|
|
class Exercise < ActiveRecord::Base
|
|
|
#exercise_status: 1,新建；2，发布；3，关闭
|
|
|
include Redmine::SafeAttributes
|
|
|
belongs_to :user
|
|
|
belongs_to :course ,:touch => true
|
|
|
belongs_to :exercise_bank
|
|
|
has_many :exercise_group_settings, :dependent => :destroy
|
|
|
has_many :exercise_questions, :dependent => :destroy
|
|
|
has_many :exercise_users, :dependent => :destroy, :conditions => "exercise_users.is_delete = 0"
|
|
|
has_many :users, :through => :exercise_users #该测试被哪些用户提交答案过
|
|
|
has_many :course_acts, :class_name => 'CourseActivity',:as =>:course_act ,:dependent => :destroy
|
|
|
# 课程消息
|
|
|
has_many :tidings, as: :container, dependent: :destroy
|
|
|
has_many :course_messages, :class_name =>'CourseMessage', :as => :course_message, :dependent => :destroy
|
|
|
|
|
|
has_many :exercise_level_settings, :dependent => :destroy
|
|
|
has_many :exercise_user_questions
|
|
|
|
|
|
after_create :acts_as_course_message
|
|
|
def acts_as_course_message
|
|
|
if self.course
|
|
|
if self.exercise_status == 2 #未发布
|
|
|
#self.course.members.each do |m|
|
|
|
self.course_messages << CourseMessage.create(:user_id => User.current.id, :course_id => self.course_id, :viewed => false,:status=>2)
|
|
|
#end
|
|
|
# else
|
|
|
# self.course_messages.destroy_all 这里的destory_all值得商榷。因为我这里是通过status来控制不同的status的
|
|
|
end
|
|
|
end
|
|
|
end
|
|
|
|
|
|
def create_user_question_list exercise_user_id
|
|
|
self.exercise_questions.where("question_type != 5").each do |question|
|
|
|
ExerciseUserQuestion.create(exercise_id: self.id, exercise_user_id: exercise_user_id, exercise_question_id: question.id)
|
|
|
end
|
|
|
self.exercise_level_settings.each do |setting|
|
|
|
# 每个级别中随机挑选num个实训题
|
|
|
setting.exercise_questions.pluck(:id).sample(setting.num).each do |question_id|
|
|
|
ExerciseUserQuestion.create(exercise_id: self.id, exercise_user_id: exercise_user_id, exercise_question_id: question_id)
|
|
|
end
|
|
|
end
|
|
|
end
|
|
|
|
|
|
def user_question_list exercise_user_id
|
|
|
if self.exercise_user_questions.where(exercise_user_id: exercise_user_id).count == 0
|
|
|
self.exercise_questions
|
|
|
else
|
|
|
self.exercise_questions.where(id: self.exercise_user_questions.where(exercise_user_id: exercise_user_id).
|
|
|
pluck(:exercise_question_id))
|
|
|
end
|
|
|
end
|
|
|
|
|
|
def level_setting level
|
|
|
self.exercise_level_settings.where(level: level).first
|
|
|
end
|
|
|
|
|
|
def shixun_question_count
|
|
|
self.exercise_level_settings.sum(:num)
|
|
|
end
|
|
|
|
|
|
def shixun_question_score
|
|
|
score = 0
|
|
|
self.exercise_level_settings.each do |setting|
|
|
|
score += setting.num * setting.score.to_i
|
|
|
end
|
|
|
score
|
|
|
end
|
|
|
|
|
|
def has_shixun_questions?
|
|
|
self.exercise_questions.where("question_type = 5 and exercise_level_setting_id != 0").count > 0
|
|
|
end
|
|
|
|
|
|
def exercise_question_size
|
|
|
self.exercise_questions.where("question_type != 5").count + self.shixun_question_count
|
|
|
end
|
|
|
end
|
