Chapters

29 Chapters | 1:34:37 |

01

Introduction

1:00
02

ManyToOne Doctrine Relationships

4:40
03

Sharing Data between Fixture Classes

1:49
04

Restricting Edit Access to Owners

1:53
05

Using a shortcut Base Controller Class

2:30
06

Using PHPDoc for Auto-Completion

1:26
07

OneToMany: The Inverse Side of a Relationship

5:37
08

Doctrine Extensions: Sluggable and Timestampable

4:30
09

Using the slug in the Event URL

2:04
10

Adding createdAt and updatedAt Timestampable Fields

1:41
11

Creating a Custom orderBy Query

2:11
12

ManyToMany Relationship

2:37
13

Using the ManyToMany so Users can Attend an Event

4:53
14

More with ManyToMany: Avoiding Duplicates

2:51
15

JSON up in your Response

2:50
16

Come on, Set the Content-Type Header!

3:19
17

Adding the AJAX Touch: JavaScript

2:16
18

Customizing Error Pages and How Errors are Handled

6:01
19

Render another Controller in Twig

4:28
20

Creating a Pretty CSV Download

4:19
21

Your Very First Service

4:42
22

Symfony Overlord: The Service Container

4:58
23

Configuration Loading and Type-Hinting

2:01
24

Dependency Inject All the Things

3:14
25

Twig Extensions and Dependency Injection Tags

4:33
26

Doctrine is in your Lifecycle (with Callbacks)

2:08
27

Doctrine Event Listeners

5:59
28

Doctrine Listeners on Update

2:48
29

Keep Going!

1:19

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24.

Dependency Inject All the Things

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2 Comments

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Oscar Untied 8 years ago

Why not extend the Container on the service class?

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weaverryan SFCASTS Oscar Untied 8 years ago

Oscar!

You're my favorite today. This is a *very* insightful question. The trick of extending the Controller and magically getting access to Symfony's container *only* works for controller classes. Basically, your controller is the only object where you *can't* control how it's instantiated: Symfony always (behind the scenes) instantiates a new instance of your controller and passes it *no* constructor arguments. In order to get access to the container, Symfony checks to see if your controller extends the base controller (technically, if it implements this thing called the ContainerAwareInterface - http://knpuniversity.com/sc.... If it does, it passes the container to our controller, so that we have access to all of our useful objects.

But, that doesn't happen with services: we're in complete control of how we're instantiated (via services.yml), so we just tell Symfony exactly what we need. This also helps keep our services focused: instead getting passed the entire container (which admittedly, would be simple at first), we dependency-inject only the exact objects we need. The cool part about this is that when I look at your service object later, I immediately understand what it does and what it does *not* do. For example, if I don't see some Mailer object in your constructor, I can safely assume that your service does not send emails (and if I'm debugging some email problem, I can move on to look somewhere else).

Let me know if this helps! Cheers!

1 |

Symfony 2

What PHP libraries does this tutorial use?

// composer.json
{
    "require": {
        "php": ">=5.3.3",
        "symfony/symfony": "~2.4", // v2.4.2
        "doctrine/orm": "~2.2,>=2.2.3", // v2.4.2
        "doctrine/doctrine-bundle": "~1.2", // v1.2.0
        "twig/extensions": "~1.0", // v1.0.1
        "symfony/assetic-bundle": "~2.3", // v2.3.0
        "symfony/swiftmailer-bundle": "~2.3", // v2.3.5
        "symfony/monolog-bundle": "~2.4", // v2.5.0
        "sensio/distribution-bundle": "~2.3", // v2.3.4
        "sensio/framework-extra-bundle": "~3.0", // v3.0.0
        "sensio/generator-bundle": "~2.3", // v2.3.4
        "incenteev/composer-parameter-handler": "~2.0", // v2.1.0
        "doctrine/doctrine-fixtures-bundle": "~2.2.0", // v2.2.0
        "ircmaxell/password-compat": "~1.0.3", // 1.0.3
        "phpunit/phpunit": "~4.1", // 4.1.0
        "stof/doctrine-extensions-bundle": "~1.1.0" // v1.1.0
    }
}

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