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Home

Technical Articles

PHP Framework

Laravel

How to install a Laravel package?

InstallthepackageusingComposerwithcomposerrequirevendor/package-name.2.Mostpackagesauto-registerviaLaravel’spackageauto-discovery,somanualregistrationinconfig/app.phpisusuallyunnecessary.3.Publishconfiguration,migrations,orassetsusingphpartisanvendor

Aug 01, 2025 am 04:52 AM

What is the MVC pattern in Laravel?

TheMVCpatterninLaravelseparatesanapplicationintothreecomponents:1.Model–handlesdatalogicusingEloquentORMtointeractwiththedatabase,2.View–managestheuserinterfacewithBladetemplatesinresources/views,3.Controller–processesrequests,interactswithmodels,and

Aug 01, 2025 am 04:38 AM

laravel mvc mode

How to create custom helper functions in Laravel?

Create app/Helpers/helpers.php file and define functions such as formatPrice, isActiveRoute and uploadImage; 2. Add helpers.php path in autoload.files of composer.json; 3. Run composerdump-autoload to make the functions globally available; 4. Use these functions anywhere in view, controller, etc.; 5. If the functions increase, you can split multiple auxiliary files and register them to autoload.files; 6. Follow best practices to avoid logical complexity and naming conflicts, and ultimately achieve simple and efficient global function reuse.

Aug 01, 2025 am 03:29 AM

How to write unit and feature tests in Laravel?

Unittestsfocusonisolatedcomponentslikeservicemethods,whilefeaturetestscheckintegrateduserflowslikeformsubmissions.2.Laravel’stestsdirectoryincludesUnitandFeaturefolders,andtestsarerunusingphpartisantestwithoptional--testsuitefilters.3.Writeunittestsf

Aug 01, 2025 am 01:57 AM

laravel unit test

How to get the current logged-in user in Laravel?

Useauth()->user()orAuth::user()togettheauthenticateduserinstance.2.Useauth()->id()orAuth::id()toretrieveonlytheuserID.3.Checkloginstatuswithauth()->check()beforeaccessinguserdata.4.InBlade,use@authorauth()->check()toconditionallydisplayco

Aug 01, 2025 am 01:52 AM

How to work with lazy collections in Laravel?

UselazycollectionsinLaravelwhenprocessinglargedatasetssuchasEloquentqueries,bigarrays,orfilestoavoidmemoryexhaustion.2.CreatealazycollectionfromEloquentusinglazy()orcursor(),withlazy()preferredforbettermethodsupport.3.Generatelazycollectionsfromlarge

Aug 01, 2025 am 01:13 AM

laravel

How to work with request headers and responses in Laravel?

LaravelallowseasyaccesstorequestheadersviatheRequestobjectorrequest()helper,suchas$request->header('Content-Type')orrequest()->header('X-Forwarded-For').Youcancheckforheaderexistenceusing$request->hasHeader('X-API-Key')andretrieveallheadersw

Aug 01, 2025 am 12:19 AM

laravel http request

Laravel error and exception handling

Laravel's error and exception handling mechanism is based on the PHP exception system and Symfony component, and is managed by the App\Exceptions\Handler class. 1. Record exceptions through the report() method, such as integrating Sentry and other monitoring services; 2. Convert exceptions into HTTP responses through the render() method, supporting custom JSON or page jumps; 3. You can create custom exception classes such as PaymentFailedException and define their response format; 4. Automatically handle verification exception ValidationException, and manually adjust the error response structure; 5. Decide whether to display details based on the APP_DEBUG configuration.

Jul 31, 2025 am 11:57 AM

java programming

How to extend a Laravel class using the macro method?

You can use macro methods to extend classes that use Macroable features in Laravel. 1. Ensure that the target class (such as Request, Collection) uses Macroable features; 2. Register macros in the boot method of the service provider (such as AppServiceProvider) through ClassName::macro('methodName',closure); 3. Call custom methods through instances in the application, such as $request->isApiRequest() or $collection->averageStringLength(); 4. Note that macros are global

Jul 31, 2025 am 11:45 AM

What are queues in Laravel?

Laravelqueuesdefertime-consumingtaskslikesendingemailsorprocessinguploadstoimproveperformanceanduserexperience.1.Whenajobisdispatched,itisstoredinaqueueusingdriverssuchasdatabase,Redis,SQS,orothers.2.Aqueueworker,startedwithphpartisanqueue:work,proce

Jul 31, 2025 am 10:57 AM

How to handle CORS issues in Laravel?

For the CORS problem of LaravelAPI, it is recommended to choose the correct solution according to the version: 1. LaravelSanctum should be used for Laravel9.2 and above, after installation, configure the SANCTUM_STATEFUL_DOMAINS environment variable and apply the EnsureFrontendRequestsAreStateful middleware; 2. Older versions need to use fruitcake/laravel-cors package, and set allowed_origins and other parameters by config/cors.php; 3. Avoid manually adding CORS headers to ensure that the preflight request is processed correctly and the credentials farm

Jul 31, 2025 am 10:56 AM

What are routes in Laravel?

In Laravel, a route is the entry point for the application that defines how HTTP requests are processed and point to specific code. The routing file is located in the routes/ directory, mainly including: routes/web.php for web page requests (including sessions and CSRF protection), routes/api.php for API interface (stateless, using API middleware), routes/console.php for Artisan command, routes/channels.php for broadcast events. The basic routing syntax is defined by closures, such as Route::get('/hello',function(){return'Hell

Jul 31, 2025 am 10:16 AM

How to version a Laravel API?

UseURLversioning(e.g.,/api/v1)forsimplicityandclarity.2.GroupversionedroutesusingRoute::prefix()inroutes/api.php.3.Organizecontrollers,resources,andtransformersbyversioninseparatedirectories(e.g.,App\Http\Controllers\Api\V1).4.UseLaravelAPIResourcest

Jul 31, 2025 am 10:09 AM

How to create named routes in Laravel?

In Laravel, use the name() method to name the route and reference it through the route() helper function, 1. Define the named route: Route::get('/dashboard',function(){})->name('dashboard'); 2. Use: {{route('dashboard')}} in the Blade template; 3. Redirect in the controller: returnredirect()->route('dashboard'); 4. You can add a name prefix when routing grouping: Route::name('admin.')->group() to make the route

Jul 31, 2025 am 10:05 AM

laravel routing