From f14bf75b307fb7f3ae90ea8d9c16f75f2789fb36 Mon Sep 17 00:00:00 2001 From: cxt <853663049@qq.com> Date: Tue, 28 May 2019 09:15:13 +0800 Subject: [PATCH] =?UTF-8?q?=E7=BB=9F=E8=AE=A1=E8=B0=83=E6=95=B4?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- app/controllers/colleges_controller.rb | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/app/controllers/colleges_controller.rb b/app/controllers/colleges_controller.rb index 1ffcdb46..ad831e78 100644 --- a/app/controllers/colleges_controller.rb +++ b/app/controllers/colleges_controller.rb @@ -50,7 +50,8 @@ class CollegesController < ApplicationController # Redo：这样做内存会卡死的 # user_ids = User.find_by_sql("SELECT users.id FROM users LEFT JOIN user_extensions ON users.id=user_extensions.user_id WHERE user_extensions.`school_id` = #{@school.id}").map(&:id) # Redo：是否直接使用count会更好 - all_course_ids = Course.joins("join users u on courses.tea_id = u.id").joins("join user_extensions ue on u.id = ue.user_id").where("courses.id != 1309 and ue.school_id = #{@school.id}") + all_course_ids = Course.joins("join users u on courses.tea_id = u.id").joins("join user_extensions ue on u.id = ue.user_id"). + where("courses.id != 1309 and courses.is_delete = 0 and ue.school_id = #{@school.id}") @courses_count = all_course_ids.size # Redo：对于量比较大的尽量不使用笛卡尔积