ruby on rails - Save object from form to DB -


मेरे पास एक मॉडल है: 

  वर्ग Scr & lt; ActiveRecord :: बेस डीईएफ़ self.find_scrs लगता है (: सभी,: आदेश = & gt; "आईडी") अंत अंत

देखें (फार्म): 

  & Lt; div class = "scr-form" & gt; & LT; fieldset & gt; & Lt;% form_for: scr,: url = & gt; {: एक्शन = & gt; : Save_scr} करना | फ़ॉर्म | & Gt%; & Lt; p & gt; & Lt; लेबल = "scr_id" & gt; आईडी: & lt; / label & gt; & Lt;% = form.text_field: id,: size = & gt; 40% & gt; & Lt; / p & gt; & Lt; p & gt; & Lt; label = "scr_description" के लिए & gt; विवरण: & lt; / label & gt; & Lt;% = form.text_area: वर्णन,: पंक्तियों = & gt; 3,: cols = & gt; 40% & gt; & Lt; / p & gt; & Lt;% = submit_tag "सहेजें",: वर्ग = & gt; "जमा करें"% & gt; & Lt;% end% & gt; & Lt; / fieldset & gt; & Lt; / div & gt;

और नियंत्रक: 

  वर्ग InboxController & lt; ApplicationController डीईएफ़ सूचकांक @scrs = Scr.find_scrs डीईएफ़ अंत add_scr सिरे डीईएफ़ save_scr @src = Scr.new (पैरामीटर [: scr]) कहते हैं "==================== ========== "@a = params [: scr] कहते हैं @a कहते हैं" ========================== ==== "@ स्रावीस एंड एंड

मैं फॉर्म में फ़ील्ड भरता हूं, सहेजें बटन दबाएं और त्रुटि प्राप्त करें: 

  आपके पास जब आप इसे उम्मीद नहीं की थी, तो शून्य वस्तु! आप ActiveRecord :: Base का उदाहरण हो सकता है जबकि /home/demas/artefacts/dev/study/ruby/rails/tracker/app/controllers/inbox_controller.rb:15:in `save_scr '/usr/lib/ruby/gems/1.9 nil.save का मूल्यांकन त्रुटि उत्पन्न हुई। 1 / रत्न / actionpack-2.3.8 / lib / action_controller / base.rb: 1331: `perform_action 'में /usr/lib/ruby/gems/1.9.1/gems/actionpack-2.3.8/lib/action_controller/filters .rb: 617: `call_filters 'में ... अनुरोध पैरामीटर {" प्रामाणिकता_टोकन "= & gt;" m / QBN85 + 5Kj + Qewtl29mBl5kBtSBr1 + Ixv4jxTq6Rfk = "," scr "= & gt; {" id "= & gt;" के रूप में " , "विवरण" = & gt; "sa"}, "कमिट" = & gt; "सहेजें"}

जैसा कि मैंने देखा है कि रेल एससीआर कक्षा का उदाहरण नहीं बना सकता है। क्यों?

<पूर्व> def save_scr @scr = Scr.new (params [: scr]) कहते हैं "==============================" @a = params [: scr] कहते हैं @a कहते हैं "===== ============================================================== अंत में <
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