diff --git a/app/controllers/shixuns_controller.rb b/app/controllers/shixuns_controller.rb
index c9b56bb98..b9c2086d8 100644
--- a/app/controllers/shixuns_controller.rb
+++ b/app/controllers/shixuns_controller.rb
@@ -562,16 +562,16 @@ class ShixunsController < ApplicationController
 				commit_id = commit["id"]
 			end
 
-			# 如果该实训是金课中的实训，则将当前用户加入到当期开课的课堂
-			# if StageShixun.exists?(shixun_id: @shixun.id, subject_id: Subject.where(excellent: 1))
-			# 	subject = Subject.where(excellent: 1, id: StageShixun.where(shixun_id: @shixun.id).pluck(:subject_id)).take
-			# 	course = subject.courses.where("start_date is not null and start_date <= '#{Date.today}' and end_date is not null and end_date >= '#{Date.today}'").take
-			# 	if course.present? && !CourseMember.exists?(course_id: course.id, user_id: current_user.id)
-			# 		# 为了不影响后续操作，用create而不是create!
-			# 		CourseMember.create(course_id: course.id, user_id: current_user.id, role: 4)
-			# 		CourseAddStudentCreateWorksJob.perform_later(course.id, [current_user.id])
-			# 	end
-			# end
+			如果该实训是金课中的实训，则将当前用户加入到当期开课的课堂
+			if StageShixun.exists?(shixun_id: @shixun.id, subject_id: Subject.where(excellent: 1))
+				subject = Subject.where(id: StageShixun.where(shixun_id: @shixun.id).pluck(:subject_id), excellent: 1).take(1)
+				course = subject.courses.where("start_date is not null and start_date <= '#{Date.today}' and end_date is not null and end_date >= '#{Date.today}'").take
+				if course.present? && !CourseMember.exists?(course_id: course.id, user_id: current_user.id)
+					# 为了不影响后续操作，用create而不是create!
+					CourseMember.create(course_id: course.id, user_id: current_user.id, role: 4)
+					CourseAddStudentCreateWorksJob.perform_later(course.id, [current_user.id])
+				end
+			end
 
 			ActiveRecord::Base.transaction do
 				begin
diff --git a/app/controllers/subjects_controller.rb b/app/controllers/subjects_controller.rb
index 5389ff961..431423d87 100644
--- a/app/controllers/subjects_controller.rb
+++ b/app/controllers/subjects_controller.rb
@@ -149,7 +149,7 @@ class SubjectsController < ApplicationController
   end
 
   def choose_subject_shixun
-    @search = params[:search]
+    @search = params[:search].strip
     @type = params[:type]
     # 超级管理员用户显示所有未隐藏的实训、非管理员显示合作团队用户的实训（对本单位公开且未隐藏）
     if current_user.admin?
@@ -163,7 +163,7 @@ class SubjectsController < ApplicationController
     tag_ids = @shixuns.joins(:shixun_tag_repertoires).pluck(:tag_repertoire_id).uniq
     @tags = TagRepertoire.select([:id, :name]).where(id: tag_ids)
 
-    if params[:search]
+    unless @search.blank?
       @shixuns = @shixuns.where("name like ?", "%#{@search}%")
     end
 
diff --git a/app/models/subject.rb b/app/models/subject.rb
index 113460375..5116cce75 100644
--- a/app/models/subject.rb
+++ b/app/models/subject.rb
@@ -21,7 +21,7 @@ class Subject < ApplicationRecord
   # 开放课堂
   has_many :courses, -> { order("courses.id ASC") }
 
-  validates :name, length: { maximum: 40 }
+  validates :name, length: { maximum: 60 }
   validates :description, length: { maximum: 5000 }
   validates :learning_notes, length: { maximum: 500 }
 
diff --git a/public/react/src/modules/courses/elearning/Elearning.js b/public/react/src/modules/courses/elearning/Elearning.js
index d587d88c8..81f300538 100644
--- a/public/react/src/modules/courses/elearning/Elearning.js
+++ b/public/react/src/modules/courses/elearning/Elearning.js
@@ -75,7 +75,19 @@ class Elearning extends Component{
 	};
 	//开始学习
 	Startlearning=()=>{
-		this.Tojoinclass();
+		let {userlogin} = this.state;
+		if (userlogin === undefined) {
+			this.setState({
+				isRender: true
+			})
+			return
+		}
+		if (userlogin === "") {
+			this.setState({
+				isRender: true
+			})
+			return;
+		}
 		if(this.props.isNotMember()===true){
 			this.setState({
 				yslJointhe:true
@@ -221,20 +233,10 @@ class Elearning extends Component{
 		})
 	};
 	Tojoinclass=()=> {
-		let {userlogin} = this.state;
-		if (userlogin === undefined) {
-			this.setState({
-				isRender: true
-			})
-			return
-		}
-		if (userlogin === "") {
 			this.setState({
 				isRender: true
 			})
-			return;
-		}
-	}
+	};
 
 	render(){
 		let{description,whethertoedit,isSpin,start_learning,hidestartshixunsreplacevalues,learned,last_shixun,stages,isRender} =this.state;
diff --git a/public/react/src/modules/courses/elearning/YslDetailCards.js b/public/react/src/modules/courses/elearning/YslDetailCards.js
index 38cc32d18..a1ad44e67 100644
--- a/public/react/src/modules/courses/elearning/YslDetailCards.js
+++ b/public/react/src/modules/courses/elearning/YslDetailCards.js
@@ -34,13 +34,30 @@ class YslDetailCards extends Component{
 	};
 	startgameid=(id)=>{
 		// 上面传过来的方法是用来没登入弹出弹框的
-		this.props.Tojoinclass();
+    try {
+			let {userlogin} = this.props;
+			if (userlogin === undefined) {
+				this.props.Tojoinclass();
+				return
+			}
+			if (userlogin === "") {
+				this.props.Tojoinclass();
+				return;
+			}
+		}catch (e) {
 
-		if(this.props.isNotMember()===true){
-			//这个是外部传过来的
-			this.props.Startlearningtwo();
-			return
 		}
+
+     try {
+			 if(this.props.isNotMember()===true){
+				 //这个是外部传过来的
+				 this.props.Startlearningtwo();
+				 return
+			 }
+		 }catch (e) {
+
+		 }
+
 		let url = "/shixuns/" + id + "/shixun_exec.json";
 		axios.get(url).then((response) => {