调整

app/models/live_link.rb

@@ -4,7 +4,7 @@ class LiveLink < ApplicationRecord
 
   has_many :tidings, as: :container, dependent: :destroy
 
-  validates :url, format: { with: CustomRegexp::URL, message: "必须为网址超链接" }
+  # validates :url, format: { with: CustomRegexp::URL, message: "必须为网址超链接" }
   validates :description, length: { maximum: 100, too_long: "不能超过100个字符" }
   validates :course_name, presence: true
   validates :platform, presence: true