रेल प्रवास ड्रॉप झरना railsguides

कोड उदाहरण

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रेल ग्राम प्रवास कॉलम जोड़ें

$ rails generate migration AddDetailsToProducts part_number:string price:decimal
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कैसे बनाने के लिए माइग्रेशन रेल

rails g migration AddPartNumberToProducts

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