mysql - main :Object (NameError) 的未定义局部变量或方法 `category'

Question

require 'csv'
    load 'dbconnection.rb'
    require 'activerecord'

    class Definition<ActiveRecord::Base

    end
    csv_definition = File.read('C:/definition.csv')
    spy_definition = CSV.parse(csv_definition, :headers => false)
    spy_definition.each do |row|
          Definition.create!(

                            :id => row[id],
                            :category => row[category],
                            :name => row[name],
                            :dangerlevel => [dangerlevel],
                            :description => [description]
                            )       

                    end

我收到如下错误:

datainsertion.rb:26: warning: Object#id will be deprecated; use Object#object_id
datainsertion.rb:27: undefined local variable or method `category' for main:Object (NameError)
    from datainsertion.rb:24:in `each'
    from datainsertion.rb:24
>Exit code: 1

我需要将该 csv 文件加载到数据库中，但我收到此错误..，帮我解决这个问题。，

Answer 1

错误确实是您所需要的。您有一个尚 undefined variable 类别。尝试“类别”。