Class: Rebalance::Fund

Inherits:
Object
  • Object
show all
Defined in:
lib/rebalance/fund.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(symbol, asset_class, shares, price = nil) ⇒ Fund

Returns a new instance of Fund.



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# File 'lib/rebalance/fund.rb', line 8

def initialize(symbol, asset_class, shares, price=nil)
  self.symbol      = symbol
  self.asset_class = asset_class
  self.shares      = shares

  # Lookup value if not passed in
  if price.nil?
    price = get_fund_price(symbol)
  end

  self.price = price
end

Instance Attribute Details

#asset_class ⇒ Object

Returns the value of attribute asset_class.



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# File 'lib/rebalance/fund.rb', line 6

def asset_class
  @asset_class
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/rebalance/fund.rb', line 6

def name
  @name
end

#price ⇒ Object

Returns the value of attribute price.



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# File 'lib/rebalance/fund.rb', line 6

def price
  @price
end

#shares ⇒ Object

Returns the value of attribute shares.



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# File 'lib/rebalance/fund.rb', line 6

def shares
  @shares
end

#symbol ⇒ Object

Returns the value of attribute symbol.



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# File 'lib/rebalance/fund.rb', line 6

def symbol
  @symbol
end

Instance Method Details

#get_fund_price(symbol) ⇒ Object 



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# File 'lib/rebalance/fund.rb', line 21

def get_fund_price(symbol)
  yql_url = "http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.quotes%20where%20symbol%20in%20(%22#{symbol}%22)&env=store://datatables.org/alltableswithkeys&format=json"
  response = open(yql_url)
  parsed_response = JSON.parse(response.read)

  if !parsed_response['query']['results']['quote']['ErrorIndicationreturnedforsymbolchangedinvalid'].nil?
    raise "The symbol #{symbol} can't be found"
  end

  price = parsed_response['query']['results']['quote']['LastTradePriceOnly']
  price = price.to_f

  # Cash funds don't always return a price, so just assume $1.00
  if asset_class == "Cash"
    price = 1.00
  end

  price
end

#value ⇒ Object 



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# File 'lib/rebalance/fund.rb', line 41

def value
  (price * shares).round(2)
end