radio button - Rails form_for radio_button "Can't be blank" -

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मेरे पास निम्न कोड है: 

  & lt;% form_for (@libation) करें | च | & Gt%; & Lt;% = f.radio_button: कार्बोनेटेड, सही% & gt; & Lt;% = f.label: कार्बोनेटेड, "हां"% & gt; & Lt;% = f.radio_button: कार्बोनेटेड, झूठी% & gt; & Lt;% = f.label: कार्बोनेटेड, "नहीं"% & gt; & Lt;% end% & gt;

डेटाबेस में कार्बोनेटेड कॉलम प्रकार है टिनिंट ।
और जब ऊपर चल रहा है और मैं नहीं मुझे एक बड़ी लाल बक्से मिल रही है:

<पूर्व> 1 त्रुटि इस लिबंदी को सहेजने से प्रतिबंधित कर दी गई है निम्नलिखित फ़ील्ड के साथ समस्याएं थीं: * कार्बनयुक्त रिक्त नहीं हो सकता

कोई भी विचार?
-थांक्स

मुझे समस्याएं हैं एक बूलियन मान की मान्यता, इसलिए मैंने उनकी मौजूदगी को सत्यापित करने के लिए आपको सीखा है: 

  validates_inclusion_of: कार्बोनेटेड,: में = & gt; [सच, झूठे]

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