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#coding=utf-8
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require 'elasticsearch/model'
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class Course < ActiveRecord::Base
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include Redmine::SafeAttributes
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include CoursesHelper
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STATUS_ACTIVE = 1
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STATUS_CLOSED = 5
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STATUS_ARCHIVED = 9
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# elasticsearch
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include Elasticsearch::Model
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#elasticsearch kaminari init
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Kaminari::Hooks.init
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Elasticsearch::Model::Response::Response.__send__ :include, Elasticsearch::Model::Response::Pagination::Kaminari
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settings index: { number_of_shards: 5 } do
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mappings dynamic: 'false' do
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indexes :name, analyzer: 'smartcn',index_options: 'offsets'
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indexes :description, analyzer: 'smartcn',index_options: 'offsets'
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indexes :updated_at, index:"not_analyzed",type:"date"
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end
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end
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attr_accessible :code, :extra, :name, :state, :tea_id, :time , :location, :state, :term, :password,:is_public,
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:description,:class_period, :open_student, :enterprise_name, :is_delete, :syllabus_id, :end_time, :end_term,
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:choose_group_allow, :is_end, :homepage_show, :course_list_id, :teacher_list, :student_list, :is_hidden
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#belongs_to :project, :class_name => 'Course', :foreign_key => :extra, primary_key: :identifier
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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
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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
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belongs_to :syllabus
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belongs_to :course_list
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# has_many :bid
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has_many :course_members, dependent: :destroy
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has_many :members, :include => [:principal, :roles], :conditions => "#{Principal.table_name}.type='User' AND #{Principal.table_name}.status=#{Principal::STATUS_ACTIVE}"
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has_many :memberships, :class_name => 'Member'
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has_many :member_principals, :class_name => 'Member',
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:include => :principal,
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:conditions => "#{Principal.table_name}.type='Group' OR (#{Principal.table_name}.type='User' AND #{Principal.table_name}.status=#{Principal::STATUS_ACTIVE})"
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has_many :principals, :through => :member_principals, :source => :principal
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has_many :users, :through => :members
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has_many :org_courses, :dependent => :destroy
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has_many :organizations, :through => :org_courses
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# has_many :homeworks, :through => :homework_for_courses, :source => :bid, :dependent => :destroy
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has_many :journals_for_messages, :as => :jour, :dependent => :destroy
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# has_many :homework_for_courses, :dependent => :destroy
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has_many :student, :class_name => 'StudentsForCourse', :source => :user
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has_many :course_infos, :class_name => 'CourseInfos',:dependent => :destroy
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has_many :enabled_modules, :dependent => :delete_all
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has_many :boards, :dependent => :destroy, :order => "position ASC"
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#has_many :course_journals_for_messages, :class_name => 'CourseJournalsForMessage', :as => :jour, :dependent => :destroy
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has_many :news, :dependent => :destroy, :include => :author
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has_one :course_status, :class_name => "CourseStatus", :dependent => :destroy
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has_many :student_work_projects, :dependent => :destroy
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has_many :course_homework_categories, :dependent => :destroy, :order => "CONVERT(name USING gbk) COLLATE gbk_chinese_ci ASC"
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has_many :homework_commons, :dependent => :destroy
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has_many :shixun_homework_commons, class_name: 'HomeworkCommon', conditions: 'homework_type = 4'
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has_many :other_homework_commons, class_name: 'HomeworkCommon', conditions: 'homework_type IN (1, 3)'
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has_many :homework_group_settings, :dependent => :destroy
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has_many :student_works, :through => :homework_commons, :dependent => :destroy
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# 毕设选题
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has_many :graduation_topics, :dependent => :destroy
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has_many :student_graduation_topics, :dependent => :destroy
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has_many :graduation_groups, :dependent => :destroy, :order => "CONVERT(name USING gbk) COLLATE gbk_chinese_ci ASC"
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# 毕设任务
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has_many :graduation_tasks, :dependent => :destroy
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has_many :graduation_works, :dependent => :destroy
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has_many :course_groups, :dependent => :destroy, :order => "CONVERT(name USING gbk) COLLATE gbk_chinese_ci ASC"
