增加未登录用户不可通过首页加入课程按钮加入相应课程

app/controllers/courses_controller.rb

@@ -39,6 +39,8 @@ class CoursesController < ApplicationController
       else
         @state = 3
       end
+    else
+      @state = 4
     end
     respond_to do |format|
       # format.html { redirect_to_referer_or {render :text => (watching ? 'Watcher added.' : 'Watcher removed.'), :layout => true}}

app/views/courses/_set_join.js.erb

@@ -3,16 +3,18 @@
 <% end %>
 <% if @state %>
 	<% if @state == 0 %>
-		alert("加入成功")
+		alert("加入成功");
 	<% elsif @state == 1 %>
-		alert("密码错误")
+		alert("密码错误");
 	<% elsif @state == 2 %>
-		alert("课程已过期\n请联系课程管理员重启课程。(在配置课程处)")
+		alert("课程已过期\n请联系课程管理员重启课程。(在配置课程处)");
 	<% elsif @state == 3 %>
         alert("您已经加入了课程");
-    <% elsif @state == 3 %>
-        alert("您已经的课程不存在")
+    <% elsif @state == 4 %>
+        alert("您已经的课程不存在");
+    <% elsif @state == 4 %>
+        alert("您还未登录");
     <% else %>
-		alert("未知错误，请稍后再试")
+		alert("未知错误，请稍后再试");
 	<% end %>
 <% end %>

app/views/welcome/_more_course.html.erb

@@ -4,7 +4,8 @@
                     :class => 'icon icon-add') if User.current.allowed_to?(:add_course,nil, :global => true) %>
     <% end %>
     &nbsp;&nbsp;&nbsp;&nbsp;
+    <%= link_to l(:label_course_join_student), join_private_courses_courses_path ,:remote => true, :class => 'icon icon-add' %>
+    &nbsp;&nbsp;&nbsp;&nbsp;
 <% end %>
-<%= link_to l(:label_course_join_student), join_private_courses_courses_path ,:remote => true, :class => 'icon icon-add' %>
-&nbsp;&nbsp;&nbsp;&nbsp;
+
 <%= link_to l(:label_more), {:controller => 'courses', :action => 'index', :school_id => school_id} %>