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Package php-di-slim3-bridge
Short Description PHP-DI integration in Slim
License MIT
Informations about the package php-di-slim3-bridge
PHP-DI integration with Slim
This package configures Slim 3 to work with the PHP-DI container.
The full documentation is here: http://php-di.org/doc/frameworks/slim.html
Why?
PHP-DI as a container
The most obvious difference with the default Slim installation is that you will be using PHP-DI as the container, which has the following benefits:
- autowiring
- powerful configuration format
- support for modular systems
- ...
If you want to learn more about all that PHP-DI can offer have a look at its introduction.
Controllers as services
While your controllers can be simple closures, you can also write them as classes and have PHP-DI instantiate them only when they are called:
Dependencies can then be injected in your controller using autowiring, PHP-DI config files or even annotations.
Controller parameters
By default, Slim controllers have a strict signature: $request, $response, $args
. The PHP-DI bridge offers a more flexible and developer friendly alternative.
Controller parameters can be any of these things:
- the request or response (parameters must be named
$request
or$response
) - route placeholders
- request attributes
- services (injected by type-hint)
You can mix all these types of parameters together too. They will be matched by priority in the order of the list above.
Request or response injection
You can inject the request or response in the controller parameters by name:
As you can see, the order of the parameters doesn't matter. That allows to skip injecting the $request
if it's not needed for example.
Route placeholder injection
As you can see above, the route's URL contains a name
placeholder. By simply adding a parameter with the same name to the controller, PHP-DI will directly inject it.
Request attribute injection
As you can see above, a middleware sets a name
attribute. By simply adding a parameter with the same name to the controller, PHP-DI will directly inject it.
Service injection
To inject services into your controllers, you can write them as classes. But if you want to write a micro-application using closures, you don't have to give up dependency injection either.
You can inject services by type-hinting them:
Note: you can only inject services that you can type-hint and that PHP-DI can provide. Type-hint injection is simple, it simply injects the result of
$container->get(/* the type-hinted class */)
.
Documentation
The documentation can be read here: http://php-di.org/doc/frameworks/slim.html
All versions of php-di-slim3-bridge with dependencies
php-di/php-di Version ^6.0.0
php-di/invoker Version ^2.0.0
slim/slim Version ^4.2.0