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Technical Articles

PHP Framework

Laravel

How to set up subdomain routing in Laravel?

TosetupsubdomainroutinginLaravel,useroutegroupswiththedomainparameter.1.DefinesubdomainroutesusingRoute::domain('subdomain.example.com')andwraprelatedroutesinagroup.2.Optionally,userouteparameterslike{tenant}.example.comtodynamicallycapturesubdomainn

Jul 24, 2025 am 02:23 AM

What is the purpose of Route::view in Laravel?

Route::view is used in Laravel to return views directly from routes, for static pages or simple data passing without a controller. When there is no need to process logic, such as displaying the /about page, you can use Route::view('/about','about') one-line code to replace the controller method; when you need to pass data, such as Route::view('/welcome','welcome',['name'=>'John']), you can pass data into the view; in addition, it makes the routing file more concise and avoids redundant closures or controllers; but it is not suitable for scenarios where database queries, form processing, authentication or modification of response headers, you should use it at this time.

Jul 24, 2025 am 02:12 AM

Creating and Running Database Migrations in Laravel?

Laravel database migration is created and run through the Artisan command to manage database structure changes. 1. Use phpartisanmake:migration to generate migration files, such as creating tables or adding fields; 2. Define structure changes in the up() method and define rollback operations in down(); 3. Build table structure through Schema::create() or Schema::table() and pay attention to field details; 4. Use phpartisanmigrate to run migration, which supports specified paths, database connections and other parameters; 5. You can use migrate:reset or migrate:fresh to reset the structure; 6. Recommended

Jul 24, 2025 am 01:58 AM

Using Queues with Redis or Database driver in Laravel.

When using queues in Laravel, choosing Redis or database depends on project requirements and running environment. 1. In terms of performance, Redis is more suitable for high-concurrency and low-latency scenarios, because its memory operations support high-speed read and write, atomic operations and publish/subscribe mechanisms, while the database is prone to table locking when concurrency is high; 2. In terms of maintenance costs, the database is suitable for small projects or development and testing environments, and no additional services are required. Redis is recommended for production environments for better stability and scalability; 3. In terms of configuration, you only need to modify the .env file to switch drivers. Using Redis requires installation of services and extensions and configuration of connection information, while the database needs to generate jobs tables and does not support delay tasks; 4. In terms of failure handling, both support any

Jul 24, 2025 am 01:39 AM

laravel queue

How to export data to Excel or CSV in Laravel?

To implement exporting data as an Excel or CSV file in Laravel, the most efficient way is to use the maatwebsite/excel package. 1. Install the LaravelExcel package: run composerrequiremaatwebsite/excel, and optionally publish configuration files. 2. Create an export class: Use phpartisanmake:exportUsersExport--model=User to generate the export class, and define the data query in the collection method, and set the header in the headings method. 3. Create controller and route: Generate ExportController and

Jul 24, 2025 am 12:49 AM

laravel Data output

How to handle form validation in Laravel?

There are four common ways to handle form verification in Laravel, which are suitable for different scenarios. 1. The validate() method in the controller is suitable for small and medium-sized projects, which can quickly verify fields and automatically redirect error information; 2. The form request class is suitable for complex logic or multiple reuse scenarios, making the controller more concise and easy to maintain; 3. Custom verification rules can be implemented through closures or Rule classes, and can customize error prompts to improve user experience; 4. The front-end displays error information through the Blade template, which can display field errors separately or summarize all errors. Choose the appropriate method according to the complexity of the project, and the verification rules should be as clear and complete as possible.

Jul 24, 2025 am 12:44 AM

Explain Laravel Events and Listeners functionality.

Laravel's Events and Listeners are used to decouple application modules. Events indicate "what happened", such as user registration or order payment; listeners define "what to do", such as sending emails or logging. 1. The event class is stored in app/Events, carrying relevant information; 2. The listener is stored in app/Listeners, responding to events through handle methods; 3. Bind events and listeners in EventServiceProvider, or use automatic discovery mechanism; 4. Use event() or dispatch() to trigger events; 5. The listener can implement asynchronous processing, just add the ShouldQueue interface. This mechanism improves code clearance

Jul 23, 2025 am 03:22 AM

How to compile assets with Laravel Mix?

LaravelMixsimplifiesassetcompilationforLaraveldevelopersbyabstractingWebpackcomplexities.Togetstarted,installitvianpminstalllaravel-mix--save-devandcreateawebpack.mix.jsfile.Thendefineyourassetsourcesandoutputpathslikemix.js('resources/js/app.js','pu

Jul 23, 2025 am 03:01 AM

Difference between `make()` and dependency injection via type-hinting in Laravel.

Thedifferencebetweenmake()andtype-hintedinjectioninLaravelliesintheirusageandimpactoncodedesign.1.make()manuallyresolvesaclassviathecontainer,oftenusedinclosuresorlegacycodeforconditionalinstantiationbutcanleadtotightercouplingandhiddendependencies.2

Jul 23, 2025 am 02:56 AM

laravel dependency injection

How to set up Laravel queues with Redis?

TosetupLaravelqueueswithRedis,firstinstallandconfigureRedisonyourserverorlocalenvironment,usingcommandslikesudoaptinstallredisforUbuntu/DebianorbrewinstallredisformacOS,thenstarttheRedisserver.Second,configurethequeuedriverinLaravelbysettingQUEUE_CON

Jul 23, 2025 am 02:50 AM

How to group routes in Laravel?

When organizing a large number of routes in Laravel, you can use routing groups to classify and manage them by modules, middleware, prefixes, etc. to improve code maintainability. 1. Use prefix to group by prefix, such as classifying background routes to /admin; 2. Use middleware to uniformly add middleware to multiple routes, such as auth or combined middleware; 3. Use namespace to specify the controller directory for easy modular management; 4. You can combine prefix, middleware and namespace to achieve a clear and efficient routing organization method.

Jul 23, 2025 am 02:40 AM

How to define an optional route parameter in Laravel?

The methods for defining optional routing parameters in Laravel are as follows: 1. Add ? after the routing parameters to indicate optional, such as {name?}; 2. Set default values for parameters in the controller or closure to avoid errors; 3. Optional parameters must be at the end of the route to ensure correct resolution; 4. When using named routes, you can generate links by omitting parameters or leaving empty array items. Through these steps, optional parameters can be handled flexibly and avoid common problems such as parameter order errors or type prompt conflicts.

Jul 23, 2025 am 02:39 AM

Writing Unit and Feature Tests in Laravel.

ThemaindifferencebetweenunitandfeaturetestsinLaravelisthatunittestsfocusonisolatedcomponentslikeclassesormethods,whilefeaturetestssimulateuserinteractions.Unittestscheckinternallogicsuchasamethodreturningthecorrectvalue,arefast,anddonotinvolveHTTPreq

Jul 23, 2025 am 02:38 AM

laravel unit test

How to debug a Laravel application?

The key points of debugging Laravel applications include: 1. Turn on debug mode, set APP_DEBUG=true through the .env file to display detailed error information; 2. Use Log::info() and dd() to view variable content; 3. Check storage/logs/laravel.log log file to track exceptions and queries; 4. Enable DB::enableQueryLog() to check SQL query performance problems; 5. Install the LaravelDebugbar plug-in to improve debugging efficiency. These methods can help quickly locate and solve problems in development.

Jul 23, 2025 am 02:28 AM