在线测验的自动发布和截止

app/controllers/exercise_controller.rb

@@ -6,6 +6,14 @@ class ExerciseController < ApplicationController
   include ExerciseHelper
 
   def index
+    publish_exercises = Exercise.where("publish_time is not null and exercise_status = 1 and publish_time <=?",Time.now)
+    publish_exercises.each do |exercise|
+      exercise.update_column('exercise_status', 2)
+    end
+    end_exercises = Exercise.where("end_time <=? and exercise_status = 2",Time.now)
+    end_exercises.each do |exercise|
+      exercise.update_column('exercise_status', 3)
+    end
     if @course.is_public == 0 && !User.current.member_of_course?(@course)
       render_403
       return
@@ -24,6 +32,14 @@ class ExerciseController < ApplicationController
   end
 
   def show
+    publish_exercises = Exercise.where("publish_time is not null and exercise_status = 1 and publish_time <=?",Time.now)
+    publish_exercises.each do |exercise|
+      exercise.update_column('exercise_status', 2)
+    end
+    end_exercises = Exercise.where("end_time <=? and exercise_status = 2",Time.now)
+    end_exercises.each do |exercise|
+      exercise.update_column('exercise_status', 3)
+    end
     unless User.current.member_of_course?(@course)
       render_403
       return

lib/tasks/exercise_publish.rake

@@ -0,0 +1,18 @@
+#coding=utf-8
+
+namespace :exercise_publish do
+  desc "publish exercise and end exercise"
+  task :publish => :environment do
+    exercises = Exercise.where("publish_time is not null and exercise_status = 1 and publish_time <=?",Time.now)
+    exercises.each do |exercise|
+      exercise.update_column('exercise_status', 2)
+    end
+  end
+
+  task :end => :environment do
+    exercises = Exercise.where("end_time <=? and exercise_status = 2",Time.now)
+    exercises.each do |exercise|
+      exercise.update_column('exercise_status', 3)
+    end
+  end
+end