Class: ActiveData::Attributes::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/active_data/attributes/base.rb

Direct Known Subclasses

Localized

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, options = {}, &block) ⇒ Base

Returns a new instance of Base.



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# File 'lib/active_data/attributes/base.rb', line 6

def initialize name, options = {}, &block
  @name = name.to_sym
  @options = options
  @options[:default] = block if block
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/active_data/attributes/base.rb', line 4

def name
  @name
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/active_data/attributes/base.rb', line 4

def options
  @options
end

Instance Method Details

#default ⇒ Object 



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# File 'lib/active_data/attributes/base.rb', line 20

def default
  @default ||= @options[:default]
end

#default_blank? ⇒ Boolean

Returns:



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# File 'lib/active_data/attributes/base.rb', line 24

def default_blank?
  @default_blank ||= !!@options[:default_blank]
end

#default_value(instance) ⇒ Object 



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# File 'lib/active_data/attributes/base.rb', line 28

def default_value instance
  default.respond_to?(:call) ? default.call(instance) : default unless default.nil?
end

#generate_class_methods(context) ⇒ Object 



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# File 'lib/active_data/attributes/base.rb', line 57

def generate_class_methods context
  if values
    context.class_eval <<-EOS
      def #{name}_values
        _attributes[:#{name}].values
      end
    EOS
  end
end

#generate_instance_methods(context) ⇒ Object 



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# File 'lib/active_data/attributes/base.rb', line 37

def generate_instance_methods context
  context.class_eval <<-EOS
    def #{name}
      read_attribute(:#{name})
    end

    def #{name}= value
      write_attribute(:#{name}, value)
    end

    def #{name}?
      read_attribute(:#{name}).present?
    end

    def #{name}_before_type_cast
      read_attribute_before_type_cast(:#{name})
    end
  EOS
end

#type ⇒ Object 



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# File 'lib/active_data/attributes/base.rb', line 12

def type
  @type ||= options[:type] || Object
end

#type_cast(value) ⇒ Object 



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# File 'lib/active_data/attributes/base.rb', line 32

def type_cast value
  return value if value.instance_of?(type)
  type.active_data_type_cast(value)
end

#values ⇒ Object 



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# File 'lib/active_data/attributes/base.rb', line 16

def values
  @values ||= options[:in].dup if options[:in]
end