我正在尝试将数据导出到excel文档并且一直关注railscast 362但是我收到了错误。我似乎遇到的主要问题是之前的广告系列没有模型文件，而是观察者文件。当我创建一个活动模型文件时，会发生与页面上的搜索范围搜索功能相关的错误，但是当我再次删除活动模型文件时，不会发生这些错误。任何人都可以解释这个差异，以及为什么我会收到这个错误。
Controller：campaigns_controller.rb
def index
@search = Campaign.search(params[:q])
@campaigns = @search.result.page(params[:page]||1)
if params[:sort]
@my_campaigns = Campaign.active
@campaigns = @my_campaigns
@campaigns = @campaigns.order(sort_column + " " + sort_direction).page(params[:page]||1)
end
respond_to do |format|
format.html
format.csv { send_data @campaigns.to_csv }
format.xls
end
end
型号：campaign.rb
class Campaign < ActiveRecord::Base
def self.to_csv(options = {})
CSV.generate(options) do |csv|
csv << column_names
all.each do |product|
csv << product.attributes.values_at(*column_names)
end
end
end
end
查看链接
= link_to '<i class="glyphicon glyphicon-cloud-download"></i>'.html_safe, admin_campaigns_path(format: "csv"), title: "Download Campaign XLS", rel: 'tooltip'
= link_to '<i class="glyphicon glyphicon-cloud-download"></i>'.html_safe, admin_campaigns_path(format: "xls"), title: "Download Campaign XLS", rel: 'tooltip'
完整追踪
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