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优化SQL查询：1，members与users表关联查询； 2，blogs表单查询

This commit is contained in:
alan 2016-03-23 00:04:53 +08:00
parent e20fe85ddf
commit 9273e37a5b
2 changed files with 8 additions and 3 deletions
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7
app/controllers/users_controller.rb
View File

@ -1250,7 +1250,12 @@ class UsersController < ApplicationController
end end
else else
# @user_activities = UserActivity.where("(container_type = 'Project' and container_id in #{user_project_ids} and act_type in #{project_types}) or (container_type = 'Course' and container_id in #{user_course_ids} and act_type in #{course_types})or (container_type = 'Principal' and act_type= '#{principal_types}' and container_id = #{@user.id})").order('updated_at desc').limit(10).offset(@page * 10) # @user_activities = UserActivity.where("(container_type = 'Project' and container_id in #{user_project_ids} and act_type in #{project_types}) or (container_type = 'Course' and container_id in #{user_course_ids} and act_type in #{course_types})or (container_type = 'Principal' and act_type= '#{principal_types}' and container_id = #{@user.id})").order('updated_at desc').limit(10).offset(@page * 10)
blog_ids = "("+@user.blog.id.to_s+","+((User.watched_by(@user.id).count == 0 )? '0' :User.watched_by(@user.id).map{|u| u.blog.id}.join(','))+")" # blog_ids = "("+@user.blog.id.to_s+","+((User.watched_by(@user.id).count == 0 )? '0' :User.watched_by(@user.id).map{|u| u.blog.id}.join(','))+")"
# 减少数据库交互
user_ids = "(" + @user.id.to_s + "," + User.watched_by(@user.id).map{|u| u.id }.join(',') + ")"
watched_user_blog_ids = Blog.select("id").where("author_id in #{user_ids}").map { |blog| blog.id}.join(",")
blog_ids = "(" + watched_user_blog_ids + ")"
@user_activities = UserActivity.where("(container_type = 'Project' and container_id in #{user_project_ids} and act_type in #{project_types})" + @user_activities = UserActivity.where("(container_type = 'Project' and container_id in #{user_project_ids} and act_type in #{project_types})" +
"or (container_type = 'Course' and container_id in #{user_course_ids} and act_type in #{course_types}) "+ "or (container_type = 'Course' and container_id in #{user_course_ids} and act_type in #{course_types}) "+
"or (container_type = 'Principal' and act_type= '#{principal_types}' and container_id = #{@user.id}) " + "or (container_type = 'Principal' and act_type= '#{principal_types}' and container_id = #{@user.id}) " +

4
app/helpers/issues_helper.rb
View File

@ -111,9 +111,9 @@ module IssuesHelper
def principals_options_for_isuue_list(project) def principals_options_for_isuue_list(project)
if User.current.member_of?(project) if User.current.member_of?(project)
project.members.order("lower(users.login)").map{|c| [c.name, c.user_id]}.unshift(["<< #{l(:label_me)} >>", User.current.id]).unshift(["指派给", 0]) project.members.includes(:user).order("lower(users.login)").map{|c| [c.name, c.user_id]}.unshift(["<< #{l(:label_me)} >>", User.current.id]).unshift(["指派给", 0])
else else
project.members.order("lower(users.login)").map{|c| [c.name, c.user_id]}.unshift(["指派给", 0]) project.members.includes(:user).order("lower(users.login)").map{|c| [c.name, c.user_id]}.unshift(["指派给", 0])
end end
end end