Question

目标：我想将ruby哈希导出为CSV

挑战：我一直收到错误：＆＃39;未定义的方法`to_csv＆＃39;为＃你的意思？ to_s＆＃39 ;.

方法：我正在调用Stripe，接收JSON，对数据进行排序，最后得到这样的哈希：

{"33"=>{:name=>"John Doe", :currency=>"eur", :total=>18748}, "31"=>{:name=>"Jane Doe", :currency=>"eur", :total=>7222}}

理想情况下，我想将该哈希导出为CSV，以便将其导入Excel或Google表格。

Recurring_revenue.html.slim：

= link_to 'Download CSV', recurring_revenue_path(format: 'csv'), class: 'btn btn-success'

页面控制器：

@invoices = Stripe::Invoice.list(
  paid: true,
  expand: ['data.subscription'],
  limit: 100,
  date: {
    gte: params[:start_date],
    lte: params[:end_date]
  }
)

@coaches = {}

@invoices.auto_paging_each do |invoice|

  @coaches[invoice.subscription.metadata.coach_id] ||= {
    name: invoice.subscription.metadata.coach,
    currency: invoice.subscription.plan.currency,
    total: 0
  }

  @coaches[invoice.subscription.metadata.coach_id][:total] ||= 0
  @coaches[invoice.subscription.metadata.coach_id][:total] += invoice.total
end

respond_to do |format|
  format.html
  format.csv { send_data(@coaches.to_csv) }  
end

Page.rb

class Page < ApplicationRecord
  def self.to_csv
    attributes = %w{id email name}

    CSV.generate(headers: true) do |csv|
      csv << attributes

      all.each do |user|
        csv << attributes.map{ |attr| user.send(attr) }
      end
    end
  end
end

我在application.rb中添加了include "csv"。任何人都可以看看，让我知道我做错了什么？

将Ruby Hash导出为CSV

0 个答案: