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Technical Articles

PHP Framework

Laravel

When to use a Service Layer in Laravel.

When the controller responsibilities in the Laravel project are confused, duplicate logic occurs, good testing and integration of external systems are required, ServiceLayer should be introduced. 1. When the controller is too bloated, the business logic should be withdrawn from the Service class and only the request response processing should be retained; 2. When multiple controllers need to call the same logic, they should be encapsulated as reusable services; 3. In order to improve testability and decoupling capabilities, the Service should be used through dependency injection; 4. When third-party services or asynchronous tasks are involved, the Service should handle interaction and exception mechanisms uniformly.

Jul 21, 2025 am 02:16 AM

laravel

How to define and use Route Groups in Laravel.

RouteGroups in Laravel are used to uniformly configure and manage routing of multiple shared settings to reduce duplicate code and improve readability. RouteGroups can centrally handle middleware, namespace, routing prefix, subdomain name binding and other configurations, such as: 1. Use prefix to set routing prefix, which is often used in API or background paths; 2. Unified middleware application through middleware; 3. Use namespace to simplify controller calls; 4. Use domain to implement subdomain name routing; 5. Support nested routing groups to achieve finer granular control; 6. Provide unified prefix for route naming with the as parameter to improve maintenance efficiency.

Jul 21, 2025 am 02:15 AM

laravel routing group

Using Chainable Jobs in Laravel.

ChainableJob is a queue mechanism in Laravel for sequential execution of tasks. Its core purpose is to link multiple tasks together to execute them in sequence, ensuring that the next task is executed only after the previous task is completed. The method of using is to organize tasks through the Bus::chain() method. Note when using: 1. Each job should be run independently and does not depend on memory status; 2. Process failure logic, set retry or listen for failure events; 3. The results can be passed through parameters between jobs. In addition, by default, all jobs are pushed to the same queue. If different queues are required, they can be configured manually, but may affect priority recognition. Job link failures can be processed through failed() method or global listening, and should be combined with logging to avoid silent failures. Job link

Jul 21, 2025 am 01:45 AM

laravel queue

Using Named Routes in Laravel.

The name of routes in Laravel is mainly to improve code readability and reduce maintenance problems caused by hard-coded paths. By specifying a unique name for the route, you can use route() or redirect()->route() and other methods to refer to the route. Even if the URL path changes, the link will still work normally; 1. The naming method is to call the ->name('name_here') method when defining the route; 2. Common naming methods include controller action methods (such as 'user.index') and naming them by functional modules (such as 'dashboard'); 3. You can combine routing packets and prefixes to avoid duplication; 4. The main application scenarios include Blade template generation

Jul 21, 2025 am 01:44 AM

laravel routing

Explain Lazy Loading vs Eager Loading in Laravel.

The core difference between LazyLoading and EagerLoading is the timing of loading associated data. LazyLoading is the default behavior, and the database is only queried when accessing associations. It is suitable for scenarios where the associated data is not sure whether to use association data; EagerLoading loads association data in advance through with() to avoid N 1 query problems, and is suitable for scenarios where the associated fields are accessed in batch display or loops. The selection method should be based on specific needs: multiple model association data need to be displayed, associations are clearly used, or EagerLoading is preferred when accessing in a loop; associations are not necessarily useful, LazyLoading can be considered when accessing a single model association. Can be load() method

Jul 21, 2025 am 01:41 AM

laravel load

What is the difference between Laravel and Symfony?

Laravel is suitable for rapid development, while Symfony is suitable for large enterprise applications. Laravel is known for its simplicity and ease of use. It provides out-of-the-box tools such as authentication, routing and caching, which are suitable for rapid prototyping of startup teams; 1. Symfony adopts component-driven design, providing highly customized capabilities, and is suitable for enterprise-level projects that require long-term maintenance; 2. Laravel has clear structural agreements, reducing decision-making burden, and is suitable for beginners to get started quickly, while Symfony does not force directory structure and coding style, giving developers greater freedom but requires higher experience; 3. Laravel relies on service providers and facade management dependencies, and Symfony uses dependencies for dependencies and modular Bundles to achieve flexible architecture; 4. Laravel

Jul 21, 2025 am 01:13 AM

Using the Translator facade for Localization in Laravel.

