class ExerciseController < ApplicationController
  layout "base_courses"

  before_filter :find_course, :only => [:index,:new,:create]
  def index
    @is_teacher = User.current.allowed_to?(:as_teacher,@course)
    if @is_teacher
      exercises = @course.exercises
    else
      exercises = @course.exercises.where(:exercise_status => 1)
    end
    @exercises = paginateHelper exercises,20 #分页
    respond_to do |format|
      format.html
    end
  end

  def show

  end

  def new

  end

  def create

  end

  def edit

  end

  def update

  end

  def destroy

  end

  #统计结果
  def statistics_result

  end

  private
  def find_course
    @course = Course.find params[:course_id]
  rescue Exception => e
    render_404
  end
end