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has_many :teacher_course_groups, :dependent => :destroy
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has_many :course_homework_statisticss, :dependent => :destroy
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# 课程动态
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has_many :course_acts, :class_name => 'CourseActivity',:as =>:course_act ,:dependent => :destroy
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# 工程认证
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has_many :ec_courses, :through => :ec_major_courses
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has_many :ec_major_courses, :dependent => :destroy
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has_many :course_activities
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# 课程消息
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has_many :course_messages, :class_name =>'CourseMessage', :as => :course_message, :dependent => :destroy
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has_many :exercises, :dependent => :destroy
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has_many :exercise_group_settings, :dependent => :destroy
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has_many :polls, :dependent => :destroy
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has_many :poll_group_settings, :dependent => :destroy
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# 课程贡献榜
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has_many :course_contributor_scores, :dependent => :destroy
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has_many :attachment_group_settings, :dependent => :destroy
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#课程模块
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has_many :course_modules, :dependent => :destroy
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#导入的学生信息
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has_many :import_course_users, :dependent => :destroy
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has_many :tidings, :as => :container, :dependent => :destroy
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acts_as_taggable
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acts_as_nested_set :order => 'name', :dependent => :destroy
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acts_as_attachable :view_permission => :view_course_files,
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:delete_permission => :manage_files
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validates_presence_of :name
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#validates_format_of :class_period, :with =>/^[1-9]\d*$/
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#validates_format_of :time, :with => /^\d{4}$/
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validates_format_of :name,:with =>/^[^ ]+[a-zA-Z0-9_\u4e00-\u9fa5\s\S]*$/
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validates_length_of :description, :maximum => 10000
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before_save :self_validate
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# 公开课程变成私有课程，所有资源都变成私有
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after_update :update_files_public
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after_create :create_board_sync, :act_as_course_activity, :send_tiding, :create_course_modules
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before_destroy :delete_all_members
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safe_attributes 'extra',
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'time',
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'name',
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'extra',
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'code',
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'location',
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'tea_id',
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'password',
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'term',
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'is_public',
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'description',
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'class_period',
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'open_student',
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'is_delete',
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'syllabus_id',
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'end_time',
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'end_term',
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'os_allow',
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'choose_group_allow',
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'credit',
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'homepage_show',
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'show_unit'
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acts_as_customizable
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scope :not_deleted, lambda{where(is_delete: 0)}
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scope :not_deleted_not_end, lambda{where(is_delete: 0, is_end: 0)}
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scope :not_deleted_but_is_end, lambda{where(is_end: 1, is_delete: 0)}
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scope :all_course
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scope :active, lambda { where(:status => STATUS_ACTIVE) }
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scope :status, lambda {|arg| where(arg.blank? ? nil : {:status => arg.to_i}) }
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scope :all_public, lambda { where(:is_public => true) }
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scope :visible, lambda {|*args| where(Course.where("is_delete =?", 0).visible_condition(args.shift || User.current, *args)) }
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scope :allowed_to, lambda {|*args|
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user = User.current
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permission = nil
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if args.first.is_a?(Symbol)
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permission = args.shift
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else
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user = args.shift
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permission = args.shift
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end
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where(Course.allowed_to_condition(user, permission, *args))
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}
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scope :like, lambda {|arg|
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if arg.blank?
