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module ActiveModel::Attributes::ClassMethods

Public Instance Methods

attribute(name, cast_type = nil, default: NO_DEFAULT_PROVIDED, **options) Show source

# File activemodel/lib/active_model/attributes.rb, line 19
def attribute(name, cast_type = nil, default: NO_DEFAULT_PROVIDED, **options)
  name = name.to_s

  cast_type = Type.lookup(cast_type, **options) if Symbol === cast_type
  cast_type ||= attribute_types[name]

  self.attribute_types = attribute_types.merge(name => cast_type)
  define_default_attribute(name, default, cast_type)
  define_attribute_method(name)
end

attribute_names() Show source

# File activemodel/lib/active_model/attributes.rb, line 41
def attribute_names
  attribute_types.keys
end

Returns an array of attribute names as strings

class Person
  include ActiveModel::Attributes

  attribute :name, :string
  attribute :age, :integer
end

Person.attribute_names
# => ["name", "age"]