优化

app/controllers/shixuns_controller.rb

@@ -154,7 +154,7 @@ class ShixunsController < ApplicationController
 			@can_fork = {can_fork: "已经职业认证的教师才能fork实训",
 									 certi_url: "/account/certification"}
     end
-		@current_myshixun = @shixun.current_myshixun(current_user)
+		@current_myshixun = @shixun.current_myshixun(current_user.id)
 		if @shixun.fork_from
 			fork_shixun = Shixun.select(:id, :user_id, :name, :identifier).where(id: @shixun.fork_from).first
 			@fork_from = {name: fork_shixun.name, username: fork_shixun.owner.try(:full_name),

app/models/shixun.rb

@@ -210,9 +210,8 @@ class Shixun < ApplicationRecord
   end
 
   # 当前用户开启的实训
-  def current_myshixun(user)
-    return nil unless user.logged?
-    myshixuns.find_by(user_id: user.id)
+  def current_myshixun(user_id)
+    myshixuns.find_by(user_id: user_id)
   end
 
   # 实训技术平台