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Technical Articles

PHP Framework

How to handle AJAX requests in Laravel with jQuery?

Define the route and controller to handle AJAX requests, 2. Add CSRF token meta tags in the Blade template, 3. Use jQuery to send a POST request carrying CSRF tokens and process the response, 4. Return JSON format response in Laravel and properly handle verification errors, 5. It is recommended to use axios instead of jQuery to obtain better modern JavaScript support. The entire process ensures the security and reliability of AJAX requests, and each step needs to be implemented correctly to ensure complete functions.

Jul 27, 2025 am 12:10 AM

laravel ajax

How to implement JWT authentication in Laravel?

Install the tymon/jwt-auth package; 2. Release JWT configuration files; 3. Generate JWT keys and configure .env; 4. The user model implements the JWTSubject interface; 5. Set up JWTguard in the auth configuration; 6. Create a controller that includes login, logout, refresh and obtaining user information; 7. Define routes in api.php and apply auth:api middleware; 8. Request protected routes through Authorization:Bearer to complete the authentication process. The entire process needs to ensure that JWT_SECRET is secure and the input verification is strictly implemented, and finally implement stateless API authentication based on JWT in Laravel.

Jul 26, 2025 am 09:32 AM

Contextual Binding in the Laravel Service Container.

ContextualBinding is a mechanism in Laravel service container that determines dependency injection based on the call context, allowing different classes to inject different implementations when relying on the same interface; its usage includes: 1. Specify the target class to bind the corresponding interface implementation, such as binding the StripePaymentProcessor for AController; 2. Multiple classes or multiple interfaces can be bound at the same time, such as uniformly handling the dependency of AController and BService on LoggerInterface; applicable scenarios include: different modules use different interface implementations, test environment injection simulated dependencies, and differentiated configuration of multi-tenant applications; attention should be paid to the binding order when using it, and automatic solution should be avoided.

Jul 26, 2025 am 09:17 AM

laravel

How to create a helper file in Laravel?

Createahelpers.phpfileinapp/HelperswithcustomfunctionslikeformatPrice,isActiveRoute,andisAdmin.2.Addthefiletothe"files"sectionofcomposer.jsonunderautoload.3.Runcomposerdump-autoloadtomakethefunctionsgloballyavailable.4.Usethehelperfunctions

Jul 26, 2025 am 08:58 AM

laravel

What are view composers in Laravel?

ViewcomposersinLaravelareusedtoautomaticallybinddatatoviews,keepingcontrollerscleanandavoidingrepeatedcode.1.CreateaserviceproviderlikeViewComposerServiceProviderandregisteritinconfig/app.php.2.Inthebootmethod,useView::composertoattachdatatoaspecific

Jul 26, 2025 am 08:33 AM

Using Events and Listeners in Laravel.

Using events and listeners in Laravel is an effective way to decouple main logic. 1. Create events and listeners can be generated and bound to EventServiceProvider through the Artisan command or enable the automatic discovery mechanism. 2. In actual use, it is necessary to note that an event can correspond to multiple listeners, queue failure retry policy, keep the listener lightweight, and register event subscribers. 3. During testing and debugging, you should confirm the event triggering, listener binding, and queue drive status, and set QUEUE_CONNECTION=sync to perform synchronously to facilitate troubleshooting. 4. Advanced tips include dynamically controlling the execution or registration of the listener according to conditions, but it is recommended to advanced users. Mastering these key points can help improve code control

Jul 26, 2025 am 08:21 AM

laravel event listener

How to use the where() method on a Laravel route?

InLaravel,thewhere()methodisusedtoapplyconstraintstorouteparametersviaregularexpressions.1)Itensuresthatdynamicroutesegmentsmatchexpectedpatternsbeforearouteisconsideredamatch.2)Youcanapplyitdirectlyonarouteusing->where('parameter-name','regex'),s

Jul 26, 2025 am 08:19 AM

How to authenticate an API in Laravel?

To authenticate LaravelAPI, it is recommended to use LaravelSanctum. The specific steps are as follows: 1. Install Sanctum through Composer and publish configuration files and migrations; 2. Add EnsureFrontendRequestsAreStateful middleware for the api middleware group in Kernel.php; 3. Introduce HasApiTokenstrait in the User model; 4. Create login, get user and logout API routes, generate tokens and return when logging in; 5. Use auth:sanctum middleware to protect routes that need authentication; 6. In the Authorization header when requesting front-end

Jul 26, 2025 am 08:19 AM

laravel api

What causes a '419 PAGE EXPIRED' error in Laravel?

A419PAGEEXPIREDerrorinLaraveliscausedbyaCSRFtokenmismatchorexpirationduetomissing/invalidtokens,soalwaysinclude@csrfinformsandsendtheX-CSRF-TOKENheaderinAJAXrequests;2.Sessionexpirationtriggerstheerror,soincreaseSESSION_LIFETIMEorimplementsessionkeep

Jul 26, 2025 am 08:19 AM

How to use Vite in a Laravel project?

Integrating Vite in Laravel project can be achieved through the following steps: 1. Install Vite and laravel-vite-plugin plug-ins and related dependencies; 2. Create and configure vite.config.js files, set entry files and plug-ins; 3. Use the @vite directive to load resources in the Blade template; 4. Use the npm command to start the development server or build production environment resources; 5. Pay attention to path processing and plug-in configuration to support Vue, React and other frameworks. After correct configuration, Vite will greatly improve the front-end construction speed and optimize the hot update experience.

Jul 26, 2025 am 08:17 AM

Implementing Rate Limiting in Laravel.

Laravelprovidesbuilt-inandcustomizableratelimitingtoolstopreventAPIabuse.Youcanusethethrottlemiddlewareforbasiclimits,suchasallowing60requestsperminutewithRoute::middleware('throttle:60,1').Forrole-basedlimits,createacustommiddlewareinKernel.php,gene

Jul 26, 2025 am 07:56 AM

laravel Rate limit

How to create custom middleware in Laravel?

To create a custom middleware, first use the Artisan command to generate the middleware: phpartisanmake:middlewareCheckAge; then define logic in the handle method, for example, check whether the age is less than 18 and redirect to the homepage, otherwise call $next($request) to continue the request process; then register the middleware in the $routeMiddleware array of app/Http/Kernel.php, such as 'check.age'=>\App\Http\Middleware\CheckAge::class; finally use the middleware in the route, routing group, or controller, for example,

Jul 26, 2025 am 07:42 AM

How to create a controller in Laravel?

To create a Laravel controller, use the Artisan command. 1. Basic controller: Run phpartisanmake:controllerUserController to generate an empty controller; 2. Resource controller: Use phpartisanmake:controllerPostController--resource to create a controller containing CRUD methods, and register Route::resource('posts',PostController::class); 3. API controller: Run phpartisanmake:

Jul 26, 2025 am 07:25 AM

Explain Laravel Eloquent Scopes.

Laravel's EloquentScopes is a tool that encapsulates common query logic, divided into local scope and global scope. 1. The local scope is defined with a method starting with scope and needs to be called explicitly, such as Post::published(); 2. The global scope is automatically applied to all queries, often used for soft deletion or multi-tenant systems, and the Scope interface needs to be implemented and registered in the model; 3. The scope can be equipped with parameters, such as filtering articles by year or month, and corresponding parameters are passed in when calling; 4. Pay attention to naming specifications, chain calls, temporary disabling and combination expansion when using to improve code clarity and reusability.

Jul 26, 2025 am 07:22 AM

laravel eloquent