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Technical Articles

PHP Framework

Laravel

Understanding the Laravel Service Container and Binding?

Service containers are the core tool for Laravel to manage dependencies and perform dependency injection. They reduce coupling by automatically parsing dependencies and improve code testability and flexibility. 1. It is like a "factory", which automatically creates objects and manages its life cycle; 2. Binding is used to tell the container how to create class instances. Common methods include bind() (new every time), singleton() (singleton) and instance() (existing instances); 3. Common usage scenarios include interface and implementation binding, singleton binding shared resources, and conditional binding switching implementation; 4. It is not recommended to over-binding to keep the code concise and clear. Mastering service containers helps write more flexible and maintainable Laravel applications.

Jul 23, 2025 am 02:11 AM

What is Laravel Breeze vs Jetstream?

The difference between LaravelBreeze and Jetstream is positioning and functionality. Breeze is a lightweight authentication package that provides login, registration, email verification and password reset functions. It is suitable for basic authentication needs. It uses Blade or Sanctum API, and has a simple and easy to customize structure. Jetstream is a more complete user dashboard solution, suitable for medium and large applications, supports multi-factor authentication, personal data management, team management, APIToken management, and integrates Inertia.js, Vue/React, suitable for SaaS product development. Selection suggestions: Choose Breeze for a simple project, and choose Jetstream if you need team collaboration and complete functions.

Jul 23, 2025 am 02:06 AM

How to install Laravel with Composer?

The easiest way to install Laravel is through Composer. First, make sure that PHP8.1 or higher, Composer and required extensions are installed; second, use the command composercreate-projectlaravel/laravelyour-project-name to install the project; optionally specify the version or use domestic mirror acceleration; then copy .env.example to .env and run phpartisankey:generate to generate the key; if the database is needed, configure the DB parameters in .env; finally use phpartisanserve to start the server and access it in the browser to test whether it is successful.

Jul 23, 2025 am 02:05 AM

How to generate a URL for a named route in Laravel?

The URL to generate named routes in Laravel can be implemented through the route() function. 1. Use route('route.name',$parameters) format to pass in the route name and parameters; 2. The parameters can be a single value, an associative array or omit optional parameters; 3. You can use {{route()}} to generate links in the Blade template; 4. Make sure that the route name is correct and the parameter passing is clear to avoid errors.

Jul 23, 2025 am 02:05 AM

laravel url generation

How to apply middleware to a single route in Laravel?

In Laravel, middleware can be directly applied through routing definition, middleware is used in controller constructors, or custom middleware can be created to achieve control over a single route. The specific methods are as follows: 1. Use the middleware() method in the routing definition to directly bind middleware, such as Route::get('/profile',[ProfileController::class,'show'])->middleware('auth'); 2. Use $this->middleware() to specify that it only applies to certain methods, combined with only() or except() to limit it; 3

Jul 23, 2025 am 02:00 AM

Implement Authorization with Laravel Gates and Policies.

Laravel's authorization mechanism is implemented through Gates and Policies. Gates is suitable for common permission judgments. If you check whether you are an administrator, you define and use closure logic in AuthServiceProvider; it can be used in the controller or Blade template through Gate::denies or @can. Policies are model-oriented. If you control whether the user can edit an article, you need to create a Policy class and register a binding model, and then call it with $this->authorize in the controller. Select Gate for global permissions, and Policies for model-related operations. The two can coexist without affecting each other, improving code clarity and maintenance.

Jul 23, 2025 am 01:58 AM

The Role of Service Providers in Laravel.

Service providers are mainly used in Laravel to bind classes to containers and trigger startup logic. Its core responsibilities are divided into two parts: the registration stage is used to bind the class to the service container, which is suitable for simple dependency binding; the boot stage is executed after all service providers have completed registration, which is suitable for operations that need to rely on other services, such as registration middleware, event listening, etc. Create custom service providers can be generated through the Artisan command and registered in the configuration. Common uses include binding interface implementation, loading configuration files, registering middleware and initializing third-party packages. When using it, you should pay attention to avoid calling uninitialized services in the register, make rational use of the automatic discovery mechanism, and maintain the responsibilities of multiple service providers.

