Demystify Symfony - Understanding the functions of the framework

"Demystify Symfony - Understanding the functions of the framework" -
Web Summer Camp 2024

"Symfony offers many great functions that make our lives much easier. For example, thanks to dependency injection and Service Container, we never have to worry about having a class available anywhere.
But what has been given to us for years is actually not even a function of PHP.
This and other features of the framework that we use so often. Let's take a closer look at how they work and make their magic easy to understand."

Transcript

1. Demystify Symfony Understanding the functions of the framework
2. Hi, I’m Oliver Kossin – Symfony and PHP-Developer for 9 Years – Work in Cologne at – Loves football, traveling and DIY projects https://github.com/TheCadien
3. „Demystify“ Symfony
4. So what do we want to do?
5. First clarify „Symfony“
6. First clarify „Symfony“
7. – 2007: Symfony 1.0
8. – 2007: Symfony 1.0 – 2011: Symfony 2.0 (New Architecture)
9. – 2007: Symfony 1.0 – 2011: Symfony 2.0 (New Architecture) – 2015: Symfony 3.0 (Autowiring)
10. – 2007: Symfony 1.0 – 2011: Symfony 2.0 (New Architecture) – 2015: Symfony 3.0 (Autowiring) – 2017: Symfony 4.0 (SymfonyFlex)
11. – 2007: Symfony 1.0 – 2011: Symfony 2.0 (New Architecture) – 2015: Symfony 3.0 (Autowiring) – 2017: Symfony 4.0 (SymfonyFlex) – 2019: Symfony 5.0
12. – 2007: Symfony 1.0 – 2011: Symfony 2.0 (New Architecture) – 2015: Symfony 3.0 (Autowiring) – 2017: Symfony 4.0 (SymfonyFlex) – 2019: Symfony 5.0 – 2021: Symfony 6.0
13. – 2007: Symfony 1.0 – 2011: Symfony 2.0 (New Architecture) – 2015: Symfony 3.0 (Autowiring) – 2017: Symfony 4.0 (SymfonyFlex) – 2019: Symfony 5.0 – 2021: Symfony 6.0 – 2023: Symfony 7.0 (PHP Attributes)
14. – 2007: Symfony 1.0 – 2011: Symfony 2.0 (New Architecture) – 2015: Symfony 3.0 (Autowiring) – 2017: Symfony 4.0 (SymfonyFlex) – 2019: Symfony 5.0 – 2021: Symfony 6.0 – 2023: Symfony 7.0 (PHP Attributes) – 2025: Symfony 8.0
15. – Patches are released every month, security fi xes immediately – Minor versions twice a year (Next Minor Release November 2024) – Major versions every other year 7.1.2
16. „Symfony“ is just a component Framework
17. Con fi g, Console, DependencyInjection, DotEnv, ErrorHandler, EventDispatcher, Form, Security, HttpFoundation, HttpKernel , Mailer, Noti fi er, Messenger, Process, Routing, Serializer, Work fl ow, Yaml ….
18. https://github.com/symfony/framework-bundle
19. „FrameworkBundle provides a tight integration between Symfony components and the Symfony full-stack framework.“
21. –
22. „Demystify Symfony“
23. „Demystify the Container“
24. „Demystify the Container“ „Demystify the magic“
25. The Container…
26. The Container…
27. The Container…
28. Oliver while he tries to explain!
29. „Your application is full of useful objects: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
31. The Star fl eet – Founded 2151
32. The Star fl eet – Founded 2151 – Exploration (where no one has gone before)
33. The Star fl eet – Is an organisation
34. The Star fl eet – Is an organisation – A List of – Ships – Star fl eet of fi cer
35. The Star fl eet – Is an organisation – A List of IDs – Ships – Star fl eet of fi cer – …
36. NCC-1701 D (Enterprise)
37. NCC-1701 D (Enterprise) Galaxy Class
38. NCC-1701 D (Enterprise) Galaxy Class NCC-71832 (Odyssey)
39. NCC-1701 D NCC-71832
40. The Star fl eet
41. The Star fl eet – NCC-1701 D – SC-231-427 – SP-937-215 – NX-01 – NCC-1701 – NCC-74656 – 47-Alpha–612 – …
42. „Your application is full of useful objects: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
43. „Your application is full of useful objects: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
44. „Your Star fl eet is full of useful objects: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
45. „Your Star fl eet is full of useful objects: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
46. „Your Star fl eet is full of useful Starships: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
47. „Your Star fl eet is full of useful Starships: a "Mailer" object might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
48. „Your Star fl eet is full of useful Starships: a „Galaxy Class" Ship might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
49. „Your Star fl eet is full of useful Starships: a „Galaxy Class" Ship might help you send emails while another object might help you save things to the database. 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
50. „Your Star fl eet is full of useful Starships: a „Galaxy Class" Ship might help you explore the Universe!! 
 […]
 
 In Symfony, these useful objects are called services and each service lives inside a very special object called the service container“
51. The Container… is the Star fl eet!!
52. Oliver while talking about Star Trek
53. Lets build by our own
54. https://github.com/qossmic/web-summer-camp-2024 Clone me !
55. Step 1 - Birth of Star fl eet
66. Lets do that !
67. Task: Build a simple „Star fl eet“ Class (Container) by using the psr/container interface.
68. Hint:
69. Step 2 - Engage!!!! (bring me the Warp!)
73. –
77. Task: Build a method „make“ which takes over the instantiation of the class, with constructor properties
78. Hint – https://www.php.net/manual/en/class.re fl ectionclass.php
79. Hint 2 Think about recursive calls
80. Hint 3
81. Step 3 - Say my name
87. Task: Extend the „make“ method so that external dependencies such as the con fi guration of the „name“ can be passed in.
88. Hint Unfortunately, the code cannot derive the name. A con fi g will be necessary.
89. Step 4 - Becoming sustainable
90. Miles O'Brien
91. Miles O'Brien – Star fl eet Chief
92. Miles O'Brien – Star fl eet Chief – Husband of Keiko O'Brien
93. Miles O'Brien – Star fl eet Chief – Husband of Keiko O’Brien – Enterprise D for 6 years
95. Miles O'Brien – Star fl eet Chief – Husband of Keiko O’Brien – Enterprise D for 6 years – Since 2369 on Deep Space 9
97. Miles O'Brien – Star fl eet Chief – Husband of Keiko O’Brien – Enterprise D for 6 years – Since 2369 on Deep Space 9 – Work also at the De fi ant
102. –
103. Task: Set a newly instantiated service with a new ID and use it again if a service of the same instance already exists.
104. Step 5 - The Star fl eet Command!
105. Star fl eet Command – Star fl eet Administration
106. Star fl eet Command
 – Star fl eet Administration – Registration new Ships – Registration new Of fi cer – ..
108. Build a new class "Star fl eetCommand" to inherit Star fl eet. (Like our Con fi g example) Afterwards the Star fl eet should be refactored, so that only the 3 methods "get", „has" and "set" are left. Everything else will be moved to the Star fl eet Command. New services should now be "registered" via the SC. Task:
109. A DTO to store the „register“ data could be helpfull Hint:
110. Step 6 - The next Generation!
112. Extend the "addArguments" so that references to other services can also be con fi gured. Task:
113. Maybe a few rows and a small DTO could be enough ;) Hint:
118. Interested in more ?
119. Interested in more ?
121. Cheers
122. Thank you! QOSSMIC.com