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60 lines
1.1 KiB
Markdown
60 lines
1.1 KiB
Markdown
---
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id: 764a4845-b98c-43f6-9b9c-f5b6cc849e7f
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title: Local Service Binding
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---
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# Introduction
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Since [Symfony 4.0](20201109140137-symfony_4_0) autowiring scalar
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arguments has been simplified with local binding:
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# Syntax
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## Pre Symfony 4.0
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``` yaml
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services:
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_defaults:
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autowire: true
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autoconfigure: true
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public: false
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App\Some\Service1:
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$projectDir: '%kernel.project_dir%'
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App\Some\Service2:
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$projectDir: '%kernel.project_dir%'
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App\Some\Service3:
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$projectDir: '%kernel.project_dir%'
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```
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## Post Symfony 4.0
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``` yaml
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services:
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_defaults:
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autowire: true
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autoconfigure: true
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public: false
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bind:
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$projectDir: '%kernel.project_dir%'
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```
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## Explicitly define injection services
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``` yaml
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# when services created/defined in this file inject 'BarInterface',
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# use the '@normal_bar_service' ...
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services:
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_defaults:
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bind:
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BarInterface: "@normal_bar_service"
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# ... except for this particular service, which uses a different service
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Foo:
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bind:
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BarInterface: "@special_bar_service"
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```
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