇒ Object 



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# File 'lib/gl/command/contract.rb', line 29

def requires_attributes(*attributes)
  return if attributes.blank?

  delegate(*attributes, to: :context)
  enforce_attribute_presence(*attributes)
end

#requires_strong_attributes(**attributes) ⇒ Object 



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# File 'lib/gl/command/contract.rb', line 36

def requires_strong_attributes(**attributes)
  return if attributes.blank?

  attribute_keys = attributes.keys
  requires_attributes(*attribute_keys)
  enforce_attribute_types(**attributes)
end

#returns(*attributes, **strong_attributes) ⇒ Object 



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# File 'lib/gl/command/contract.rb', line 44

def returns(*attributes, **strong_attributes)
  delegate(*attributes, to: :context)
  @return_attributes = attributes
  return if strong_attributes.blank?

  strong_attribute_keys = strong_attributes.keys
  delegate(*strong_attribute_keys, to: :context)
  @return_attributes.concat(strong_attribute_keys)
  @return_strong_attributes = strong_attributes
end