Chapters

18 Chapters | 1:54:58 |

01

SOLID: The Good, The Bad & The Real World

3:22
02

Single-Responsibility Principle: What is it?

7:38
03

SRP: Responsibilities

6:24
04

Refactoring for SRP

7:23
05

SRP: Takeaways

4:12
06

Open–Closed Principle

7:24
07

OCP: Autoconfiguration & tagged_iterator

4:36
08

OCP: Takeaways

5:48
09

Liskov Substitution Principle

4:19
10

Liskov: Unexpected Exceptions

6:43
11

Liskov: Substituting a Class

7:24
12

Liskov: What Changes *Are* Allowed?

7:12
13

Liskov Takeaways & Service Alias

4:54
14

Interface Segregation Principle

6:29
15

ISP: Refactoring & Takeaways

9:24
16

Dependency Inversion Principle

5:31
17

Refactoring Towards Dependency Inversion

6:53
18

DIP: Takeaways

9:22

> OOP > Write SOLID Code & Impress your Friends

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03.

SRP: Responsibilities

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Sargath 5 years ago

I think there is also one important aspect here. A delegation. Because a user-manager delegates a persistence thus it doesn't do it itself. So I wouldn't say that it is also responsible for a persistence in such case. It only delegates that job to the entity manager and has a dependency of the EM itself. It also delegates sending responsibility to a mailer.

Cheers

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MolloKhan SFCASTS Sargath 5 years ago edited

Hey Sargath

That's a good point and we talk more about that in an upcoming episode. I agree with you, when you delegate work to another service (which usually implements an interface) your class or method it's protected from *almost* all kind of related changes, I say almost because if the signature of the method you're calling changes, then, your code will have to change too.
I like to see delegation as if you were orchestrating how objects communicate with each other

Cheers!

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Symfony 5.2

What PHP libraries does this tutorial use?

// composer.json
{
    "require": {
        "php": ">=8.2",
        "ext-ctype": "*",
        "ext-iconv": "*",
        "composer/package-versions-deprecated": "^1.11", // 1.11.99.1
        "doctrine/annotations": "^1.0", // 1.12.1
        "doctrine/doctrine-bundle": "^2", // 2.3.1
        "doctrine/doctrine-migrations-bundle": "^3", // 3.1.1
        "doctrine/orm": "^2", // 2.8.4
        "knplabs/knp-time-bundle": "^1.15", // v1.16.0
        "phpdocumentor/reflection-docblock": "^5.2", // 5.2.2
        "sensio/framework-extra-bundle": "^6.0", // v6.1.2
        "symfony/console": "5.2.*", // v5.2.6
        "symfony/dotenv": "5.2.*", // v5.2.4
        "symfony/flex": "^1.9", // v1.21.6
        "symfony/form": "5.2.*", // v5.2.6
        "symfony/framework-bundle": "5.2.*", // v5.2.6
        "symfony/http-client": "5.2.*", // v5.2.6
        "symfony/mailer": "5.2.*", // v5.2.6
        "symfony/property-access": "5.2.*", // v5.2.4
        "symfony/property-info": "5.2.*", // v5.2.4
        "symfony/security-bundle": "5.2.*", // v5.2.6
        "symfony/serializer": "5.2.*", // v5.2.4
        "symfony/twig-bundle": "5.2.*", // v5.2.4
        "symfony/validator": "5.2.*", // v5.2.6
        "symfony/webpack-encore-bundle": "^1.6", // v1.11.1
        "symfony/yaml": "5.2.*", // v5.2.5
        "twig/cssinliner-extra": "^3.3", // v3.3.0
        "twig/extra-bundle": "^2.12|^3.0", // v3.3.0
        "twig/twig": "^2.12|^3.0" // v3.3.0
    },
    "require-dev": {
        "doctrine/doctrine-fixtures-bundle": "^3.2", // 3.4.0
        "fakerphp/faker": "^1.13", // v1.14.1
        "symfony/debug-bundle": "^5.2", // v5.2.4
        "symfony/maker-bundle": "^1.13", // v1.30.2
        "symfony/monolog-bundle": "^3.0", // v3.7.0
        "symfony/stopwatch": "^5.2", // v5.2.4
        "symfony/var-dumper": "^5.2", // v5.2.6
        "symfony/web-profiler-bundle": "^5.2" // v5.2.6
    }
}

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