CODEWITHSUNDEEP
controllerzend-framework2
Eae
Eae

Reputation: 4321

Zend Framework 2. Invokables

                return array(
                'router' => array(
                    'routes' => array(
                        'wall' => array(
                            'type' => 'Zend\Mvc\Router\Http\Segment',
                            'options' => array(
                                'route' => '/api/wall[/:id]',
                                'constraints' => array(
                                    'id' => '\w+'
                                ),
                                'defaults' => array(
                                    'controller' => 'Wall\Controller\Index'
                                ),
                            ),
                        ),
                    ),
                ),
                'controllers' => array(
                    'invokables' => array(
                        'Wall\Controller\Index' => 'Wall\Controller\IndexController',
                    ),
                ),
            );

I am looking at the configuration for a module Wall which is part of a JSON restfull API program with Zend Framework 2. In /myprogram/Wall/src/Controller directory there is a file IndexController.php and inside it the namespace is declared 'namespace Wall\Controller'. My question is about 'invokables'. The right hand side of '=>' makes sense to me it is referencing the controllers class name and namespace if I understand correctly. What is on the left hand side of '=>' I am still looking for an explanation of what is 'Wall\Controller\Index'.

Thank you for posting...

Upvotes: 1

Views: 1660

Answers (2)

Sam
Sam

Reputation: 16455

It's really just a key. Arrays within the configuration are stored with the schema key => value. And the string Module\Controller\Foo is just it's name. You could write module-controller-foo, too, and use it like this within your route configuration.

Upvotes: 4

ek9
ek9

Reputation: 3442

invokables defines classes you can call. You would usually define classes that can be invoked like this:

'invokables' => array(
    'Some\Namespace\Class',
    'Some\Namespace\OtherClass',
),

You can also define aliases, by passing an array, like in the example you gave:

'invokables' => array(
    'Wall\Controller\Index' => 'Wall\Controller\IndexController',
),

It defines Wall\Controller\Index invokable as an alias for Wall\Controller\IndexController.

Upvotes: 5

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