Module: ClassKit

Defined in:
lib/class_kit/helper.rb,
lib/class_kit/version.rb,
lib/class_kit/value_helper.rb,
lib/class_kit/class_methods.rb,
lib/class_kit/attribute_helper.rb,
lib/class_kit/exceptions/invalid_class_error.rb,
lib/class_kit/exceptions/attribute_not_found_error.rb,
lib/class_kit/exceptions/invalid_parse_value_error.rb,
lib/class_kit/exceptions/invalid_attribute_value_error.rb

Defined Under Namespace

Modules: Exceptions Classes: AttributeHelper, Helper, ValueHelper

Constant Summary collapse

VERSION = 
"0.2.1"

Instance Method Summary collapse

Instance Method Details

#attr_accessor_type(name, type: nil, collection_type: nil, allow_nil: true, default: nil, auto_init: false, meta: {}) ⇒ Object 



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# File 'lib/class_kit/class_methods.rb', line 2

def attr_accessor_type(name, type: nil, collection_type: nil, allow_nil: true, default: nil, auto_init: false, meta: {})

  if !self.class_variable_defined?(:@@class_kit_attributes)
    self.class_variable_set(:@@class_kit_attributes, [])
  end

  if !self.class_variable_defined?(:@@is_class_kit_class)
    self.class_variable_set(:@@is_class_kit_class, true)
  end

  attributes = self.class_variable_get(:@@class_kit_attributes)
  attributes.push({ name: name, type: type, collection_type: collection_type, allow_nil: allow_nil, default: default, auto_init: auto_init, meta: meta })
  self.class_variable_set(:@@class_kit_attributes, attributes)

  self.class_eval do
    define_method name do

      cka = self.class.class_variable_get(:@@class_kit_attributes).detect { |i| i[:name] == name }

      if eval("@#{name}") == nil && cka[:default] != nil
        eval("@#{name}=cka[:default]")
      end

      if eval("@#{name}") == nil && cka[:auto_init] == true
        eval("@#{name}=cka[:type].new")
      end

      return eval("@#{name}")
    end
  end

  self.class_eval do
    define_method "#{name}=" do |value|

      #get the attribute meta data
      cka = self.class.class_variable_get(:@@class_kit_attributes).detect { |i| i[:name] == name }

      #verify if the attribute is allowed to be set to nil
      if value == nil && cka[:allow_nil] == false
        raise ClassKit::Exceptions::InvalidAttributeValueError.new("Attribute: #{name}, must not be nil.")
      end

      #check if the value being set is not of the specified type and should attempt to parse the value
      if cka[:type] != nil && value != nil && (cka[:type] == :bool || !value.is_a?(cka[:type]))
        begin
          value = ClassKit::ValueHelper.instance.parse(type: cka[:type], value: value)
        rescue => e
          raise ClassKit::Exceptions::InvalidAttributeValueError.new("Attribute: #{name}, must be of type: #{cka[:type]}. Error: #{e}")
        end
      end

      eval("@#{name}=value")
    end
  end

end