课程删除功能

app/controllers/courses_controller.rb

@@ -775,7 +775,18 @@ class CoursesController < ApplicationController
   #删除课程
   #删除课程只是将课程的is_deleted状态改为false，is_deleted为false状态的课程只有管理员可以看到
   def destroy
+    @course.update_attributes(:is_delete => true)
+    @course = nil
+    redirect_to user_url(User.current)
+  end
 
+  # 恢复已删除的课程
+  def recovery
+    if User.current.admin?
+      @course.update_attributes(:is_delete => false)
+    else
+      return 403
+    end
   end
 
   private

app/models/course.rb

@@ -20,7 +20,7 @@ class Course < ActiveRecord::Base
     end
   end
   
-  attr_accessible :code, :extra, :name, :state, :tea_id, :time , :location, :state, :term, :password,:is_public,:description,:class_period, :open_student, :enterprise_name
+  attr_accessible :code, :extra, :name, :state, :tea_id, :time , :location, :state, :term, :password,:is_public,:description,:class_period, :open_student, :enterprise_name, :is_delete
   #belongs_to :project, :class_name => 'Course', :foreign_key => :extra, primary_key: :identifier
   belongs_to :teacher, :class_name => 'User', :foreign_key => :tea_id  # 定义一个方法teacher，该方法通过tea_id来调用User表
   belongs_to :school, :class_name => 'School', :foreign_key => :school_id #定义一个方法school，该方法通过school_id来调用School表
@@ -86,7 +86,8 @@ class Course < ActiveRecord::Base
   'is_public',
   'description',
   'class_period',
-  'open_student'
+  'open_student',
+  'is_delete'
 
   acts_as_customizable
 
@@ -94,7 +95,7 @@ class Course < ActiveRecord::Base
   scope :active, lambda { where(:status => STATUS_ACTIVE) }
   scope :status, lambda {|arg| where(arg.blank? ? nil : {:status => arg.to_i}) }
   scope :all_public, lambda { where(:is_public => true) }
-  scope :visible, lambda {|*args| where(Course.visible_condition(args.shift || User.current, *args)) }
+  scope :visible, lambda {|*args| where(Course.where("is_delete =?", 0).visible_condition(args.shift || User.current, *args)) }
   scope :allowed_to, lambda {|*args|
     user = User.current
     permission = nil

app/views/admin/courses.html.erb

@@ -67,6 +67,9 @@
           <td class="center">
             <%= format_date(course.created_at) %>
           </td>
+          <td class="buttons">
+            <%= link_to(l(:button_delete), course_path(course), :method => :delete, :class => 'icon icon-del', :onClick=>"delcfm()" ) %>
+          </td>
         </tr>
     <% end %>
     </tbody>

db/migrate/20151208015409_add_is_delete_to_courses.rb

@@ -1,5 +1,5 @@
 class AddIsDeleteToCourses < ActiveRecord::Migration
   def change
-    add_column :courses, :is_delete, :integer
+    add_column :courses, :is_delete, :integer, :default => 0
   end
 end