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where(nil)
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else
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pattern = "%#{arg.to_s.strip.downcase}%"
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where(" LOWER(name) LIKE :p ", :p => pattern)
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end
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}
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scope :indexable,lambda { where('is_public = 1 and is_delete = 0') }
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def attachment_count
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Attachment.find_by_sql("select count(id) as count from attachments where container_id=#{self.id} and container_type='Course'").first.try(:count).to_i
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end
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def member_count
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Member.find_by_sql("select count(id) as count from members where course_id=#{self.id}").first.try(:count).to_i
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end
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def self.search(query)
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__elasticsearch__.search(
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{
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query: {
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multi_match: {
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query: query,
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type:"most_fields",
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operator: "or",
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fields: ['name', 'description^0.5']
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}
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},
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sort: {
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_score:{order: "desc" },
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updated_at:{order:"desc"}
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},
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highlight: {
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pre_tags: ['<span class="c_red">'],
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post_tags: ['</span>'],
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fields: {
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name: {},
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description: {}
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}
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}
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}
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)
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end
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def self.e_search(query)
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__elasticsearch__.search(
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{
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query: {
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multi_match: {
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query: query,
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type:"most_fields",
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operator: "or",
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fields: ['name', 'description^0.5']
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}
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},
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sort: {
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_score:{order: "desc" },
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updated_at:{order:"desc"}
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}
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}
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)
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end
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def delete!
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update_attribute(:is_delete, true)
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end
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def visible?(user=User.current)
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user.allowed_to?(:view_course, self)
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end
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def parent_id_changed?
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false
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end
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# Returns the mail adresses of users that should be always notified on project events
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def recipients
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notified_users.collect {|user| user.mail}
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end
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# Returns the users that should be notified on project events
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def notified_users
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# TODO: User part should be extracted to User#notify_about?
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members.select {|m| m.principal.present? && (m.mail_notification? || m.principal.mail_notification == 'all')}.collect {|m| m.principal}
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end
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def course_list_name
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self.course_list ? self.course_list.name : ""
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end
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# 选出教师数不为0的答辩组
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def course_graduation_group
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self.graduation_groups.select{|group| group.members.count > 0}
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end
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# 课程的短描述信息
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def short_description(length = 255)
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description.gsub(/<\/?.*?>/,"").html_safe if description
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#description.gsub(/^(.{#{length}}[^\n\r]*).*$/m, '\1...').strip if description
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end
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# 课程的短名称信息
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def short_name(length = 8)
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name.gsub(/<\/?.*?>/,"").html_safe if name
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end
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def strip_html(html)
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return html if html.empty? || !html.include?('<')
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output = ""
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tokenizer = HTML::Tokenizer.new(html)
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while token = tokenizer.next
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node = HTML::Node.parse(nil, 0, 0, token, false)
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output += token unless (node.kind_of? HTML::Tag) or (token =~ /^<!/)
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end
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return output
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end
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def extra_frozen?
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errors[:extra].blank? && !(new_record? || extra.blank?)
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end
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def archived?
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self.status == STATUS_ARCHIVED
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end
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# 课堂的老师不包括助教
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def course_teachers
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self.course_members.where(:role => [1, 2])
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end
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# 课堂的老师包括助教
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def teachers
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self.course_members.where(:role => [1, 2, 3])
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end
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def students
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self.course_members.where(:role => [4])
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end
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def self.visible_condition(user, options={})
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allowed_to_condition(user, :view_course, options)
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end
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# 获取课程的资源类型列表
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def attachmenttypes
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@attachmenttypes = Attachmentstype.find(:all, :conditions => ["#{Attachmentstype.table_name}.typeId= ?",self.attachmenttype ])
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end
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# 获取资源后缀名列表
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def contenttypes
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attachmenttypes
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if @attachmenttypes.length >0
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@attachmenttypes.last().suffixArr
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end
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end
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def active?
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self.status == STATUS_ACTIVE
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end
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#课程权限判断
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def allows_to?(action)
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if archived?
