Table of Contents
What is laravel facade
Home PHP Framework Laravel what is laravel facade

what is laravel facade

Mar 15, 2022 am 11:32 AM
laravel

In laravel, the facade is a "static" interface provided for the binding class in the application service container. It can provide easier to test, more flexible, concise and elegant syntax during maintenance. All facades are defined in the "Illuminate\Support\Facades" namespace.

what is laravel facade

#The operating environment of this article: Windows 10 system, Laravel version 6, Dell G3 computer.

What is laravel facade

Facades provides a "static" interface for binding classes in the application service container.

Laravel has many built-in Facades, which can access most of Laravel's functions.

Laravel's facade serves as a "static proxy" for the underlying class in the service container. Compared with traditional static methods, it can provide easier to test, more flexible, concise and elegant syntax during maintenance.

All Laravel facades are defined under the Illuminate\Support\Facades namespace.

We can easily access the facade:

use Illuminate\Support\Facades\Cache;
Route::get('/cache', function () {
    return Cache::get('key');
});
Copy after login

Throughout the Laravel documentation, many examples use the facade to demonstrate the various functional features of the framework.

When to use Facades

Facades have many advantages. They provide a simple and easy-to-remember syntax, allowing us to use them without having to remember long class names. The functional features provided by Laravel, in addition, make them easy to test due to their unique use of PHP dynamic methods.

When using Facades, there are some places that require special attention.

The main risk of using Facades is that it will cause the scope of the class to expand.

Because Facades are very simple to use and do not require injection, we will inadvertently use many Facades in a single class, causing the class to become larger and larger.

When using dependency injection, the more classes used, the longer the constructor will be, which will attract visual attention and remind you that this class is a bit huge. Therefore, when using Facades, pay special attention to controlling the size of the class to keep the scope of the class short.

When developing third-party extension packages that interact with Laravel, it is recommended to inject the Laravel contract instead of using Facades to use classes. Because extensions are built outside of Laravel itself, you cannot use Laravel Facades to test helper functions.

Facades Vs. Dependency Injection

One of the main advantages of dependency injection is the ability to switch the implementation of the injected class. This is useful when testing because you can inject a mock or stub and assert various methods called on the stub.

Usually, truly static methods cannot be mocked or stubbed. However, because Facades use dynamic methods to proxy method calls on objects resolved from the service container, we can test Facades just like we test injected class instances. For example, like the following route:

use Illuminate\Support\Facades\Cache;
 
Route::get('/cache', function () {
    return Cache::get('key');
})
Copy after login

We can write a test like this to verify that the Cache::get method is called in the way we expect:

use Illuminate\Support\Facades\Cache;
/**
 * 一个基础功能的测试用例。
 *
 * @return void
 */
public function testBasicExample()
{
Cache::shouldReceive('get')
->with('key')
->andReturn('value');
$this->visit('/cache')
->see('value');
}
Copy after login

[Related recommendations: laravel video Tutorial

The above is the detailed content of what is laravel facade. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to get the return code when email sending fails in Laravel? How to get the return code when email sending fails in Laravel? Apr 01, 2025 pm 02:45 PM

Method for obtaining the return code when Laravel email sending fails. When using Laravel to develop applications, you often encounter situations where you need to send verification codes. And in reality...

Laravel schedule task is not executed: What should I do if the task is not running after schedule: run command? Laravel schedule task is not executed: What should I do if the task is not running after schedule: run command? Mar 31, 2025 pm 11:24 PM

Laravel schedule task run unresponsive troubleshooting When using Laravel's schedule task scheduling, many developers will encounter this problem: schedule:run...

In Laravel, how to deal with the situation where verification codes are failed to be sent by email? In Laravel, how to deal with the situation where verification codes are failed to be sent by email? Mar 31, 2025 pm 11:48 PM

The method of handling Laravel's email failure to send verification code is to use Laravel...

How to implement the custom table function of clicking to add data in dcat admin? How to implement the custom table function of clicking to add data in dcat admin? Apr 01, 2025 am 07:09 AM

How to implement the table function of custom click to add data in dcatadmin (laravel-admin) When using dcat...

Laravel - Dump Server Laravel - Dump Server Aug 27, 2024 am 10:51 AM

Laravel - Dump Server - Laravel dump server comes with the version of Laravel 5.7. The previous versions do not include any dump server. Dump server will be a development dependency in laravel/laravel composer file.

Laravel Redis connection sharing: Why does the select method affect other connections? Laravel Redis connection sharing: Why does the select method affect other connections? Apr 01, 2025 am 07:45 AM

The impact of sharing of Redis connections in Laravel framework and select methods When using Laravel framework and Redis, developers may encounter a problem: through configuration...

Laravel multi-tenant extension stancl/tenancy: How to customize the host address of a tenant database connection? Laravel multi-tenant extension stancl/tenancy: How to customize the host address of a tenant database connection? Apr 01, 2025 am 09:09 AM

Custom tenant database connection in Laravel multi-tenant extension package stancl/tenancy When building multi-tenant applications using Laravel multi-tenant extension package stancl/tenancy,...

Laravel - Action URL Laravel - Action URL Aug 27, 2024 am 10:51 AM

Laravel - Action URL - Laravel 5.7 introduces a new feature called “callable action URL”. This feature is similar to the one in Laravel 5.6 which accepts string in action method. The main purpose of the new syntax introduced Laravel 5.7 is to directl

See all articles