CSV在rails中显示奇怪的撇号

Question

我已经在我的rails应用程序中包含了CSV导入功能。但我面临的问题是，如果有任何行业在标题中包含撇号，那么它在CSV中就会显得很奇怪。如何添加meta http-equiv="Content-Type“content="text/html；charset=ISO-8859-1”以便CSV包含撇号。

CSV_HEADER = %w[title role team]



def self.to_csv
      CSV.generate do |csv|
      csv << CSV_HEADER
      all.each do |industry|
      csv << [
        industry.title,        
        industry.role, 
        industry.team
       ]
      end
    end 
 end


<%= link_to "Download CSV", admin_path(@industry, :format => :csv, :filterrific => @filterrific.to_hash), class: "btn btn-primary btn-2x" %>

控制器操作

def application
    require 'csv'

    add_breadcrumb "Admin", :main_admin_path
    add_breadcrumb "Industrial Applications"
    @filterrific = initialize_filterrific(
      Industry,
      params[:filterrific],
      select_options: {
    with_status: Industry.options_for_status
        }
    )   or return   
    @industries = @filterrific.find
    @industries = @industries.paginate(:page => params[:page], :per_page => 10) unless request.format == 'csv' #does pagination if not csv format

    respond_to do |format|
      format.html
      format.js
      format.csv { send_data @industries.to_csv, :type => 'text/csv; charset=iso-8859-1; header=present' }
    end
    rescue ActiveRecord::RecordNotFound => e
        puts "Had to reset filterrific params: #{ e.message }"
        redirect_to(reset_filterrific_url(format: :html)) and return            
end

Answer 1

BOM(字节顺序标记)的概念被用来解决这个问题。

format.csv { send_data "\uFEFF" + @industries.to_csv, type: :csv }