How to use Laravel Precognition for live validation?
The steps for real-time verification of form in LaravelPrecognition are as follows: 1. Add the X-Precognition:true header to the front-end request to trigger pre-verification; 2. The back-end uses the standard validate() or FormRequest for verification, Laravel will automatically intercept and return a 200 (valid) or 422 (error) response without executing subsequent logic; 3. When uploading files, you must correctly set the multipart/form-data and X-Precognition headers; 4. Support FormRequest class for complex rules definition; 5. The front-end recommends disabling the anti-shake, inline prompts and submit buttons to optimize the experience; pay attention to
Aug 02, 2025 pm 03:42 PM
How to handle errors and exceptions in Laravel?
LaravelhandleserrorsthroughtheApp\Exceptions\Handlerclass,wherethereport()methodlogsexceptionsandrender()convertsthemtoHTTPresponses.2.CustomizeerrorpagesbycreatingBladeviewsinresources/views/errors/forHTTPstatuscodeslike404,403,and500.3.Validationex
Aug 02, 2025 pm 03:30 PM
What are facades in Laravel?
Laravelfacadesprovideastatic-likeinterfacetoservicesinthecontainer,enablingsimpleaccesstocomplexsystems.1.Facadesworkviathe__callStatic()magicmethod,dynamicallyresolvingservicesfromthecontainer—e.g.,Cache::get('key')resolvestotheactualcacheinstance.2
Aug 02, 2025 pm 03:20 PM
Yii vs Symfony: choose your weapon
The choice of Yii or Symfony depends on project needs and personal preferences. Yii is more suitable for small and fast projects; Symfony is more suitable for large and complex projects. Yii is fast and has a low learning curve, which is suitable for rapid development; Symfony is rich in features and strong modularity, which is suitable for projects that require expansion and customization.
Aug 02, 2025 pm 03:14 PM
How to use service containers and dependency injection in Laravel?
Laravel's dependency injection is decoupled from the service container through automatic resolution of type prompt dependencies. 1. Use constructor injection to externalize the dependencies; 2. Use bind binding interface to the specific implementation in the service provider; 3. Use singleton to ensure singleton; 4. Inject scalar values through needs()->give(); 5. Use when()->needs()->give() to implement context binding; 6. Direct type prompt dependencies in controllers, middleware, tasks, etc.; 7. Use app() or resolve() to manually parse instances to finally realize a flexible and testable application architecture.
Aug 02, 2025 pm 01:43 PM
How to use Laravel Pint for code styling?
LaravelPintisazero-configurationcodestylefixerthatautomaticallyenforcesconsistentPHPcodingstandards,especiallyinLaravelapplications.2.Itcomespre-installedwithLaravel9 andcanbeinstalledinolderversionsornon-Laravelprojectsusingcomposerrequire--devlarav
Aug 02, 2025 pm 01:35 PM
How to create a RESTful API with Laravel?
Create a Laravel project and configure the database environment; 2. Use Artisan to generate models, migrations and controllers; 3. Define API resource routing in api.php; 4. Implement the addition, deletion, modification and query methods in the controller and use request verification; 5. Install LaravelSanctum to implement API authentication and protect routes; 6. Unify JSON response format and handle errors; 7. Use Postman and other tools to test the API, and finally obtain a complete and extensible RESTfulAPI.
Aug 02, 2025 pm 12:31 PM
How to implement a comment system for a blog in Laravel?
Create Comment model and migration and run migration; 2. Define corresponding relationships in Post, User and Comment models; 3. Add a comment form on the article details page; 4. Create CommentController and process comment submissions in the store method; 5. Register a comment submission route with authenticated middleware in the route; 6. Display all comments of the article on the page; 7. Optional enhancements include nested reply, Markdown support, anti-spam, auditing and real-time updates; 8. Pay attention to input filtering, CSRF protection and permission control to ensure system security. This comment system is implemented based on Laravel convention, supports authenticated users to post comments and is scalable.
Aug 02, 2025 am 11:42 AM
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
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 $schedule->command('inspire')->daily(); 2. Add system cron: *cd/path-to-project&&phpartisanschedule:run>>/dev/null2>&1; 3. Common uses
Aug 02, 2025 am 08:53 AM
How to use accessors and mutators in Eloquent in Laravel?
AccessorsandmutatorsinLaravel'sEloquentORMallowyoutoformatormanipulatemodelattributeswhenretrievingorsettingvalues.1.Useaccessorstocustomizeattributeretrieval,suchascapitalizingfirst_nameviagetFirstNameAttribute($value)returningucfirst($value).2.Usem
Aug 02, 2025 am 08:32 AM
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
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