From 8fa0d0eb7eaad7dffd272bd7fd2485c8834dc61d Mon Sep 17 00:00:00 2001
From: cxt <853663049@qq.com>
Date: Tue, 7 Jan 2020 16:52:44 +0800
Subject: [PATCH] =?UTF-8?q?=E8=AF=BE=E5=A0=82=E7=BB=9F=E8=AE=A1=E6=A8=A1?=
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---
 app/controllers/courses_controller.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index a59ecb543..599a4440c 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -1554,7 +1554,7 @@ class CoursesController < ApplicationController
   end
 
   def course_statistics course, max_exp, limit
-    max_rate = max_exp.nil? || max_exp == 0 ? 0 : 20.0 / max_exp
+    max_rate = max_exp.nil? || max_exp <= 0 ? 0 : 20.0 / max_exp
 
     sql_select = %Q{ SELECT a.*, (message_num*0.2 + message_reply_num*0.1 + resource_num*0.5 + homework_journal_num*0.1 + graduation_num +
                   homework_num + exercise_num + poll_num*0.7 + exercise_score * 0.7 + graduation_score * 0.7 + homework_score * 0.7 + exp*#{max_rate})