Module: ModelAttribute

Defined in:
lib/model_attribute.rb,
lib/model_attribute/casts.rb,
lib/model_attribute/errors.rb,
lib/model_attribute/version.rb

Defined Under Namespace

Modules: Casts, InstanceMethods Classes: InvalidAttributeNameError, UnsupportedTypeError

Constant Summary collapse

SUPPORTED_TYPES = 
[:integer, :boolean, :string, :time, :json]
VERSION = 
"3.1.1"

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(base) ⇒ Object 



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# File 'lib/model_attribute.rb', line 9

def self.extended(base)
  base.send(:include, InstanceMethods)
  base.instance_variable_set('@attribute_names',    [])
  base.instance_variable_set('@attribute_types',    {})
  base.instance_variable_set('@attribute_defaults', {})
end

Instance Method Details

#attribute(name, type, opts = {}) ⇒ Object

Raises:



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# File 'lib/model_attribute.rb', line 16

def attribute(name, type, opts = {})
  name = name.to_sym
  type = type.to_sym
  raise UnsupportedTypeError.new(type) unless SUPPORTED_TYPES.include?(type)

  @attribute_names          << name
  @attribute_types[name]    = type
  @attribute_defaults[name] = opts[:default] if opts.key?(:default)

  self.class_eval("    def \#{name}=(value)\n      write_attribute(\#{name.inspect}, value, \#{type.inspect})\n    end\n\n    def \#{name}\n      read_attribute(\#{name.inspect})\n    end\n\n    def \#{name}_changed?\n      !!changes[\#{name.inspect}]\n    end\n  CODE\n\n  if type == :boolean\n    self.class_eval(<<-CODE, __FILE__, __LINE__ + 1)\n      def \#{name}?\n        !!read_attribute(\#{name.inspect})\n      end\n    CODE\n  end\nend\n", __FILE__, __LINE__ + 1)

#attribute_defaults ⇒ Object 



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# File 'lib/model_attribute.rb', line 52

def attribute_defaults
  @attribute_defaults
end

#attributes ⇒ Object 



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# File 'lib/model_attribute.rb', line 48

def attributes
  @attribute_names
end