TheTranslatorfacadeinLaravelisusedforlocalizationbyfetchingtranslatedstringsandswitchinglanguagesatruntime.Touseit,storetranslationstringsinlanguagefilesunderthelangdirectory(e.g.,en,es,fr),thenretrievethemviaLang::get()orthe__()helperfunction,suchas

Jul 21, 2025 am 01:06 AM

php java

How to add a new package to Laravel using Composer?

The most common way to add new packages to Laravel projects is through Composer. 1. First search to confirm the package name and applicability, such as searching for "laravelpermission package" in Packagist or Google to find spatie/laravel-permission. 2. Run the installation command such as composerrequirespatie/laravel-permission in the project root directory. Composer will automatically download the package and its dependencies and update the relevant files. 3. If using Laravel5.5 versions or packages before do not support automatic discovery, you need to manually register the service provider in config/a

Jul 21, 2025 am 12:46 AM

Optimizing Laravel Application Performance.

ToimproveLaravelapplicationperformance,startwithcaching,optimizedatabasequeries,minimizeassets,andmaintaincleancode.1.Useroute,config,andviewcaching,andleverageRedisorMemcachedforcomplexdata.2.Optimizequeriesusingeagerloading,avoidN 1queries,indexkey

Jul 21, 2025 am 12:45 AM

Performance optimization

How to create a REST API with Laravel?

Create a RESTAPI using Laravel through the following steps: 1. Create a project and configure a database connection, and start a development server; 2. Use the Artisan command to generate models, migrate files and test data, and run migration to create data tables; 3. Define resource routes in routes/api.php, generate controllers and implement index, store, show, update, destroy methods; 4. The controller method directly returns data or uses response()->json() to output JSON format response; 5. Use validate method to verify the input data and automatically handle the error response of verification failure; 6. Optionally use AP

Jul 21, 2025 am 12:28 AM

Understanding the Request Lifecycle in Laravel?

Laravel's request life cycle starts from public/index.php, passes through routing and middleware, then to the controller to process business logic, and finally returns the response through exception processing. 1. All requests are first captured by public/index.php and encapsulated into Request objects, and start Laravel core service; 2. After routing matching, the request is processed by middleware such as authentication, CSRF protection, etc. If the middleware returns a response, the subsequent process will be terminated; 3. The request arrives at the controller method to execute business logic, rely on automatic injection, and an exception may be thrown; 4. The exception is captured by the global exception processor, and the error response can be customized, and the response can be generated and returned to the browser.

Jul 20, 2025 am 04:08 AM

How does Laravel Middleware function?

Middleware in Laravel is a mechanism for filtering HTTP requests that are used to check or modify requests before a request arrives at a route, or to adjust before the response returns to the browser. It is divided into two types: global middleware and routing middleware. The former is applied to all requests, and the latter is applied to specific routes only. You can create custom middleware through phpartisanmake:middleware and write logical processing requests in the handle() method, such as verifying user permissions. After creation, you need to register in Kernel.php and apply to the specific route through ->middleware(). Middleware can receive parameters or be used in groups for more flexible control. Pay attention when using

Jul 20, 2025 am 04:06 AM

php

How to handle file uploads in Laravel.

The key to handling Laravel file upload is to master the three steps of receiving, verifying and storing. 1. Receive files through the Request object and ensure that the form is set to enctype="multipart/form-data"; 2. Verify files using the $request->validate() method, which can specify file type, size and other rules, such as required|image|mimes:jpeg,png,jpg,gif|max:2048; 3. Use the store() method to store files, which is stored in storage/app by default. If you use public disk, you need to run phparti.

Jul 20, 2025 am 04:04 AM

laravel File Upload

How to handle exceptions and errors in Laravel?

The core of Laravel's exception handling lies in mastering key points such as Handler classes, custom error pages, active exception capture, and logging. 1. Exception handling is centrally managed by the App\Exceptions\Handler class. Exceptions are recorded through report, and the render returns the response; 2. Custom error pages need to create a Blade template with corresponding status code in resources/views/errors/, which is only applicable to web requests; 3. Use try-catch to actively catch specific exceptions. It is recommended to catch specific types instead of general Exceptions and record logs; 4. Laravel uses Monolog to record logs by default, and the path is s

Jul 20, 2025 am 04:03 AM