Question

我正在向在线订购应用中添加导入CSV，之前的问题包括ROR import csv file no method error，Adding CSV Import to a ROR application。感谢那些在其他问题上提供帮助的人。

错误：

NoMethodError (undefined method `build_from_csv' for #<Class:0x9ddd82c>):
   app/controllers/imports_controller.rb:14:in `block in imports'
   /usr/local/ruby/lib/ruby/1.9.1/csv.rb:1761:in `each'
   /usr/local/ruby/lib/ruby/1.9.1/csv.rb:1370:in `parse'
   app/controllers/imports_controller.rb:10:in `imports'

imports_controller：

require 'csv'
class ImportsController < ApplicationController    

def imports
logger.info "File loaded"
infile = params[:dump][:infile].read

n, errors = 0, []
@archive = []
CSV.parse(infile) do |row|
  n += 1
  # SKIP: header i.e. first row OR blank row
  next if n == 1 or row.join.blank?
  imports = Order.build_from_csv(row)
  if imports.valid?
    imports.save
    @archive << row
  else
    errors << row
  end
end
logger.info errors
flash[:success] = "The CSV imported successfully" 

respond_to do |format|
  format.html # index.html.erb
  format.json { render :json => @archive }
  end
end

最初我有一个models / imports.rb，但我把它移到models / order.rb，因为我试图将csv日期添加到该表：

 def self.build_from_csv(row)
      #last_level = (row[5].downcase == "yes"
     orders = Orders.new(:imports => "#{row[0]}}",
                            :cart_items => "#{row[1]}",
                            :cart_items_quantity => "#{row[2]}",
                            :cart_items_price => "#{row[3]}",
                            :cart_items_description => "#{row[4]}",
                            :cart_items_upc => "#{row[5]}",
                            :cart_items_sku => "#{row[6]}")
                           # :last_level=> last_level)
           return imports
 end

表示错误行：

imports = Order.build_from_csv(row)

我试过了

imports = Imports.build_from_csv(row)

我使用了Order，因为那是购物车项目插入但没有运气的表格。我也尝试过：

imports = CSV.build_from_csv(row)

...

imports = Infile.build_from_csv(row)

并且导致了未初始化的常量。我愿意接受其他尝试的建议，再次感谢您的帮助！

ROR import csv文件：未定义的方法

0 个答案: