课堂统计模块报错

5 years ago · b46a84ebf6
parent 7cd8a6eeb8
commit b46a84ebf6
1 changed files with 1 additions and 1 deletions
--- 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? ? 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})