錯誤而進口在軌道上

Question

使用袋鼠寶石紅寶石.xlsx文件，我得到了以下錯誤：

NoMethodError in ClientsController#table 
undefined method `phone' for nil:NilClass 

這當我嘗試，.xls的或.csv文件導入到的.xlsx Ruby on Rails的應用程序中發生。下面

型號代碼給出：

attr_accessible :name, :kind, :address_attributes, :emails_attributes, :phones_attributes, :attachments_attributes 

    def self.import(file) 
    spreadsheet = open_spreadsheet(file) 
    header = spreadsheet.row(1) 
    (2..spreadsheet.last_row).each do |i| 
     row = Hash[[header, spreadsheet.row(i)].transpose] 
     client = find_by_id(row["id"]) || new 
     client.attributes = row.to_hash.slice(*accessible_attributes) 
     client.save! 
    end 
    end 

    def self.open_spreadsheet(file) 
    case File.extname(file.original_filename) 
     when '.csv' then Roo::Csv.new(file.path) 
     when '.xls' then Roo::Excel.new(file.path) 
     when '.xlsx' then Roo::Excelx.new(file.path) 
    else 
     raise "Unknown file type: #{file.original_filename}" 
    end 
    end 

控制器代碼如下給出：

def import 
    Client.import(params[:file]) 
    redirect_to clients_path, notice: "Clients imported." 
    end 

應用/服務/配置/ application.rb中文件包括以下代碼：

require 'csv' 
require 'iconv' 

寶石文件包括以下內容：

gem 'roo', '~> 2.1.0' 
gem "iconv", "~> 1.0.3" 
gem 'roo-xls' 

Answer 1

我認爲你應該使用這個語法袋鼠寶石：

def self.open_spreadsheet(file) 
    case File.extname(file.original_filename) 
    when ".csv" then Roo::CSV.new(file.path, nil, :ignore) 
    when ".xls" then Roo::Excel.new(file.path, nil, :ignore) 
    when ".xlsx" then Roo::Excelx.new(file.path, nil, :ignore) 
    else 
    raise "Unknown file type: #{file.original_filename}" 
    end 
end