Class: Alba::TypedAttribute Private

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

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Representing typed attributes to encapsulate logic about types

API:

  • private

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name:, type:, converter:, &block) ⇒ TypedAttribute

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of TypedAttribute.

Parameters:

API:

  • private



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# File 'lib/alba/typed_attribute.rb', line 12

def initialize(name:, type:, converter:, &block)
  @name = name
  t = Alba.find_type(type)
  @type = case converter
          when true then t.dup.tap { _1.auto_convert = true }
          when false, nil then t
          else
            t.dup.tap { _1.auto_convert_with(converter) }
          end
  @block = block
end

Instance Attribute Details

#name ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



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# File 'lib/alba/typed_attribute.rb', line 7

def name
  @name
end

Instance Method Details

#value(object: nil) ⇒ String, ...

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns type-checked or type-converted object.

Returns:

  • type-checked or type-converted object

API:

  • private



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# File 'lib/alba/typed_attribute.rb', line 25

def value(object: nil)
  v = @block ? @block.call(object) : yield(@name)
  result = @type.check(v)
  result ? v : @type.convert(v)
rescue TypeError
  raise TypeError, "Attribute #{@name} is expected to be #{@type.name} but actually #{display_value_for(v)}."
end