Module: GoGoodreads::Attributes::ClassMethods

Defined in:
lib/go_goodreads/attributes.rb

Instance Method Summary collapse

Instance Method Details

#attribute(name, opts = {}) ⇒ Object

Parameters:

  • name (Symbol) —

    the name of the attribute

  • opts (Hash) (defaults to: {}) —

    the options to configure the attribute

Options Hash (opts):

  • :type (Class) —

    the class of the parsed value of the attribute

  • :using (Proc) —

    a proc object to be used when finding the value in an xml node

  • :map_from (Symbol) —

    a symbol where the value is placed when calling to_attributes!



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# File 'lib/go_goodreads/attributes.rb', line 14

def attribute(name, opts = {})
  default_options = { :type => String, :map_from => name }
  setting = default_options.merge(opts)
  setting[:using] ||= lambda {|xml, from| (xml > from.to_s).text }
  @attributes ||= {}
  @attributes[name] = setting
  attr name
end

#Boolean(val) ⇒ Object 



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# File 'lib/go_goodreads/attributes.rb', line 41

def Boolean(val)
  {"true" => true, "false" => false}[val]
end

#to_attributes!(xml, options = {}) ⇒ Object

Parameters:

  • xml (Nokogiri::Node) —

    the xml to be used in getting the attributes

  • options (Hash) (defaults to: {}) —

    settings for overriding default attribute configuration (key is the name of the attribute, value is the options hash)



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# File 'lib/go_goodreads/attributes.rb', line 25

def to_attributes!(xml, options = {})
  attrs = {}

  @attributes.each do |attr, config|
    opts = config.merge(options[attr] || {})
    map_from = opts[:map_from]
    callable = opts[:using]
    val = callable.call(xml, map_from)
    unless val.to_s.empty?
      attrs[attr] = _convert(val, opts[:type]) rescue val
    end
  end

  attrs
end