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class CourseAttendance < ApplicationRecord
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# status: 0: 未开启，1：已开启，2：已截止
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# mode: 0 两种签到，1 二维码签到，2 数字签到，3 快捷签到
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enum mode: { ALL: 0, QRCODE: 1, NUMBER: 2, QUICK: 3 }
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belongs_to :course
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belongs_to :user
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has_many :course_attendance_groups, dependent: :destroy
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has_many :course_member_attendances, dependent: :destroy
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has_one :course_act, class_name: 'CourseActivity', as: :course_act, dependent: :destroy
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validates :name, presence: true, length: { maximum: 60, too_long: "不能超过60个字符" }
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validates :mode, presence: true
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validates :attendance_date, presence: true
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validates :start_time, presence: true
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validates :end_time, presence: true
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after_create :generate_attendance_code, :act_as_course_activity
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# 正常签到人数
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def normal_count
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course_member_attendances.select{|member_attendance| member_attendance.attendance_status == "NORMAL"}.size
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end
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# 请假人数
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def leave_count
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course_member_attendances.select{|member_attendance| member_attendance.attendance_status == "LEAVE"}.size
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end
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# 旷课人数
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def absence_count
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course_member_attendances.select{|member_attendance| member_attendance.attendance_status == "ABSENCE"}.size
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end
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# 总人数
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def all_count
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course_member_attendances.size
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end
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def current_attendance?
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a_start_time = "#{attendance_date} #{start_time}".to_time
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a_end_time = "#{attendance_date} #{end_time}".to_time
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a_start_time < Time.current && Time.current < a_end_time
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end
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#课程动态公共表记录
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def act_as_course_activity
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CourseActivity.create(user_id: user_id, course_id: course_id, course_act: self)
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end
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# 延迟生成邀请码
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def attendance_code
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return generate_attendance_code
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end
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# 生成邀请码
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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)
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def generate_attendance_code
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code = read_attribute(:attendance_code)
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if !code || code.size < 4
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code = CODES.sample(4).join
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return generate_attendance_code if CourseAttendance.where(attendance_code: code).present?
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update_attribute(:attendance_code, code)
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end
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code
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end
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end
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