Chapters

26 Chapters | 2:53:08 |

01

Events, Events & Events!

5:10
02

Hooking into Symfony with an Event Subscriber

5:54
03

index.php to HttpKernel::handle()

6:50
04

RequestEvent & RouterListener

6:26
05

Routing Secrets & Request Attributes

7:47
06

The Controller Resolver

7:03
07

Who Creates the Controller & Gives it the Container?

8:04
08

How does the Controller Access the Container?

4:14
09

The Argument Resolver

8:13
10

Argument Value Resolvers

5:32
11

How Service Autowiring Works in a Controller Method

7:36
12

Calling the Controller & View Event

5:20
13

kernel.response Event & Request Format

6:36
14

Finishing the Request

6:03
15

Exception Handling

9:29
16

The Critical kernel.exception Event Listeners

7:07
17

FlattenException & Error Status Codes

6:10
18

Serializer Error Renderer: JSON/XML Errors

5:40
19

How the HTML Error Page is Rendered

7:34
20

The Magic `_controller` Attribute

6:36
21

Custom Global Controller Arguments

5:37
22

How Entity Controller Arguments Work

4:54
23

Sub Requests

7:54
24

Sub Requests & Request Data

5:40
25

Manually Making a Sub Request

6:34
26

Sub Request Attributes

9:05

> Symfony 5 >

Course Overview

Symfony 5 Deep Dive! The HttpKernel Request-Response Flow

Dive deep into Symfony's core! Discover the all-powerful HttpKernel::handle() method used in Symfony and Drupal.

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3854 students
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EN Script
Certificate of Completion

Your Guides

Ryan Weaver

About this course

This tutorial also works well for Symfony 6!

What PHP libraries does this tutorial use?

// composer.json
{
    "require": {
        "php": ">=8.1",
        "ext-iconv": "*",
        "antishov/doctrine-extensions-bundle": "^1.4", // v1.4.3
        "aws/aws-sdk-php": "^3.87", // 3.133.20
        "composer/package-versions-deprecated": "^1.11", // 1.11.99
        "doctrine/annotations": "^1.0", // 1.12.1
        "doctrine/doctrine-bundle": "^2.0", // 2.2.3
        "doctrine/doctrine-migrations-bundle": "^1.3|^2.0", // 2.2.2
        "doctrine/orm": "^2.5.11", // 2.8.2
        "easycorp/easy-log-handler": "^1.0", // v1.0.9
        "http-interop/http-factory-guzzle": "^1.0", // 1.0.0
        "knplabs/knp-markdown-bundle": "^1.7", // 1.9.0
        "knplabs/knp-paginator-bundle": "^5.0", // v5.4.2
        "knplabs/knp-snappy-bundle": "^1.6", // v1.7.1
        "knplabs/knp-time-bundle": "^1.8", // v1.16.0
        "league/flysystem-aws-s3-v3": "^1.0", // 1.0.24
        "league/flysystem-cached-adapter": "^1.0", // 1.0.9
        "league/html-to-markdown": "^4.8", // 4.9.1
        "liip/imagine-bundle": "^2.1", // 2.5.0
        "oneup/flysystem-bundle": "^3.0", // 3.7.0
        "php-http/guzzle6-adapter": "^2.0", // v2.0.2
        "phpdocumentor/reflection-docblock": "^5.2", // 5.2.2
        "sensio/framework-extra-bundle": "^5.1", // v5.6.1
        "symfony/asset": "5.0.*", // v5.0.11
        "symfony/console": "5.0.*", // v5.0.11
        "symfony/dotenv": "5.0.*", // v5.0.11
        "symfony/flex": "^1.9", // v1.21.6
        "symfony/form": "5.0.*", // v5.0.11
        "symfony/framework-bundle": "5.0.*", // v5.0.11
        "symfony/mailer": "5.0.*", // v5.0.11
        "symfony/messenger": "5.0.*", // v5.0.11
        "symfony/monolog-bundle": "^3.5", // v3.6.0
        "symfony/property-access": "5.0.*|| 5.1.*", // v5.1.11
        "symfony/property-info": "5.0.*|| 5.1.*", // v5.1.10
        "symfony/routing": "5.1.*", // v5.1.11
        "symfony/security-bundle": "5.0.*", // v5.0.11
        "symfony/sendgrid-mailer": "5.0.*", // v5.0.11
        "symfony/serializer": "5.0.*|| 5.1.*", // v5.1.10
        "symfony/twig-bundle": "5.0.*", // v5.0.11
        "symfony/validator": "5.0.*", // v5.0.11
        "symfony/webpack-encore-bundle": "^1.4", // v1.11.1
        "symfony/yaml": "5.0.*", // v5.0.11
        "twig/cssinliner-extra": "^2.12", // v2.14.3
        "twig/extensions": "^1.5", // v1.5.4
        "twig/extra-bundle": "^2.12|^3.0", // v3.3.0
        "twig/inky-extra": "^2.12", // v2.14.3
        "twig/twig": "^2.12|^3.0" // v2.14.4
    },
    "require-dev": {
        "doctrine/doctrine-fixtures-bundle": "^3.0", // 3.4.0
        "fakerphp/faker": "^1.13", // v1.13.0
        "symfony/browser-kit": "5.0.*", // v5.0.11
        "symfony/debug-bundle": "5.0.*", // v5.0.11
        "symfony/maker-bundle": "^1.0", // v1.29.1
        "symfony/phpunit-bridge": "5.0.*", // v5.0.11
        "symfony/stopwatch": "^5.1", // v5.1.11
        "symfony/var-dumper": "5.0.*", // v5.0.11
        "symfony/web-profiler-bundle": "^5.0" // v5.0.11
    }
}

Want to see how Symfony really works under-the-hood? Let's do it!

In this tutorial, we'll dive deep: tracing from the first line of code that's executed in public/index.php through the core of Symfony's HttpKernel. It's a daring adventure that includes events, controller resolvers, request attributes, and giant sea monsters... probably:

Hooking into Symfony with an event subscriber
Finding where the Request is created
The all-powerful HttpKernel::handle() method that's used in Symfony AND Drupal!
See where the core events like RequestEvent, ControllerEvent and more are dispatched
Controller resolver, argument resolver, argument value resolvers oh my!
Request attributes: the secret carrier of framework info
What is a sub-request?
Manually creating and handling sub-requests

By the end of this tutorial, you'll understand how the dots connect deep under the surface of Symfony... making you capable of hooking into just about any part of Symfony. Woh.

4 Comments

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Ouchayan H. 4 years ago

Could You tell me when you will publish the course.

| Reply |

Victor SFCASTS Ouchayan H. 4 years ago

Hey Hamid,

We're working actively on this one right now, so it should be available pretty soon. I think the idea to release it in the end of March or early April, depend on our availability, because we're going to release a few more courses very soon. Please, feel free to subscribe to the and we will let you know when the first chapter is released, and later the 2nd email to let you know when it's completely released.

Cheers!

| Reply |

Ouchayan H. Victor 4 years ago

Thank you for your reply. i'm waiting.

| Reply |

Shiraats 4 years ago

Nice. Cant wait.

| Reply |