pdf在线测试3

app/controllers/exercises_controller.rb

@@ -1290,12 +1290,18 @@ class ExercisesController < ApplicationController
     if params[:export].present? && params[:export]
       normal_status(0,"正在下载中")
     else
-      respond_to do |format|
-        set_export_cookies
-        format.pdf do
-          render pdf: 'exercise_export/blank_exercise', filename: filename_, stylesheets: stylesheets, disposition: 'inline', type:"pdf_attachment.content_type",stream:false
-        end
-      end
+      file = File.open(Rails.root.join('exercise_export/blank_exercise'))
+      html = ERB.new(file.read).result(prepare_binding)
+
+      kit = PDFKit.new(html)
+      base_css = %w(app/templates/exercise_export/exercise_export.css)
+      base_css.each { |css| kit.stylesheets << Rails.root.join(css) }
+      file = Tempfile.new(filename_)
+      kit.to_pdf(file.path)
+      file
+
+      send_file file,disposition: 'inline', type:"pdf_attachment.content_type",stream:false
+
       # set_export_cookies
       # render pdf: 'exercise_export/blank_exercise', filename: filename_, stylesheets: stylesheets, disposition: 'inline', type:"pdf_attachment.content_type",stream:false
     end