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# No action allowed on archived projects
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return false
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end
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unless active? || Redmine::AccessControl.read_action?(action)
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# No write action allowed on closed projects
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return false
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end
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# No action allowed on disabled modules
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if action.is_a? Hash
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allowed_actions.include? "#{action[:controller]}/#{action[:action]}"
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else
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allowed_permissions.include? action
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end
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end
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# 课程允许的权限集合
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def allowed_permissions
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@allowed_permissions ||= begin
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module_names = enabled_modules.all(:select => :name).collect {|m| m.name}
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Redmine::AccessControl.modules_permissions(module_names).collect {|p| p.name}
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end
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end
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# 课程允许的动作集合
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def allowed_actions
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@actions_allowed ||= allowed_permissions.inject([]) { |actions, permission| actions += Redmine::AccessControl.allowed_actions(permission) }.flatten
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end
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# 返回用户组可以访问的课程
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def users_by_role
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members.includes(:user, :roles).all.inject({}) do |h, m|
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m.roles.each do |r|
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h[r] ||= []
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h[r] << m.user
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end
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h
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end
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end
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#自定义验证
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def self_validate
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end
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def update_files_public
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unless self.is_public?
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self.attachments.each do |a|
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a.update_attributes(:is_public => false)
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end
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end
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end
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def is_public?
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self.is_public == 1
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end
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def update_default_value
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self.time = Time.now.year unless time
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self.term = cur_course_term unless term
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self.class_period = 10 unless class_period
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end
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# 创建课程讨论区
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def create_board_sync
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@board = self.boards.build
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#self.name=" #{l(:label_borad_course) }"
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@board.name = " #{l(:label_borad_course) }"#self.name
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@board.description = self.name.to_s
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@board.project_id = -1
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if @board.save
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logger.debug "[Course Model] ===> #{@board.to_json}"
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else
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logger.error "[Course Model] ===> Auto create board when course saved, because #{@board.full_messages}"
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end
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end
