forked from jasder/forgeplus
35 lines
1.2 KiB
Ruby
35 lines
1.2 KiB
Ruby
|
class CourseGroup < ApplicationRecord
|
||
|
|
default_scope { order("course_groups.position ASC") }
|
||
|
|
belongs_to :course, counter_cache: true
|
||
|
|
has_many :course_members
|
||
|
|
has_many :exercise_group_settings,:dependent => :destroy
|
||
|
|
has_many :attachment_group_settings, :dependent => :destroy
|
||
|
|
has_many :homework_group_reviews, :dependent => :destroy
|
||
|
|
has_many :teacher_course_groups, :dependent => :destroy
|
||
|
|
has_many :homework_group_settings, :dependent => :destroy
|
||
|
|
scope :by_group_ids, lambda { |ids| where(id: ids)}
|
||
|
|
|
||
|
|
validates :name, length: { maximum: 60, too_long: "不能超过60个字符" }
|
||
|
|
validates_uniqueness_of :name, scope: :course_id, message: "不能创建相同名称的分班"
|
||
|
|
|
||
|
|
after_create :generate_invite_code
|
||
|
|
|
||
|
|
# 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 < 6
|
||
|
|
code = CODES.sample(6).join
|
||
|
|
return generate_invite_code if CourseGroup.where(invite_code: code).present?
|
||
|
|
update_attribute(:invite_code, code)
|
||
|
|
end
|
||
|
|
code
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|