change student_works export pdf

app/controllers/student_works_controller.rb

@@ -524,11 +524,16 @@ class StudentWorksController < ApplicationController
     @echart_data = student_efficiency(@homework, @work)
     @myself_eff = @echart_data[:efficiency_list].find { |item| item.last == @user.id }
     @myself_consume = @echart_data[:consume_list].find { |item| item.last == @user.id }
-
     filename_ = "#{@use&.student_id}_#{@use&.real_name}_#{@shixun&.name}_#{Time.now.strftime('%Y%m%d_%H%M%S')}"
     filename = Base64.urlsafe_encode64(filename_.strip)
     stylesheets = %w(shixun_work/shixun_work.css shared/codemirror.css)
-    render pdf: 'shixun_work/shixun_work', filename: filename, stylesheets: stylesheets, disposition: 'inline', type:"pdf_attachment.content_type",stream:false
+    if params[:export].present? && params[:export]
+      normal_status(0,"正在下载中")
+    else
+      set_export_cookies
+      render pdf: 'shixun_work/shixun_work', filename: filename, stylesheets: stylesheets, disposition: 'inline', type:"pdf_attachment.content_type",stream:false
+    end
+    # render pdf: 'shixun_work/shixun_work', filename: filename, stylesheets: stylesheets, disposition: 'inline', type:"pdf_attachment.content_type",stream:false
   end
 
   # 作品调分