117 lines
3.6 KiB
Ruby
117 lines
3.6 KiB
Ruby
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#coding=utf-8
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class ZipdownController < ApplicationController
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#查找项目（课程）
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before_filter :find_project_by_bid_id, :only => [:assort]
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#检查权限
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#勿删 before_filter :authorize, :only => [:assort,:download_user_homework]
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## 200M
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MAX_DOWN_SIZE = 500 * 1024 * 1024
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include ZipService
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#统一下载功能
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def download
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if User.current.logged?
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begin
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if params[:base64file]
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file = decode64(params[:base64file])
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send_file "#{OUTPUT_FOLDER}/#{file}", :filename => filename_for_content_disposition(file), :type => detect_content_type(file)
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else
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send_file "#{OUTPUT_FOLDER}/#{params[:file]}", :filename => filename_for_content_disposition(params[:filename]), :type => detect_content_type(params[:file])
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end
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rescue => e
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render file: 'public/no_file_found.html'
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end
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else
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render_403
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end
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end
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#一个作业下所有文件打包下载，只有admin和课程老师有权限
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def assort
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if params[:obj_class] == "Bid"
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bid = Bid.find params[:obj_id]
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#render_403 if User.current.allowed_to?(:as_teacher,bid.courses.first)
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zipfile = checkfileSize(bid.homeworks) {
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zip_bid bid
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}
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elsif params[:obj_class] == "HomeworkCommon"
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homework = HomeworkCommon.find params[:obj_id]
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render_403 if User.current.allowed_to?(:as_teacher,homework.course)
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zipfile = checkfileSize(homework.student_works) {
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zip_homework_common homework
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}
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elsif params[:obj_class] == "Work"
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contest_work = Work.find params[:obj_id]
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render_403 if User.current.admin_of_contest?(contest_work.contest)
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zipfile = checkfileSize(contest_work.contestant_works) {
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zip_contest_work contest_work
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}
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else
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logger.error "[ZipDown#assort] ===> #{params[:obj_class]} unKown !!"
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end
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respond_to do |format|
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format.json {
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render json: zipfile.to_json
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}
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end
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end
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#下载某一学生的作业的所有文件
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def download_user_homework
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homework = HomeworkAttach.find params[:homework]
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if User.current.admin? || User.current.member_of_course?(homework.bid.courses.first)
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if homework != nil
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unless homework.attachments.empty?
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zipfile = zip_homework_by_user homework
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filename = ((homework.user.user_extensions.nil? || homework.user.user_extensions.student_id.nil?) ? "" : homework.user.user_extensions.student_id) +
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"_" + homework.user.show_name +
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"_" + homework.name + ".zip"
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send_file zipfile.file_path, :filename => filename_for_content_disposition(filename), :type => detect_content_type(zipfile.file_path) if(zipfile)
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else
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render file: 'public/no_file_found.html'
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end
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else
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render file: 'public/file_not_found.html'
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end
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else
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render_403
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end
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#rescue => e
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# render file: 'public/file_not_found.html'
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end
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private
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#通过作业Id找到项目（课程）
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def find_project_by_bid_id
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obj_class = params[:obj_class]
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obj_id = params[:obj_id]
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obj = obj_class.constantize.find(obj_id)
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case obj.class.to_s.to_sym
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when :Bid
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@project = obj.courses[0]
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end
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end
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def checkfileSize(works)
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file_count = 0
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file_size = 0
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works.each do |work|
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file_count += work.attachments.count
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work.attachments.each do |attach|
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file_size += attach.filesize
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end
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end
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if file_size > MAX_DOWN_SIZE
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{err: -1, message: 'file size to large'}
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elsif file_count > 0
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yield if block_given?
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else
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{err: -2, :message => "no file"}
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end
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end
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end
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