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Technical Articles

PHP Framework

How do I configure the database connection in Yii?

ToconfigureadatabaseconnectioninYii2,definetheDSN,username,password,andoptionalsettingsinconfig/db.phpordirectlyundercomponentsinconfig/web.php.1.Setupthebasicconfigurationwith'class','dsn','username','password',and'charset'.2.EnsuretheDSNmatchesyour

Jul 28, 2025 am 01:50 AM

yii Database Connectivity

How to use Algolia with Laravel Scout?

Install LaravelScout and Algolia clients; 2. Configure Algolia credentials in .env files; 3. Add Searchable features to the model and define the toSearchableArray method; 4. Use the scout:import command to import existing data; 5. Perform searches through Post::search() and support paging; 6. Configure queues to ensure automatic data synchronization; 7. Optionally use AlgoliaSDK to implement advanced functions such as filtering and facetization; 8. Custom index names through searchableAs method; 9. Call delete or unsearchable methods to delete from Algolia

Jul 28, 2025 am 01:11 AM

How to use Data Transfer Objects (DTOs) in Laravel?

DTOsinLaravelareusedtoorganize,validate,andtransferdatabetweenapplicationlayers,improvingpredictabilityandtestability.2.Installtherecommendedspatie/laravel-datapackageviaComposerforrobustDTOfunctionality.3.CreateaDTOusingtheArtisancommandmake:data,de

Jul 28, 2025 am 01:03 AM

Mastering MVC: A Guide to Building Scalable and Maintainable Applications

MVChelpsbuildscalableandmaintainableapplicationsbyseparatingconcernsintothreecomponents:1)Modelmanagesdataandbusinesslogic,2)Viewhandlespresentation,and3)Controlleractsasanintermediary,ensuringcleaner,moremodularcode.

Jul 28, 2025 am 12:37 AM

application development mvc architecture

What is eager loading in Laravel?

EagerloadingpreventstheN 1queryproblembyloadingrelationshipsupfront.TheN 1problemoccurswhen1queryfetchesrecords(e.g.,100posts)andNadditionalqueriesfetchrelateddata(e.g.,authorforeachpost),resultingin101queries.Eagerloadingfixesthis:1queryretrievesall

Jul 27, 2025 am 04:14 AM

laravel

How to display validation errors in Laravel?

Laravelautomaticallyprovidesthe$errorsvariableinBladetemplatestodisplayvalidationerrors.2.Use$errors->first('field')toshowthefirsterrorforaspecificfield,andold('field')torepopulateinputvalues.3.Displayallerrorsatthetopoftheformusing$errors->any

Jul 27, 2025 am 04:13 AM

laravel Verification error

How to use API resources in Laravel?

Using API resources is the recommended way to return structured JSON responses when building RESTful APIs in Laravel. 1. Use phpartisanmake:resourcePostResource to create resource class; 2. Define return fields in the toArray method, such as id, title, created_at, etc.; 3. Return newPostResource($post) or PostResource::collection($posts); 4. Handle embed through newUserResource($this->whenLoaded('user'))

Jul 27, 2025 am 04:09 AM

How to implement full-text search with Laravel Scout and Meilisearch?

Install LaravelScout and publish configuration files; 2. Install and run Meilisearch through Docker or binary files; 3. Configure Meilisearch driver and host addresses in .env; 4. Add Searchabletrait to the model and define the toSearchableArray method; 5. Use the scout:import command to import existing data and enable automatic queue synchronization; 6. Use Post::search() for search, support paging and limiting the number of results; 7. Use where method to filter searches and set index attributes through the API; 8. Ensure that the queue worker runs to maintain the index real

Jul 27, 2025 am 04:09 AM

What is a service provider in Laravel?

AserviceproviderinLaravelisessentialforregisteringandconfiguringserviceswithintheapplicationlifecycle;1.Usetheregister()methodtobindservicesintothecontainerwithoutbootingsideeffects;2.Usetheboot()methodtoconfigureservices,registereventlisteners,route

Jul 27, 2025 am 04:08 AM

What is Configuration Caching in Laravel?

Laravel's configuration cache improves performance by merging all configuration files into a single cache file. Enabling configuration cache in a production environment can reduce I/O operations and file parsing on each request, thereby speeding up configuration loading; 1. It should be enabled when the application is deployed, the configuration is stable and no frequent changes are required; 2. After enabling, modify the configuration, you need to re-run phpartisanconfig:cache to take effect; 3. Avoid using dynamic logic or closures that depend on runtime conditions in the configuration file; 4. When troubleshooting problems, you should first clear the cache, check the .env variables and re-cache.

Jul 27, 2025 am 03:54 AM

laravel 配置緩存

How to set up a database connection in Laravel?

TosetupadatabaseconnectioninLaravel,updatethe.envfilewithcorrectcredentials,configuresettingsinconfig/database.php,testtheconnectionusingArtisanorcustomcode,andresolvecommonissueslikepermissionsorcaching.1.Updatethe.envfilewithDB_CONNECTION,DB_HOST,D

Jul 27, 2025 am 03:52 AM

How to use a Content Delivery Network (CDN) with Laravel Vite?

Setbase:process.env.CDN_URL||'/'invite.config.jstoprefixassetURLswiththeCDNdomain;2.Runnpmrunbuildtogenerateversionedassets;3.Syncthepublic/builddirectorytoyourCDNusingtoolslikeAWSCLIorautomateviaCI/CD;4.Use@viteinBladetemplatestoautomaticallygenerat

Jul 27, 2025 am 03:49 AM

laravel cdn

How to generate PDFs in Laravel?

To generate PDF, use barryvdh/laravel-dompdf; 1. Install composerrequirebarryvdh/laravel-dompdf; 2. Optional publish configuration phpartisanvendor:publish--provider="Barryvdh\DomPDF\ServiceProvider"; 3. Create a Blade template such as invoice.blade.php; 4. Use Pdf::loadView('pdf.invoice',compact('invoice')) to generate in the controller

Jul 27, 2025 am 03:39 AM

What is the repository pattern in Laravel?

The use of warehousing mode is to separate data access logic from business logic. 1. Define the warehousing interface and clarify the data operation method; 2. Create specific implementation classes based on Eloquent encapsulate database queries; 3. Use warehousing interfaces through dependency injection in the controller; 4. Bind interfaces and implementation classes in the service provider; ultimately implement code decoupling, improve testability and maintainability, and is suitable for scenarios where medium and large applications or require flexibly switching data sources.

Jul 27, 2025 am 03:38 AM

laravel