Home Backend Development PHP Tutorial 自个儿动手写 PHP acts_as_taggable_on 实现

自个儿动手写 PHP acts_as_taggable_on 实现

Jun 13, 2016 pm 01:20 PM
count id post tag

自己动手写 PHP acts_as_taggable_on 实现

写道
这个功能不怎么好总结,看了很多PHP相关的资料 感觉都木有讲清楚,ZF和orm的实现又过于臃肿....

只好 参阅rails的acts_as_taggable_on 说白了 核心就一个sql

select post.*,count(tag.id) as count

from post,tag,taging

where post.id!={当前post.id} #排除自身
and post.id=taging.post_id #限定标签的范围为当前post所拥有的标签集合
and taging.tag_type=post.base_class #限定标签类型为当前post的基本类型
and taging.tag_id=tag.id #限定必须是有效的标签
and tag.name in ({当前post拥有的标签})

group by post.id
order by count desc

鄙视 某些人 教程说完一半后面就没了...

简单的东西都复杂话了 ?
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

This Apple ID is not yet in use in the iTunes Store: Fix This Apple ID is not yet in use in the iTunes Store: Fix Jun 10, 2024 pm 05:42 PM

When logging into iTunesStore using AppleID, this error saying "This AppleID has not been used in iTunesStore" may be thrown on the screen. There are no error messages to worry about, you can fix them by following these solution sets. Fix 1 – Change Shipping Address The main reason why this prompt appears in iTunes Store is that you don’t have the correct address in your AppleID profile. Step 1 – First, open iPhone Settings on your iPhone. Step 2 – AppleID should be on top of all other settings. So, open it. Step 3 – Once there, open the “Payment & Shipping” option. Step 4 – Verify your access using Face ID. step

Fix event ID 55, 50, 98, 140 disk error in event viewer Fix event ID 55, 50, 98, 140 disk error in event viewer Mar 19, 2024 am 09:43 AM

If you find event ID 55, 50, 140 or 98 in the Event Viewer of Windows 11/10, or encounter an error that the disk file system structure is damaged and cannot be used, please follow the guide below to resolve the issue. What does Event 55, File system structure on disk corrupted and unusable mean? At session 55, the file system structure on the Ntfs disk is corrupted and unusable. Please run the chkMSK utility on the volume. When NTFS is unable to write data to the transaction log, an error with event ID 55 is triggered, which will cause NTFS to fail to complete the operation unable to write the transaction data. This error usually occurs when the file system is corrupted, possibly due to the presence of bad sectors on the disk or the file system's inadequacy of the disk subsystem.

Where can I find Alibaba ID? Where can I find Alibaba ID? Mar 08, 2024 pm 09:49 PM

In Alibaba software, once you successfully register an account, the system will assign you a unique ID, which will serve as your identity on the platform. But for many users, they want to query their ID, but don't know how to do it. Then the editor of this website will bring you detailed introduction to the strategy steps below. I hope it can help you! Where can I find the answer to Alibaba ID: [Alibaba]-[My]. 1. First open the Alibaba software. After entering the homepage, we need to click [My] in the lower right corner; 2. Then after coming to the My page, we can see [id] at the top of the page; Alibaba Is the ID the same as Taobao? Alibaba ID and Taobao ID are different, but the two

Where to check Tencent Video ID Where to check Tencent Video ID Feb 24, 2024 pm 06:25 PM

Where can I check the Tencent Video ID? There is an exclusive ID in the Tencent Video APP, but most users do not know how to check the Tencent Video ID. Next is the graphic tutorial on how to check the Tencent Video ID brought by the editor for users who are interested. Users come and take a look! Tencent Video Usage Tutorial Where to check Tencent Video ID 1. First open the Tencent Video APP and enter the special area through [Personal Center] in the lower right corner of the main page; 2. Then enter the Personal Center page and select the [Settings] function; 3. Then go to Settings page, click [Exit Account] at the bottom; 4. Finally, you can view the exclusive ID number on the page shown below.

Event ID 4660: Object deleted [Fix] Event ID 4660: Object deleted [Fix] Jul 03, 2023 am 08:13 AM

Some of our readers encountered event ID4660. They're often not sure what to do, so we explain it in this guide. Event ID 4660 is usually logged when an object is deleted, so we will also explore some practical ways to fix it on your computer. What is event ID4660? Event ID 4660 is related to objects in Active Directory and will be triggered by any of the following factors: Object Deletion – A security event with Event ID 4660 is logged whenever an object is deleted from Active Directory. Manual changes – Event ID 4660 may be generated when a user or administrator manually changes the permissions of an object. This can happen when changing permission settings, modifying access levels, or adding or removing people or groups

A brief analysis of the POST method in PHP with parameters to jump to the page A brief analysis of the POST method in PHP with parameters to jump to the page Mar 23, 2023 am 09:15 AM

For PHP developers, using POST to jump to pages with parameters is a basic skill. POST is a method of sending data in HTTP. It can submit data to the server through HTTP requests. The jump page processes and jumps the page on the server side. In actual development, we often need to use POST with parameters to jump to pages to achieve certain functional purposes.

The difference between counta and count The difference between counta and count Nov 20, 2023 am 10:01 AM

The Count function is used to count the number of numbers in a specified range. It ignores text, logical values, and null values, but counts empty cells. The Count function only counts the number of cells that contain actual numbers. The CountA function is used to count the number of non-empty cells in a specified range. It not only counts cells containing actual numbers, but also counts the number of non-empty cells containing text, logical values, and formulas.

How to determine whether a post has been submitted in PHP How to determine whether a post has been submitted in PHP Mar 21, 2023 pm 07:12 PM

PHP is a widely used server-side scripting language that can be used to create interactive and dynamic web applications. When developing PHP applications, we usually need to submit user input data to the server for processing through forms. However, sometimes we need to determine whether form data has been submitted in PHP. This article will introduce how to make such a determination.

See all articles