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Technical Articles

PHP Framework

How to build a blog with Laravel from scratch?

Install and create a Laravel project, use the composercreate-project command to initialize the blog project and start the development server; 2. Configure the database, set MySQL connection information in the .env file and create a blog database; 3. Create Post model and migration file, define title, content, slug, is_published and other fields and perform migration; 4. Generate the PostController resource controller, query published articles in the index method and display them on a page; 5. Use the Blade template engine to create layout and view files, including article list and details page; 6. Register in web.php

Aug 02, 2025 am 10:16 AM

Using Laravel's built-in `Arr` helper.

Laravel's Arr class provides several practical methods to simplify array operations. 1.Arr::get() can safely take values from arrays, supporting point syntax and default values (including closures); 2.Arr::add() is used to add key-value pairs, and does not overwrite if the key already exists; 3.Arr::where() and Arr::whereNotNull() can filter invalid data, the latter filters only null values; 4.Arr::only() and Arr::except() are used to extract or exclude specified fields; 5.Arr::flatten() can flatten multi-dimensional arrays and support limiting expansion levels. These methods improve code security, readability and development efficiency.

Aug 02, 2025 am 09:30 AM

laravel

How to schedule tasks with the Laravel scheduler?

Laravel's scheduler centrally manages timing tasks by defining tasks in Kernel.php and using a single cron to execute schedule:run every minute. 1. Define tasks in the schedule method of app/Console/Kernel.php, such as $schedule->command('inspire')->daily(); 2. Add system cron: *cd/path-to-project&&phpartisanschedule:run>>/dev/null2>&1; 3. Common uses

Aug 02, 2025 am 08:53 AM

laravel Task scheduling

How to use accessors and mutators in Eloquent in Laravel?

AccessorsandmutatorsinLaravel'sEloquentORMallowyoutoformatormanipulatemodelattributeswhenretrievingorsettingvalues.1.Useaccessorstocustomizeattributeretrieval,suchascapitalizingfirst_nameviagetFirstNameAttribute($value)returningucfirst($value).2.Usem

Aug 02, 2025 am 08:32 AM

laravel eloquent

How to work with sessions in Laravel?

Laravel simplifies session management, enabling data to be persisted across requests through its clear API. 1. Use session() helper function or Session facade to store data, such as session(['key'=>'value']) or session()->put('name','JohnDoe'); 2. Get data through get() method, supports default values, such as session('key','default'), and use has() or exists() to check whether the key exists; 3. Use flash() to store data that is valid only in the next request, such as prompt message, and can be reflash(

Aug 02, 2025 am 08:21 AM

How to build a multi-tenant application in Laravel?

Chooseamulti-tenantarchitecturebasedonisolationandscalabilityneeds;2.Identifytenantsviasubdomainordomainusingmiddlewaretoresolveandstorethecurrenttenant;3.Configuredynamicdatabaseconnectionsbysettingtenant-specificdatabaseconfigurationsatruntimeandas

Aug 02, 2025 am 08:20 AM

How to use the when method for conditional queries in Laravel?

Laravel's when method is used to add constraints to the query when the condition is met, avoiding redundant if statements. 1. The when method receives three parameters: a callback executed when the condition is true, and an optional callback executed when the condition is false. 2. The condition can be a boolean value or a closure that returns a boolean value. 3. The callback function receives the query builder instance and can receive the value of the condition as the second parameter. 4. Complex logical judgment can be achieved through closures as conditions. 5. Support chain calls to multiple when to handle multiple conditions. 6. Suitable for API controllers and search filtering scenarios, making the code clearer and more Laravel-style. Therefore, the when method is a recommended way to handle the conditional logic in Eloquent query, which can show

Aug 02, 2025 am 08:13 AM

How to implement a referral system in Laravel?

Create referrals table to record recommendation relationships, including referrals, referrals, recommendation codes and usage time; 2. Define belongsToMany and hasMany relationships in the User model to manage recommendation data; 3. Generate a unique recommendation code when registering (can be implemented through model events); 4. Capture the recommendation code by querying parameters during registration, establish a recommendation relationship after verification and prevent self-recommendation; 5. Trigger the reward mechanism when recommended users complete the specified behavior (subscription order); 6. Generate shareable recommendation links, and use Laravel signature URLs to enhance security; 7. Display recommendation statistics on the dashboard, such as the total number of recommendations and converted numbers; it is necessary to ensure database constraints, sessions or cookies are persisted,

Aug 02, 2025 am 06:55 AM

laravel Recommended system

How to set up authentication in Laravel?

InstallLaravelBreezeusingcomposerrequirelaravel/breeze--devandrunphpartisanbreeze:installtosetuplogin,registration,andpasswordreset.2.Configuredatabasecredentialsin.envandrunphpartisanmigratetocreatetables.3.Protectroutesusingtheauthmiddlewareinroute

Aug 02, 2025 am 02:28 AM

Understanding MVC: How Laravel Implements the Model-View-Controller Pattern

LaravelimplementstheMVCpatternbyusingModelsfordatamanagement,Controllersforbusinesslogic,andViewsforpresentation.1)ModelsinLaravelarepowerfulORMshandlingdataandrelationships.2)ControllersmanagetheflowbetweenModelsandViews.3)ViewsuseBladetemplatingfor

Aug 02, 2025 am 01:04 AM

laravel mvc

What is the behaviors method in a controller?

BehaviormethodsinacontrollerhandleincomingHTTPrequestsbymappingURLstospecificfunctionsthatprocessdataandreturnresponses.Thesemethods,suchasindex(),view($id),create(),store(),edit($id),update($id),anddelete($id),alignwithRESTfulconventionsandcorrespon

Aug 02, 2025 am 12:39 AM

How to set up Pusher with Laravel?

Install Pusher and Laravel broadcast components and configure BROADCAST_DRIVER=pusher and QUEUE_CONNECTION; 2. Create an application on the Pusher official website and obtain AppKeys, fill in the .env file corresponding to the PUSHER variable; 3. Enable BroadcastServiceProvider in config/app.php and define authorized channels in routes/channels.php; 4. Create an event class that implements the ShouldBroadcast interface, set the broadcast channel and data format, and trigger events in the controller; 5. Introduce PusherJS and Lar in the front-end

Aug 01, 2025 am 07:26 AM

How do I access request parameters in a controller?

Accessed through params hash in RubyonRails, using the strong parameter mechanism of require/permit; obtain input through the Request object in Laravel, and support direct verification; use req.query, req.params and req.body to process different types of parameters in Express.js; use @RequestParam, @PathVariable and @RequestBody annotations to extract data in SpringBoot. The specific methods are: 1. Rails uses params[:key] to obtain parameters and filter them with strongparams; 2.Lar

Aug 01, 2025 am 07:25 AM

controller Request parameters

How do I use filters in a controller?

When using filters in the controller, if you encounter logic shared by multiple operations (such as authentication, logging, etc.), filters should be used first to keep the code tidy and reusable. 1. Filters are logical blocks that run before and after the action is executed, used to handle tasks across multiple operations; 2. Application of filters is usually implemented by adding attributes to the controller or action method, such as [Authorize]; 3. Creating a custom filter requires implementing a specific interface, such as IActionFilter, and can be checked before the action is executed; 4. Global filters can be applied to all requests through registration, and are suitable for anti-counterfeiting protection, website-wide HTTPS mandatory and other scenarios. By using filters reasonably, you can effectively reduce duplicate code and improve the application's

Aug 01, 2025 am 07:25 AM

filters