Module: JSONMapper::ClassMethods

Defined in:
lib/json_mapper.rb

Instance Method Summary collapse

Instance Method Details

#attributes ⇒ Object 



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# File 'lib/json_mapper.rb', line 36

def attributes
  @attributes[to_s] || []
end

#json_attribute(name, *args) ⇒ Object 



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# File 'lib/json_mapper.rb', line 14

def json_attribute(name, *args)

  source_attributes, type = extract_attribute_data(name, *args)
  attribute = Attribute.new(name, source_attributes, type)
  @attributes[to_s] ||= []
  @attributes[to_s] << attribute

  attr_accessor attribute.method_name.to_sym

end

#json_attributes(name, *args) ⇒ Object 



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# File 'lib/json_mapper.rb', line 25

def json_attributes(name, *args)

  source_attributes, type = extract_attribute_data(name, *args)
  attribute = AttributeList.new(name, source_attributes, type)
  @attributes[to_s] ||= []
  @attributes[to_s] << attribute

  attr_accessor attribute.method_name.to_sym

end

#parse(data) ⇒ Object 



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# File 'lib/json_mapper.rb', line 40

def parse(data)

  # Parse the data into a hash
  json = JSON.parse(data, { :symbolize_names => true })

  # Parse the JSON data structure
  parse_json(json)

end

#parse_json(json) ⇒ Object 



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# File 'lib/json_mapper.rb', line 50

def parse_json(json)
  
  # Create a new instance of ourselves
  instance = new

  # Instantiate all AttributeList instances
  attributes.each do |attribute|
    if attribute.is_a?(AttributeList)
      instance.send("#{attribute.name}=", attribute.dup)
    end
  end

  # Traverse all defined attributes and assign data from the
  # JSON data structure
  attributes.each do |attribute|
    if is_mapped?(attribute, json)
      value = mapping_value(attribute, json)
      if attribute.is_a?(AttributeList)
        value = [ value ] unless value.is_a?(Array)
        value.each do |v|
          instance.send("#{attribute.name}") << build_attribute(attribute.name, attribute.type).typecast(v)
        end
      else
        instance.send("#{attribute.name}=".to_sym, attribute.typecast(value))
      end
    end
  end

  instance

end