Chapters

11 Chapters | 24:14 |

01

Introduction

6:27
02

Command Pattern with AutowireLocator

6:27
03

Simplify with AutoconfigureTag and AsTaggedItem

2:50
04

List Buttons with AutowireIterator

4:44
05

Container and Iterator with ServiceCollectionInterface

3:46
06

Alias an Interface with AsAlias

(coming soon)
07

Decorate a Service with AsDecorator

(coming soon)
08

Enforce Named Autowiring with Target

(coming soon)
09

Enable Services in Specific Environments with When

(coming soon)
10

Lazy Services

(coming soon)
11

More Laziness Attributes

(coming soon)

This course is still being released! Check back later for more chapters.

> Symfony 7 >

Course Overview

Dependency Injection #[Attributes]

In modern Symfony, services can be configured using native PHP attributes, integrating configuration directly within the code. Let’s explore this with a practical example.

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intermediate
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Kevin Bond

About this course

What PHP libraries does this tutorial use?

// composer.json
{
    "require": {
        "php": ">=8.2",
        "ext-ctype": "*",
        "ext-iconv": "*",
        "symfony/console": "7.1.*", // v7.1.3
        "symfony/dotenv": "7.1.*", // v7.1.3
        "symfony/flex": "^2", // v2.4.6
        "symfony/framework-bundle": "7.1.*", // v7.1.3
        "symfony/monolog-bundle": "^3.0", // v3.10.0
        "symfony/runtime": "7.1.*", // v7.1.1
        "symfony/string": "7.1.*", // v7.1.3
        "symfony/twig-bundle": "7.1.*", // v7.1.1
        "symfony/ux-icons": "^2.18", // v2.19.0
        "symfony/ux-twig-component": "^2.18", // v2.19.0
        "symfony/yaml": "7.1.*", // v7.1.1
        "twig/extra-bundle": "^2.12|^3.0", // v3.11.0
        "twig/string-extra": "^3.10", // v3.11.0
        "twig/twig": "^2.12|^3.0" // v3.11.0
    },
    "require-dev": {
        "symfony/debug-bundle": "7.1.*", // v7.1.1
        "symfony/stopwatch": "7.1.*", // v7.1.1
        "symfony/web-profiler-bundle": "7.1.*" // v7.1.3
    }
}

Traditionally, Symfony services were configured in XML or YAML files. This creates a bit of a disconnect between your code and the configuration. In modern Symfony, we can use native PHP attributes to configure services. This allows us to keep our service configuration right in our code as native PHP metadata, which is pretty cool! Let's dive into these Dependency Injection attributes in the context of a fun example.