Backend Development
PHP Tutorial
A brief discussion on custom dependency injection of lumen framework
A brief discussion on custom dependency injection of lumen framework
This article mainly talks about custom dependency injection of lumen framework. The editor thinks it’s pretty good, so I’d like to share it with you today for your reference. Let’s follow the editor to have a look, I hope it will be helpful to everyone.
For example, I now have a token authentication system. Currently I use mysql token table to implement it. It may be changed to redis in the future. How can I achieve seamless connections in the future?
First define a contract file app/Contracts/TokenHandler.php
<?php
namespace App\Contracts;
/**
* 处理Token的Contracts
* @package App\Contracts
*/
interface TokenHandler
{
/**
* 创建一个token
* @param $userId integer 用户Id
* @return string
*/
public function createToken($userId);
/**
* 得到该token的用户
* @param $token string token值
* @return \App\User 拥有该token的用户
*/
public function getTokenUser($token);
/**
* 删除一个token
* @param $token string token值
* @return bool 是否成功
*/
public function removeToken($token);
}There are 3 methods defined here: create token and get the token corresponding User, delete token.
Then we write an implementation app/Services/MysqlTokenHandler.php under Mysql
<?php
namespace App\Services;
use App\Contracts\TokenHandler;
use App\Orm\Token;
/**
* 处理Token的Contracts对应的Mysql Service
* @package App\Services
*/
class MysqlTokenHandler implements TokenHandler
{
/**
* @var int 一个用户能够拥有的token最大值
*/
protected $userTokensMax = 10;
/**
* @inheritdoc
*/
public function createToken($userId)
{
while (Token::where('user_id', $userId)->count() >= $this->userTokensMax) {
Token::where('user_id', $userId)->orderBy('updated_at', 'asc')->first()->delete();
}
$token = \Illuminate\Support\Str::random(32);
if (!Token::create(['token' => $token, 'user_id' => $userId])) {
return false;
}
return $token;
}
/**
* @inheritdoc
*/
public function getTokenUser($token)
{
$tokenObject = Token::where('token', $token)->first();
return $tokenObject && $tokenObject->user ? $tokenObject->user : false;
}
/**
* @inheritdoc
*/
public function removeToken($token)
{
return Token::find($token)->delete();
}
}Then bind the mapping relationship between the two in bootstrap/app.php:
$app->singleton( App\Contracts\TokenHandler::class, App\Services\MysqlTokenHandler::class );
If you switch to redis in the future, you only need to rewrite the implementation of RedisTokenHandler and rebind it. The specific business logic code does not need to be changed.
So you can directly inject the object instance in the controller, as long as you declare the contract type before the parameters:
public function logout(Request $request, TokenHandler $tokenHandler)
{
if ($tokenHandler->removeToken($request->input('api_token'))) {
return $this->success([]);
} else {
return $this->error(Lang::get('messages.logout_fail'));
}
}You can also manually get the instance of the injected object in the code, such as:
$currentUser = app(\App\Contracts\TokenHandler::class)->getTokenUser($request->input('api_token'));
Related recommendations:
laravel writes APP interface (API)
Explore how Laravel’s middleware is implemented
The above is the detailed content of A brief discussion on custom dependency injection of lumen framework. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How to quickly set up a custom avatar in Netflix
Feb 19, 2024 pm 06:33 PM
An avatar on Netflix is a visual representation of your streaming identity. Users can go beyond the default avatar to express their personality. Continue reading this article to learn how to set a custom profile picture in the Netflix app. How to quickly set a custom avatar in Netflix In Netflix, there is no built-in feature to set a profile picture. However, you can do this by installing the Netflix extension on your browser. First, install a custom profile picture for the Netflix extension on your browser. You can buy it in the Chrome store. After installing the extension, open Netflix on your browser and log into your account. Navigate to your profile in the upper right corner and click
How to customize background image in Win11
Jun 30, 2023 pm 08:45 PM
How to customize background image in Win11? In the newly released win11 system, there are many custom functions, but many friends do not know how to use these functions. Some friends think that the background image is relatively monotonous and want to customize the background image, but don’t know how to customize the background image. If you don’t know how to define the background image, the editor has compiled the steps to customize the background image in Win11 below. If you are interested If so, take a look below! Steps for customizing background images in Win11: 1. Click the win button on the desktop and click Settings in the pop-up menu, as shown in the figure. 2. Enter the settings menu and click Personalization, as shown in the figure. 3. Enter Personalization and click on Background, as shown in the picture. 4. Enter background settings and click to browse pictures
How to create and customize Venn diagrams in Python?
Sep 14, 2023 pm 02:37 PM
A Venn diagram is a diagram used to represent relationships between sets. To create a Venn diagram we will use matplotlib. Matplotlib is a commonly used data visualization library in Python for creating interactive charts and graphs. It is also used to create interactive images and charts. Matplotlib provides many functions to customize charts and graphs. In this tutorial, we will illustrate three examples to customize Venn diagrams. The Chinese translation of Example is: Example This is a simple example of creating the intersection of two Venn diagrams; first, we imported the necessary libraries and imported venns. Then we create the dataset as a Python set, after that we use the "venn2()" function to create
How to customize shortcut key settings in Eclipse
Jan 28, 2024 am 10:01 AM
How to customize shortcut key settings in Eclipse? As a developer, mastering shortcut keys is one of the keys to improving efficiency when coding in Eclipse. As a powerful integrated development environment, Eclipse not only provides many default shortcut keys, but also allows users to customize them according to their own preferences. This article will introduce how to customize shortcut key settings in Eclipse and give specific code examples. Open Eclipse First, open Eclipse and enter
How to create custom pagination in CakePHP?
Jun 04, 2023 am 08:32 AM
CakePHP is a powerful PHP framework that provides developers with many useful tools and features. One of them is pagination, which helps us divide large amounts of data into several pages, making browsing and manipulation easier. By default, CakePHP provides some basic pagination methods, but sometimes you may need to create some custom pagination methods. This article will show you how to create custom pagination in CakePHP. Step 1: Create a custom pagination class First, we need to create a custom pagination class. this
How to enable and customize crossfades in Apple Music on iPhone with iOS 17
Jun 28, 2023 pm 12:14 PM
The iOS 17 update for iPhone brings some big changes to Apple Music. This includes collaborating with other users on playlists, initiating music playback from different devices when using CarPlay, and more. One of these new features is the ability to use crossfades in Apple Music. This will allow you to transition seamlessly between tracks, which is a great feature when listening to multiple tracks. Crossfading helps improve the overall listening experience, ensuring you don't get startled or dropped out of the experience when the track changes. So if you want to make the most of this new feature, here's how to use it on your iPhone. How to Enable and Customize Crossfade for Apple Music You Need the Latest
How to implement custom middleware in CodeIgniter
Jul 29, 2023 am 10:53 AM
How to implement custom middleware in CodeIgniter Introduction: In modern web development, middleware plays a vital role in applications. They can be used to perform some shared processing logic before or after the request reaches the controller. CodeIgniter, as a popular PHP framework, also supports the use of middleware. This article will introduce how to implement custom middleware in CodeIgniter and provide a simple code example. Middleware overview: Middleware is a kind of request
render function in Vue3: custom rendering function
Jun 18, 2023 pm 06:43 PM
Vue is a popular JavaScript framework that provides many convenient functions and APIs to help developers build interactive front-end applications. With the release of Vue3, the render function has become an important update. This article will introduce the concept and purpose of the render function in Vue3 and how to use it to customize the rendering function. What is the render function? In Vue, template is the most commonly used rendering method, but in Vue3, you can use another method: r
