t

app/controllers/courses_controller.rb

@@ -57,6 +57,20 @@ class CoursesController < ApplicationController
     redirect_to courses_path, flash: {:success => "已经成功关闭该课程:#{ @course.name}"}
   end
 
+  def excel
+    @course= current_user.teaching_courses
+  end
+
+  def excel_in
+    @course = Course.find_by_id(params[:id])
+    if @course.update_attributes(course_params)
+      flash={:info => " 导入成功"}
+    else
+      flash={:warning => "导入失败"}
+    end
+    redirect_to excel_courses_path, flash: flash
+  end
+
   #-------------------------for students----------------------
 
   def list

app/models/course.rb

@@ -1,6 +1,7 @@
 class Course < ActiveRecord::Base
 
   mount_uploader :avatar, AvatarUploader
+  mount_uploader :excel, ExcelUploader
 
   has_many :grades
   has_many :users, through: :grades

app/uploaders/excel_uploader.rb

@@ -0,0 +1,51 @@
+# encoding: utf-8
+
+class ExcelUploader < CarrierWave::Uploader::Base
+
+  # Include RMagick or MiniMagick support:
+  # include CarrierWave::RMagick
+  # include CarrierWave::MiniMagick
+
+  # Choose what kind of storage to use for this uploader:
+  storage :file
+  # storage :fog
+
+  # Override the directory where uploaded files will be stored.
+  # This is a sensible default for uploaders that are meant to be mounted:
+  def store_dir
+    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
+  end
+
+  # Provide a default URL as a default if there hasn't been a file uploaded:
+  # def default_url
+  #   # For Rails 3.1+ asset pipeline compatibility:
+  #   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
+  #
+  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
+  # end
+
+  # Process files as they are uploaded:
+  # process :scale => [200, 300]
+  #
+  # def scale(width, height)
+  #   # do something
+  # end
+
+  # Create different versions of your uploaded files:
+  # version :thumb do
+  #   process :resize_to_fit => [50, 50]
+  # end
+
+  # Add a white list of extensions which are allowed to be uploaded.
+  # For images you might use something like this:
+  # def extension_white_list
+  #   %w(jpg jpeg gif png)
+  # end
+
+  # Override the filename of the uploaded files:
+  # Avoid using model.id or version_name here, see uploader/store.rb for details.
+  # def filename
+  #   "something.jpg" if original_filename
+  # end
+
+end

app/views/courses/index.html.erb

@@ -28,6 +28,7 @@
                   <th>编辑课程</th>
                   <th>打开课程</th>
                   <th>删除课程</th>
+                  <th>上传最新资料</th>
             <% elsif student_logged_in? %>
                   <th>删除课程</th>
                   <th>是否选为学位课</th>
@@ -52,6 +53,11 @@
                           <td><%= link_to "打开", open_course_url(course), class: 'btn btn-xs btn-info' %></td>
                         <% end %>
                       <td><%= link_to "删除", course_path(course), :method => "delete", class: 'btn btn-xs btn-danger', :data => {confirm: '确定要删除此课程?'} %></td>
+
+                      <td><%= f.file_field :excel %>
+                        <%= f.hidden_field :excel_cache %></td>
+
+
                   <% elsif student_logged_in? %>
                       <td><%= link_to "删除", quit_course_path(course), class: 'btn-sm btn-danger' %></td>
                       <% if course.degree %>

config/routes.rb

@@ -27,12 +27,15 @@ Rails.application.routes.draw do
       get :classtable
       get :isdegree #add route isdegree
       get :nodegree #add route nodegree
+      patch :excel_in
+      patch :excel_out
     end
     collection do
       get :list
       get :search
       get :refresh_search
       get :credit #add credit route
+      get :excel
     end
   end
 

db/migrate/20170105083346_add_newfile_to_course.rb

@@ -0,0 +1,5 @@
+class AddNewfileToCourse < ActiveRecord::Migration
+  def change
+    add_column :courses, :excel, :string
+  end
+end