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# 新增课程留言
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# add by nwb
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def self.add_new_jour(user, notes, id, options={})
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course = Course.find(id)
|
|
|
if options.count == 0
|
|
|
pjfm = course.journals_for_messages.build(:user_id => user.id, :notes => notes, :reply_id => 0)
|
|
|
else
|
|
|
pjfm = course.journals_for_messages.build(options)
|
|
|
end
|
|
|
pjfm.save
|
|
|
pjfm
|
|
|
end
|
|
|
|
|
|
# 删除课程所有成员
|
|
|
def delete_all_members
|
|
|
if self.members && self.members.count > 0
|
|
|
me, mr = Member.table_name, MemberRole.table_name
|
|
|
connection.delete("DELETE FROM #{mr} WHERE #{mr}.member_id IN (SELECT #{me}.id FROM #{me} WHERE #{me}.course_id = #{id})")
|
|
|
Member.delete_all(['course_id = ?', id])
|
|
|
end
|
|
|
end
|
|
|
|
|
|
# 创建课程模块
|
|
|
def create_course_modules
|
|
|
mod = self.course_modules
|
|
|
if mod.blank?
|
|
|
type = ["activity", "shixun_homework", "common_homework", "group_homework", "graduation", "exercise", "poll", "attachment", "board", "course_group"]
|
|
|
name = ["动态", "实训作业", "普通作业", "分组作业", "毕业设计", "试卷", "问卷", "资源", "讨论", "分班"]
|
|
|
for i in 0..9
|
|
|
CourseModule.create(:course_id => self.id, :module_type => type[i], :position => i + 1, :hidden => (i == 4 ? 1 : 0), :module_name => name[i])
|
|
|
end
|
|
|
end
|
|
|
end
|
|
|
|
|
|
def get_endup_time
|
|
|
begin
|
|
|
end_time = Time.parse(self.endup_time)
|
|
|
rescue Exception => e
|
|
|
end_time = Time.parse("3000-01-01")
|
|
|
Rails.logger.error "[Error] course endup_time error. ===> #{e}"
|
|
|
ensure
|
|
|
return end_time
|
|
|
end
|
|
|
end
|
|
|
|
|
|
def get_time
|
|
|
begin
|
|
|
time = Date.new(self.time).to_time
|
|
|
rescue Exception => e
|
|
|
time = Time.parse("3000-01-01")
|
|
|
Rails.logger.error "[Error] course time error. ===> #{e}"
|
|
|
ensure
|
|
|
return time
|
|
|
end
|
|
|
end
|
|
|
|
|
|
def self.allowed_to_condition(user, permission, options={})
|
|
|
perm = Redmine::AccessControl.permission(permission)
|
|
|
base_statement = (perm && perm.read? ? "#{Course.table_name}.status <> #{Course::STATUS_ARCHIVED}" : "#{Course.table_name}.status = #{Course::STATUS_ACTIVE}")
|
|
|
if perm && perm.course_module
|
|
|
base_statement << " AND #{Course.table_name}.id IN (SELECT em.course_id FROM #{EnabledModule.table_name} em WHERE em.name='#{perm.course_module}')"
|
|
|
end
|
|
|
|
|
|
if options[:course]
|
|
|
course_statement = "#{Course.table_name}.id = #{options[:course].id}"
|
|
|
course_statement << " OR (#{Course.table_name}.lft > #{options[:course].lft} AND #{Course.table_name}.rgt < #{options[:course].rgt})" if options[:with_subcourses]
|
|
|
base_statement = "(#{course_statement}) AND (#{base_statement})"
|
|
|
end
|
|
|
|
|
|
if user.admin?
|
|
|
base_statement
|
|
|
else
|
|
|
statement_by_role = {}
|
|
|
unless options[:member]
|
|
|
role = user.logged? ? Role.non_member : Role.anonymous
|
|
|
if role.allowed_to?(permission)
|
|
|
statement_by_role[role] = "#{Course.table_name}.is_public = #{connection.quoted_true}"
|
|
|
end
|
|
|
end
|
|
|
if user.logged?
|
|
|
user.courses_by_role.each do |role, courses|
|
|
|
if role.allowed_to?(permission) && courses.any?
|
|
|
statement_by_role[role] = "#{Course.table_name}.id IN (#{courses.collect(&:id).join(',')})"
|
|
|
end
|
|
|
end
|
|
|
end
|
|
|
if statement_by_role.empty?
|
|
|
"1=0"
|
|
|
else
|
|
|
if block_given?
|
|
|
statement_by_role.each do |role, statement|
|
|
|
if s = yield(role, user)
|
|
|
statement_by_role[role] = "(#{statement} AND (#{s}))"
|
|
|
end
|
|
|
end
|
|
|
end
|
|
|
"((#{base_statement}) AND (#{statement_by_role.values.join(' OR ')}))"
|
|
|
end
|
|
|
end
|
|
|
end
|
|
|
|
|
|
# 课堂实训作业的评测次数
|
|
|
def evaluate_count
|
|
|
course_user_ids = self.students.map(&:user_id)
|
|
|
shixun_ids = self.homework_commons.joins(:homework_commons_shixuns).where(homework_type: 4).pluck(:shixun_id)
|
|
|
return 0 if shixun_ids.blank?
|
|
|
Game.joins(:challenge).where(challenges: {shixun_id: shixun_ids}, games: {user_id: course_user_ids}).sum(:evaluate_count)
|
|
|
end
|
|
|
|
|
|
|
|
|
#课程动态公共表记录
|
|
|
def act_as_course_activity
|
|
|
self.course_acts << CourseActivity.new(:user_id => self.tea_id,:course_id => self.id)
|
|
|
end
|
|
|
|
|
|
#创建课程后，给该用户发送消息
|
|
|
def send_tiding
|
|
|
self.tidings << Tiding.new(:user_id => self.tea_id, :trigger_user_id => self.tea_id, :belong_container_id => self.id, :belong_container_type =>'Course', :tiding_type => "System")
|
|
|
end
|
|
|
|
|
|
|
|
|
#项目与课程分离后，很多课程的名称等信息为空，这些数据信息存储在项目表中！！就是数据兼容的问题
|
|
|
#def name
|
|
|
# read_attribute('name') || Project.find_by_identifier(self.extra).try(:name)
|
|
|
#end
|
|
|
|
|
|
# after_commit on: [:create] do
|
|
|
# __elasticsearch__.index_document
|
|
|
# end
|
|
|
#
|
|
|
# after_commit on: [:update] do
|
|
|
# __elasticsearch__.update_document
|
|
|
# end
|
|
|
#
|
|
|
# after_commit on: [:destroy] do
|
|
|
# __elasticsearch__.delete_document
|
|
|
# end
|
|
|
def create_course_ealasticsearch_index
|
|
|
return if Rails.env.development?
