作业所有作品附件打包下载

app/controllers/zipdown_controller.rb

@@ -29,26 +29,25 @@ class ZipdownController < ApplicationController
         render file: 'public/no_file_found.html'
         return
       end
+    elsif params[:obj_class] == "HomeworkCommon"
+      homework = HomeworkCommon.find params[:obj_id]
+      render_403 if User.current.allowed_to?(:as_teacher,homework.course)
+      file_count = 0
+      homework.student_works.map { |work| file_count += work.attachments.count}
+      if file_count > 0
+        zipfile = zip_homework_common homework
+      else
+        render file: 'public/no_file_found.html'
+        return
+      end
     else
       logger.error "[ZipDown#assort] ===> #{params[:obj_class]} unKown !!"
     end
-
-    # if zipfile
-    #   if zipfile.length > 1
-    #     @mut_down_files = zipfile #zipfile.each{|x| File.basename(x)}
-    #   else
-    #     send_file zipfile.first[:real_file], :filename => bid.name + ".zip", :type => detect_content_type(zipfile.first[:real_file])
-    #     return
-    #   end
-    # end
-
     respond_to do |format|
       format.json {
         render json: zipfile.to_json
       }
     end
-  #rescue Exception => e
-  #  render file: 'public/no_file_found.html'
   end
 
   #下载某一学生的作业的所有文件
@@ -98,29 +97,34 @@ class ZipdownController < ApplicationController
         digests << out_file.file_digest
       end
     end
-
     homework_id = bid.id
     user_id = bid.author_id
-
-
     out_file = find_or_pack(homework_id, user_id, digests.sort){
       zipping("#{Time.now.to_i}_#{bid.name}.zip",
               bid_homework_path, OUTPUT_FOLDER)
     }
+    [{files:[out_file.file_path], count: 1, index: 1,
+      real_file: out_file.file_path,  file: File.basename(out_file.file_path),
+      size:(out_file.pack_size / 1024.0 / 1024.0).round(2)
+     }]
+  end
 
-
+  def zip_homework_common homework_common
-    # zips = split_pack_files(bid_homework_path, Setting.pack_attachment_max_size.to_i*1024)
+    bid_homework_path = []
-    # x = 0
+    digests = []
-    #
+    homework_common.student_works.each do |work|
-    #
+      unless work.attachments.empty?
-    # zips.each { |o|
+        out_file = zip_student_work_by_user(work)
-    #   x += 1
+        bid_homework_path << out_file.file_path
-    #   file = zipping "#{Time.now.to_i}_#{bid.name}_#{x}.zip", o[:files], OUTPUT_FOLDER
+        digests << out_file.file_digest
-    #   o[:real_file] = file
+      end
-    #   o[:file] = File.basename(file)
+    end
-    #   o[:size] = (File.size(file) / 1024.0 / 1024.0).round(2)
+    homework_id = homework_common.id
-    # }
+    user_id = homework_common.user_id
-
+    out_file = find_or_pack(homework_id, user_id, digests.sort){
+      zipping("#{Time.now.to_i}_#{homework_common.name}.zip",
+              bid_homework_path, OUTPUT_FOLDER)
+    }
     [{files:[out_file.file_path], count: 1, index: 1,
       real_file: out_file.file_path,  file: File.basename(out_file.file_path),
       size:(out_file.pack_size / 1024.0 / 1024.0).round(2)
@@ -131,8 +135,6 @@ class ZipdownController < ApplicationController
     homeworks_attach_path = []
     not_exist_file = []
     # 需要将所有homework.attachments遍历加入zip
-
-
     digests = []
     homework_attach.attachments.each do |attach|
       if File.exist?(attach.diskfile)
@@ -143,12 +145,30 @@ class ZipdownController < ApplicationController
         digests << 'not_exist_file'
       end
     end
-
     out_file = find_or_pack(homework_attach.bid_id, homework_attach.user_id, digests.sort){
       zipping("#{homework_attach.user.lastname}#{homework_attach.user.firstname}_#{((homework_attach.user.user_extensions.nil? || homework_attach.user.user_extensions.student_id.nil?) ? "" : homework_attach.user.user_extensions.student_id)}_#{Time.now.to_i.to_s}.zip",
               homeworks_attach_path, OUTPUT_FOLDER, true, not_exist_file)
     }
+  end
 
+  def zip_student_work_by_user work
+    homeworks_attach_path = []
+    not_exist_file = []
+    # 需要将所有homework.attachments遍历加入zip
+    digests = []
+    work.attachments.each do |attach|
+      if File.exist?(attach.diskfile)
+        homeworks_attach_path << attach.diskfile
+        digests << attach.digest
+      else
+        not_exist_file << attach.filename
+        digests << 'not_exist_file'
+      end
+    end
+    out_file = find_or_pack(work.homework_common_id, work.user_id, digests.sort){
+      zipping("#{work.user.lastname}#{work.user.firstname}_#{((work.user.user_extensions.nil? || work.user.user_extensions.student_id.nil?) ? "" : work.user.user_extensions.student_id)}_#{Time.now.to_i.to_s}.zip",
+              homeworks_attach_path, OUTPUT_FOLDER, true, not_exist_file)
+    }
   end
 
 

app/views/student_work/index.html.erb

@@ -38,7 +38,13 @@
       </span>
       <input  type="text" value="<%= @name%>" placeholder="昵称、学号、姓名搜索" class="min_search ml10 fl" onkeypress="SearchByName($(this),'<%= student_work_index_path(:homework => @homework.id)%>',event);">
       <div class="fr">
-        <a  class="down_btn fr"  href="javascript:void(0);">附件</a>
+        <% if @homework.student_works.empty?%>
+            <%= link_to "附件", "javascript:void(0)", class: "down_btn fr", :onclick => "alert('没有学生提交作业，无法下载附件')" %>
+        <% else%>
+            <%= link_to "附件", zipdown_assort_path(obj_class: @homework.class, obj_id: @homework, format: :json),
+                    remote: true, class: "down_btn fr" %>
+        <% end%>
+
         <a  class="down_btn fr" href="javascript:void(0);">列表</a>
         <span class="mt3 fr " style="color:#136b3b;">导出全部：</span>
       </div>