Symfony 4 - Let's get dangerous

Symfony 4 is here soon, it is time to get ready, it is time to get dangerous. I tried to cover as much as I could and tried to pick most interesting topics.

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1. @kunicmarko20
   Symfony 4
   Let’s get dangerous
   

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2. @kunicmarko20
   Symfony 3.4
   -
   Deprecated
   features
   Symfony 4
   =
   

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3. @kunicmarko20
   Symfony 3.4
   -
   Deprecated
   features
   Symfony 4
   =
   PHP ^5.5 PHP ^7.1
   

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   Symfony Flex Symfony 4
   ≠
   

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5. @kunicmarko20
   Symfony Flex
   

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   ● Composer plugin
   ● Replaces Symfony Standard Edition
   ● Compose your Application
   ● Recipes (Official, Contrib)
   ● Depend on the individual Symfony Components
   ● Bundle-less Application
   ● New Directory structure
   ● Environment Variables
   ● Unified Web Front Controller
   ● Defining compiler passes in the kernel
   ● Symfony 3.3+
   

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   Directory Structure
   

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8. @kunicmarko20
   Environment Variables
   

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   ● Runtime Environment Variables
   

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    ● Runtime Environment Variables
    ● Deprecated the SYMFONY__ environment variables
    

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    Before
    After
    

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    ● Runtime Environment Variables
    ● Deprecated the SYMFONY__ environment variables
    ● Advanced environment variables
    

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    ● Runtime Environment Variables
    ● Deprecated the SYMFONY__ environment variables
    ● Advanced environment variables
    ● Dotenv component
    ● No more --env=prod --no-debug
    

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    DI Container Changes
    

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    ● Services are Loaded Automatically
    ● Type-hint instead of Service id
    ● Controllers are Registered as Services
    ● Auto-tagging with autoconfigure
    ● Services private by Default
    ● Named args
    ● Local service binding
    

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    Workflow Component
    

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    ● Workflow, State Machine
    ● Single/Multiple State
    ● Transitions
    ● Transition Events
    

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29. @kunicmarko20
    Transition Events
    ● Guard
    ● Leave
    ● Transition
    ● Enter
    ● Entered
    ● Announce
    ● workflow.[event]
    ● workflow.[workflow].[event]
    ● workflow.[workflow].[event].[transition]
    

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31. @kunicmarko20
    http://symfony-workflow-demo.herokuapp.com
    

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32. @kunicmarko20
    Want to know more?
    Knowing your state machines
    https://www.youtube.com/watch?v=S87111sM7y4
    by Tobias Nyholm @ SymfonyCon Berlin 2016
    

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33. @kunicmarko20
    Cache Component
    

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    ● PSR-6: Caching Interface
    

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    ● PSR-6: Caching Interface
    ● PSR-16: Common Interface for Caching
    Libraries
    

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    ● PSR-6: Caching Interface
    ● PSR-16: Common Interface for Caching
    Libraries
    ● Tag-based invalidation
    

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40. @kunicmarko20
    Let’s implement Cache Component
    

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41. @kunicmarko20
    composer require snc/redis-bundle predis/predis
    

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49. @kunicmarko20
    What else has changed?
    

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50. @kunicmarko20
    ● User value resolver for controllers
    

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51. @kunicmarko20
    Before
    

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    After
    

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    ● User value resolver for controllers
    ● PHP constants in YAML files
    

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    ● User value resolver for controllers
    ● PHP constants in YAML files
    ● Project root directory parameter
    

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    %kernel.root_dir%/../web/
    

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    %kernel.root_dir%/../web/
    

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    %kernel.project_dir%/web/
    

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59. @kunicmarko20
    ● User value resolver for controllers
    ● PHP constants in YAML files
    ● Project root directory parameter
    ● Asset preloading with HTTP/2 Push
    

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60. @kunicmarko20
    Read more: https://dunglas.fr/2017/10/symfony-4-http2-push-and-preloading
    

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61. @kunicmarko20
    ● User value resolver for controllers
    ● PHP constants in YAML files
    ● Project root directory parameter
    ● Asset preloading with HTTP/2 Push
    ● Import config files with glob patterns
    

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62. @kunicmarko20
    

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63. @kunicmarko20
    ● User value resolver for controllers
    ● PHP constants in YAML files
    ● Project root directory parameter
    ● Asset preloading with HTTP/2 Push
    ● Import config files with glob patterns
    ● Lock Component
    

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64. @kunicmarko20
    

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65. @kunicmarko20
    ● User value resolver for controllers
    ● PHP constants in YAML files
    ● Project root directory parameter
    ● Asset preloading with HTTP/2 Push
    ● Import config files with glob patterns
    ● Lock component
    ● Deprecated bundle inheritance
    

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66. @kunicmarko20
    ● User value resolver for controllers
    ● PHP constants in YAML files
    ● Project root directory parameter
    ● Asset preloading with HTTP/2 Push
    ● Import config files with glob patterns
    ● Lock component
    ● Deprecated bundle inheritance
    ● Improved the overriding of templates
    

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67. @kunicmarko20
    

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68. @kunicmarko20
    ● User value resolver for controllers
    ● PHP constants in YAML files
    ● Project root directory parameter
    ● Asset preloading with HTTP/2 Push
    ● Import config files with glob patterns
    ● Lock component
    ● Deprecated bundle inheritance
    ● Improved the overriding of templates
    ● Better console exceptions
    

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69. @kunicmarko20
    Before
    After
    

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70. @kunicmarko20
    ● User value resolver for controllers
    ● PHP constants in YAML files
    ● Project root directory parameter
    ● Asset preloading with HTTP/2 Push
    ● Import config files with glob patterns
    ● Lock component
    ● Deprecated bundle inheritance
    ● Improved the overriding of templates
    ● Better console exceptions
    ● Lazy commands
    

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71. @kunicmarko20
    

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72. @kunicmarko20
    ● User value resolver for controllers
    ● PHP constants in YAML files
    ● Project root directory parameter
    ● Asset preloading with HTTP/2 Push
    ● Import config files with glob patterns
    ● Lock component
    ● Deprecated bundle inheritance
    ● Improved the overriding of templates
    ● Better console exceptions
    ● Lazy commands
    ● Improved comparison constraints
    

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73. @kunicmarko20
    

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74. @kunicmarko20
    ● User value resolver for controllers
    ● PHP constants in YAML files
    ● Project root directory parameter
    ● Asset preloading with HTTP/2 Push
    ● Import config files with glob patterns
    ● Lock component
    ● Deprecated bundle inheritance
    ● Improved the overriding of templates
    ● Better console exceptions
    ● Lazy commands
    ● Improved comparison constraints
    ● Groups support for the Valid constraint
    

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75. @kunicmarko20
    ● User value resolver for controllers
    ● PHP constants in YAML files
    ● Project root directory parameter
    ● Asset preloading with HTTP/2 Push
    ● Import config files with glob patterns
    ● Lock component
    ● Deprecated bundle inheritance
    ● Improved the overriding of templates
    ● Better console exceptions
    ● Lazy commands
    ● Improved comparison constraints
    ● Groups support for the Valid constraint
    ● Argon2i password hasher
    

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76. @kunicmarko20
    Similar Talks
    ● Symfony 4 & Symfony Flex - Core ideas, features and
    improvements by Victoria Quirante
    ● Symfony 4 Run-through by Kévin Dunglas
    ● Get ready for Symfony 4 by Christian Flothmann
    ● Getting ready for Symfony 4 by Denis Brumann
    

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77. @kunicmarko20
    The End
    

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