修改创建方式

app/controllers/exercise_controller.rb

@@ -1,7 +1,9 @@
 class ExerciseController < ApplicationController
   layout "base_courses"
 
+  before_filter :find_exercise_and_course, :only => [:create_exercise_question]
   before_filter :find_course, :only => [:index,:new,:create,:student_exercise_list,:edit]
+
   def index
     @is_teacher = User.current.allowed_to?(:as_teacher,@course)
     if @is_teacher
@@ -36,9 +38,19 @@ class ExerciseController < ApplicationController
   end
 
   def new
-    @exercise = Exercise.new
-    respond_to do |format|
-      format.html{render :layout => 'base_courses'}
+    option = {
+        :exercise_name => "",
+        :course_id => @course.id,
+        :exercise_status => 1,
+        :user_id => User.current.id,
+        :time => Time.now,
+        :end_time => Time.now,
+        :publish_time => Time.now,
+        :polls_description => ""
+    }
+    @exercise = Exercise.create option
+    if @exercise
+      redirect_to edit_exercise_url @exercise.id
     end
   end
 
@@ -71,10 +83,10 @@ class ExerciseController < ApplicationController
   end
 
   def update
-    @exercise.exercise_name = params[:exercise_name]
-    @exercise.exercise_description = params[:exercise_name]
-    @exercise.start_at = params[:start_at]
-    @exercise.end_at = params[:end_at]
+    @exercise.exercise_name = params[:exercise][:exercise_name]
+    @exercise.exercise_description = params[:exercise][:exercise_description]
+    @exercise.time =  params[:exercise][:time]
+    @exercise.end_time = params[:exercise][:end_time]
     if @exercise.save
       respond_to do |format|
         format.js
@@ -218,6 +230,13 @@ class ExerciseController < ApplicationController
   end
 
   private
+  def find_exercise_and_course
+    @exercise = Exercise.find params[:id]
+    @course = Course.find @exercise.course_id
+  rescue Exception => e
+    render_404
+  end
+
   def find_course
     @course = Course.find params[:course_id]
   rescue Exception => e