Module: Fog::Attributes::ClassMethods

Included in:
Collection, Model
Defined in:
lib/fog/attributes.rb

Instance Method Summary collapse

Instance Method Details

#_load(marshalled) ⇒ Object 



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# File 'lib/fog/attributes.rb', line 5

def _load(marshalled)
  new(Marshal.load(marshalled))
end

#aliases ⇒ Object 



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# File 'lib/fog/attributes.rb', line 9

def aliases
  @aliases ||= {}
end

#attribute(name, options = {}) ⇒ Object 



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# File 'lib/fog/attributes.rb', line 17

def attribute(name, options = {})
  # FIXME: handle legacy where options would have been one or more aliases
  if !options.is_a?(Hash)
    options = {:aliases => options}
  end
  class_eval <<-EOS, __FILE__, __LINE__
    attr_reader :#{name}
  EOS
  case options[:type]
  when :boolean
    class_eval <<-EOS, __FILE__, __LINE__
      def #{name}=(new_#{name})
        @#{name} = case new_#{name}
        when 'true'
          true
        when 'false'
          false
        end
      end
    EOS
  when :float
    class_eval <<-EOS, __FILE__, __LINE__
      def #{name}=(new_#{name})
        @#{name} = new_#{name}.to_f
      end
    EOS
  when :integer
    class_eval <<-EOS, __FILE__, __LINE__
      def #{name}=(new_#{name})
        @#{name} = new_#{name}.to_i
      end
    EOS
  when :string
    class_eval <<-EOS, __FILE__, __LINE__
      def #{name}=(new_#{name})
        @#{name} = new_#{name}.to_s
      end
    EOS
  when :time
    class_eval <<-EOS, __FILE__, __LINE__
      def #{name}=(new_#{name})
        if !new_#{name}.is_a?(Time)
          @#{name} = Time.parse(new_#{name})
        else
          @#{name} = new_#{name}
        end
      end
    EOS
  when :array
    class_eval <<-EOS, __FILE__, __LINE__
    def #{name}=(new_#{name})
      @#{name} = if new_#{name}.is_a?(Array)
        new_#{name}
      else
        @#{name} = [ new_#{name} ]
      end
    end
    EOS
  else
    if squash = options[:squash]
      class_eval <<-EOS, __FILE__, __LINE__
        def #{name}=(new_data)
          if new_data.is_a?(Hash)
            if new_data[:#{squash}]
              @#{name} = new_data[:#{squash}]
            else
              @#{name} = [ new_data ]
            end
          else
            @#{name} = new_data
          end
        end
      EOS
    else
      class_eval <<-EOS, __FILE__, __LINE__
        attr_writer :#{name}
      EOS
    end
  end
  @attributes ||= []
  @attributes |= [name]
  for new_alias in [*options[:aliases]]
    aliases[new_alias] = name
  end
end

#attributes ⇒ Object 



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# File 'lib/fog/attributes.rb', line 13

def attributes
  @attributes ||= []
end

#identity(name, other_names = []) ⇒ Object 



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# File 'lib/fog/attributes.rb', line 103

def identity(name, other_names = [])
  @identity = name
  self.attribute(name, {:aliases => other_names})
end

#ignore_attributes(*args) ⇒ Object 



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# File 'lib/fog/attributes.rb', line 108

def ignore_attributes(*args)
  @ignored_attributes = args
end

#ignored_attributes ⇒ Object 



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# File 'lib/fog/attributes.rb', line 112

def ignored_attributes
  @ignored_attributes ||= []
end