Rails 4 - scope with has_one instead of attribute -


मेरे पास निम्न दो मॉडल हैं: 

  वर्ग व्यक्ति & lt; ActiveRecord :: बेस है_ऑन: संग्रह, आश्रित = & gt; : नष्ट क्लास संग्रह & lt; ActiveRecord :: बेस is_to: व्यक्ति   
  संग्रह  होल्ड  person_id ।  
 मुझे एक गुंजाइश < कोड> Person.with_archive । चूंकि  व्यक्ति  के पास  archive_id  का कोई भी डीबी स्तंभ नहीं है, इसलिए मैंने पाया कि एकमात्र उपाय है:  
  def self.has_archive res = Array.new self .all.each do | i | रिज & लेफ्टिनेंट; & lt; मैं अगर! I.archive.nil? एंड रिज़ एंड   
 समस्या यह है कि मुझे रिश्ते के बजाय एक अर्रे मिलती है, जो मुझे अन्य स्कोप श्रृंखला के लिए सीमित करता है  
 उस के लिए कोई भी अच्छा और साफ समाधान ?? धन्यवाद!   
 
 
 इसे आज़माएं:  
  गुंजाइश: with_archive, - & gt ; {Joins (: archive)}   
 यह केवल एक संग्रह के साथ ही व्यक्ति को वापस करना चाहिए, क्योंकि  शामिल होता है  एक  INNER JOIN  statement का उपयोग करता है

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