Chapters

25 Chapters | 2:34:05 |

01

Bundles!

4:31
02

New Bundle, New Service: KnpTimeBundle

5:09
03

Finding & Using the Services from a Bundle

6:38
04

The HTTP Client Service

6:23
05

The Cache Service

8:05
06

Bundle Config (to Control Bundle Services)

6:03
07

Configuring the Cache Service

5:39
08

debug:container & How Autowiring Works

7:41
09

Environments

8:55
10

The "prod" Environment

6:06
11

Creating a Service

5:55
12

Dependency Injection

9:34
13

Parameters

6:45
14

Manual Service Config in services.yaml

4:24
15

All About services.yaml

10:27
16

Bind Arguments Globally

3:40
17

Named Autowiring & Scoped HTTP Clients

4:43
18

Non-Autowireable Services

6:41
19

Controllers are Services Too!

2:49
20

Environment Variables

7:53
21

The Secrets Vault

5:46
22

Reading Secrets vs Env Vars

6:53
23

MakerBundle & Autoconfiguration

4:27
24

Customizing a Command

4:20
25

Command: Autowiring & Interactive Questions

4:38

> Symfony 6 > Symfony 6 Fundamentals: Services, Config & Environments

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03.

Finding & Using the Services from a Bundle

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Francois 2 years ago

I have a question about

public function browse(DateTimeFormatter $timeFormatter, string $slug = null): Response

Is it the same as

public function browse($timeFormatter = new DateTimeFormatter, string $slug = null): Response

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Victor SFCASTS Francois 2 years ago edited

Hey Francois,

Well, almost :) In the 2nd case if the browse() method will be called without arguments - the $timeFormatter will be, by default, set to new DateTimeFormatter while in the first case, it will throw because the 1st argument is required there :) So, it's just the default value for the first argument in your 2nd example.

And so, the second case should be written as:

public function browse(DateTimeFormatter $timeFormatter = new DateTimeFormatter, string $slug = null): Response

In case you want to allow only DateTimeFormatter instances as the 1st argument.

Cheers!

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Francois Victor 2 years ago

My original concern is that the $timeFormatter function argument seems to pop out of nowhere (i.e. I do not see such kind of variable out there).

I will try to recap my thoughts here:

the DateTimeFormatter class is a service, i.e., it has no property
does it mean that its methods can be called without instantiating the class (similarly to one can do with a static class)?

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Victor SFCASTS Francois 2 years ago

Hey Francois,

Then I'm still not sure I understand you. I suppose you wrote that $timeFormatter = new DateTimeFormatter in your method signature, no? Because I don't see it in this video.

the DateTimeFormatter class is a service, i.e., it has no property

Great, then the Symfony Dependency Injection Container will create and inject it for you. But still don't see what you mean about "has no property".

does it mean that its methods can be called without instantiating the class (similarly to one can do with a static class)?

Static methods can be called without instantiating a class because they are static. For normal methods - you can call them only from an instance of a class of course.

I hope it helps!

Cheers!

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Francois Victor 2 years ago

I looked at the documentation for Dependency Injection. If I understand well, this is not a base level PHP behavior, but something extra built on top of PHP. Services use dependency injection.

Is this right?

François

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Victor SFCASTS Francois 2 years ago

Hey Francois,

Yes, sure! you may think of dependency injection (DI) and dependency injection container (DIC) as patterns. And yes, it's not a native PHP function but a behavior implemented in a Symfony component.

Cheers!

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unknown 3 years ago edited

Hey,

I get at using this bundle the exception ClassNotFoundError in the file mixed_vinyl\vendor\symfony\translation\LocaleSwitcher.php at line 37.

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MolloKhan SFCASTS unknown 3 years ago

Hey Stefaaan,

Do you have installed the PHP intl extension on your computer?

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unknown MolloKhan 3 years ago

Hey MolloKhan,

thanks for your reply.

No, i hadn't installed this extension. After installing it in the php.ini and restarting the local web server it works. Thank you.

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Symfony 6.1

What PHP libraries does this tutorial use?

// composer.json
{
    "require": {
        "php": ">=8.1",
        "ext-ctype": "*",
        "ext-iconv": "*",
        "knplabs/knp-time-bundle": "^1.18", // v1.19.0
        "symfony/asset": "6.1.*", // v6.1.0-RC1
        "symfony/console": "6.1.*", // v6.1.0-RC1
        "symfony/dotenv": "6.1.*", // v6.1.0-RC1
        "symfony/flex": "^2", // v2.4.5
        "symfony/framework-bundle": "6.1.*", // v6.1.0-RC1
        "symfony/http-client": "6.1.*", // v6.1.0-RC1
        "symfony/monolog-bundle": "^3.0", // v3.8.0
        "symfony/runtime": "6.4.3", // v6.4.3
        "symfony/twig-bundle": "6.1.*", // v6.1.0-RC1
        "symfony/ux-turbo": "^2.0", // v2.1.1
        "symfony/webpack-encore-bundle": "^1.13", // v1.14.1
        "symfony/yaml": "6.1.*", // v6.1.0-RC1
        "twig/extra-bundle": "^2.12|^3.0", // v3.4.0
        "twig/twig": "^2.12|^3.0" // v3.4.0
    },
    "require-dev": {
        "symfony/debug-bundle": "6.1.*", // v6.1.0-RC1
        "symfony/maker-bundle": "^1.41", // v1.42.0
        "symfony/stopwatch": "6.1.*", // v6.1.0-RC1
        "symfony/web-profiler-bundle": "6.1.*" // v6.1.0-RC1
    }
}

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