ruby on rails - How to get the scoped attributes when creating a new object through a has_many association -

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एक has_many एसोसिएशन जैसे user.first.books.create के माध्यम से ऑब्जेक्ट बनाते समय! (...) , नई किताब को user_id को संघ से स्वचालित रूप से मिलता है।

क्या उस user_id प्राप्त करने का कोई तरीका है? अगर मैं अपनी खुद की विधि बनाने कॉल? I.e. उपयोगकर्ता.first.books.own_create_method 

  def self.own_create_method # उपयोगकर्ता ऑब्जेक्ट कैसे प्राप्त करें?   
 धन्यवाद!   
 
 
  उपयोगकर्ता को परिभाषित करने के लिए प्रथम। पुस्तकें। उपयोग करें / उपयोग करें  आप उपयोग करेंगे: 
 
  def self.own_create_method book = build # कुछ पुस्तक जिसे आप बुक बुक के साथ करना चाहते हैं। सविता एंड  
 
  स्व।  आपको रूबी में वर्ग विधियों को परिभाषित करने की अनुमति देता है।

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