|
|
|
if self.is_public == 1 and self.is_delete == 0 #公开 和 没有被删除的课程才被索引
|
|
|
self.__elasticsearch__.index_document
|
|
|
end
|
|
|
end
|
|
|
|
|
|
def update_course_ealasticsearch_index
|
|
|
return if Rails.env.development?
|
|
|
if self.is_public == 1 and self.is_delete == 0 #如果是初次更新成为公开或者恢复被删除的情况，会报错，那么这条记录尚未被索引过。没有报错就是更新的其他属性
|
|
|
begin
|
|
|
self.__elasticsearch__.update_document
|
|
|
rescue => e
|
|
|
self.__elasticsearch__.index_document
|
|
|
end
|
|
|
else #如果是更新成为私有的，那么索引就要被删除
|
|
|
begin
|
|
|
self.__elasticsearch__.delete_document
|
|
|
rescue => e
|
|
|
|
|
|
end
|
|
|
end
|
|
|
end
|
|
|
|
|
|
def delete_course_ealasticsearch_index
|
|
|
return if Rails.env.development?
|
|
|
begin
|
|
|
self.__elasticsearch__.delete_document
|
|
|
rescue => e
|
|
|
|
|
|
end
|
|
|
end
|
|
|
|
|
|
# 延迟生成邀请码
|
|
|
def invite_code
|
|
|
return generate_invite_code
|
|
|
end
|
|
|
|
|
|
# 生成邀请码
|
|
|
CODES = %W(2 3 4 5 6 7 8 9 A B C D E F G H J K L N M O P Q R S T U V W X Y Z)
|
|
|
def generate_invite_code
|
|
|
code = read_attribute(:invite_code)
|
|
|
if !code || code.size <5
|
|
|
code = CODES.sample(5).join
|
|
|
return generate_invite_code if Course.where(invite_code: code).present?
|
|
|
update_attribute(:invite_code, code)
|
|
|
end
|
|
|
code
|
|
|
end
|
|
|
|
|
|
|
|
|
def generate_qrcode
|
|
|
ticket = self.qrcode
|
|
|
if !ticket || ticket.size < 10 || (Time.now.to_i > self.qrcode_expiretime)
|
|
|
response = Wechat.api.qrcode_create_scene(invite_code, 2592000)
|
|
|
logger.debug "response = #{response}"
|
|
|
self.qrcode = response['ticket']
|
|
|
self.qrcode_expiretime = Time.now.to_i+response['expire_seconds']
|
|
|
save! && reload
|
|
|
ticket = qrcode
|
|
|
end
|
|
|
ticket
|
|
|
end
|
|
|
end
|
|
|
|
|
|
|
|
|
|
|
|
# Delete the previous articles index in Elasticsearch
|
|
|
# Course.__elasticsearch__.client.indices.delete index: Course.index_name rescue nil
|
|
|
#
|
|
|
# # Create the new index with the new mapping
|
|
|
# Course.__elasticsearch__.client.indices.create \
|
|
|
# index: Course.index_name,
|
|
|
# body: { settings: Course.settings.to_hash, mappings: Course.mappings.to_hash }
|
|
|
|
|
|
# Index all article records from the DB to Elasticsearch
|
|
|
#Course.where('is_public = 1').import :force=>true
|
|
|
|
|
|
|