Jul 23, 2025 am 01:54 AM

laravel service provider

Creating Custom Artisan Commands in Laravel.

To create a custom Artisan command in Laravel, you can follow the following steps: 1. Use phpartisanmake:commandYourCommandName to generate a command class. The system will automatically register and write logic in the handle() method; 2. Define the command name and parameters by setting $signature, such as cache:clear-old{days=30}, and add description through $description; 3. Check the $commands array in Kernel.php to ensure that the command is registered, use phpartisanlist to verify and test the command. Pay attention to parameter configuration and manual registration throughout the process

Jul 23, 2025 am 01:47 AM

laravel

Using Laravel Dusk for Browser Automation Testing?

LaravelDuskisidealforbrowserautomationtestinginLaravelapps.1.InstallviaComposerwithcomposerrequire--devlaravel/dusk.2.Setupusingphpartisandusk:installtogeneratetestfiles.3.Writetestssimulatinguseractionslikelogin,visit,type,andassertPathIs.4.Usepageo

Jul 23, 2025 am 12:56 AM

Preventing XSS attacks in Laravel.

To prevent XSS attacks, you must always use double braces to output content, verify and filter user input, and use CSP to enhance protection. Use {{}} to automatically escape variables in Blade templates to avoid using {!!!!!!} unless the content is trustworthy; the backend needs to verify the user input format and clean up HTML tags, and you can use strip_tags or third-party libraries; finally configure the CSP policy through HTTP headers to limit the script source and prevent inline script execution, thus forming a multi-layer defense system.

Jul 23, 2025 am 12:49 AM

laravel xss attack

How to protect API routes with Laravel Sanctum?

LaravelSanctum is used for API authentication. Its usage steps include: 1. Install and configure: Install, publish and execute Sanctum migration files through composer; 2. User login to generate token: Use the createToken method to generate plainTextToken and return it to the front-end; 3. Protect API routing: Restrict access permissions through the auth:sanctum middleware, or use auth.optional:sanctum to implement optional authentication; 4. Log out token: Delete all tokens of the specified token or user to achieve logout function; at the same time, you need to pay attention to details such as cross-domain configuration and token management.

Jul 23, 2025 am 12:16 AM

Using Eloquent API Resources in Laravel.

EloquentAPIResources is a tool in Laravel for building structured JSON responses. 1. It serves as a conversion layer between the model and the output data; 2. It can control the return field, add additional fields, and unified format; 3. Create a Resource class through Artisan and define a toArray method; 4. Use newResource() or Resource::collection() to return data in the controller; 5. Usage techniques include avoiding deep nesting, preloading relationships, conditional return fields, custom paging and naming specifications. Rational use can improve the clarity and performance of the API.

Jul 23, 2025 am 12:14 AM

How to implement user authentication in Laravel?

Use Laravel to make user authentication simple and secure. 1. Install LaravelBreeze through Composer and run the installation commands, then run the npm command and database migration to get out of the box login, registration, email verification and password reset functions. 2. If you need more control, you can customize the authentication logic in config/auth.php, such as modifying the user redirection path or replacing the default User model, but you need to pay attention to security issues. 3. Use auth middleware to protect the route, ensure that only logged-in users can access sensitive areas, and verify the user status through Auth::check() or auth()->user(), be sure to thoroughly test access control. The entire stream

Jul 22, 2025 am 03:19 AM

How to write a unit test in Laravel?

The key to writing Laravel unit tests is to understand its mechanism and structure. 1. Create test classes and can be generated using the Artisan command; 2. Write test methods starting with test_ and use assertion verification logic; 3. Introduce RefreshDatabasetrait when it comes to databases to automatically manage data state; 4. Run tests can be run through the phpunit or phpartisantest command and support the execution of specified classes or methods.

Jul 22, 2025 am 03:12 AM