30183168
Description
Quiz by Pascal Bartl, updated more than 1 year ago
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Created by Pascal Bartl
over 3 years ago
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Question 1
Question
Which statements about Extbase controllers are correct? (2)
Answer
-
Extbase controllers are always interfaces
-
Every controller must directly extend the basis controller TYPO3\CMS\Extbase\Mvc\Controller\ActionController
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The visibility of all properties should be protected
-
All method names in a controller must end in Action()
-
The logic implemented in controllers should be kept to a minimum
Question 2
Question
What are the characteristics of the methods redirect() and forward() in a controller? (2)
Answer
-
The redirect() method requires the controller name of the target as an argument
-
The redirect() method initiates a new HTTP request
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The forward() method transfers the request to the target action automatically
-
The forward() method changes the URL in the way that the action name appears
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The redirect() and forward() methods both clear the cache
Question 3
Question
What are the differences between the controller methods forward() and redirect()? (2)
Answer
-
There are no differences
-
Method $this->forward() is set as $this->request->setDispatched(false)
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Method $this->redirect() initiates a new HTTP request; method $this->forward() does not
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Method $this->forward() does not accept any arguments, $this->redirect() does
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Method $this->redirect() renders a template by default; method $this->forward() does not
Question 4
Question
How can you generate a HTTP status code 400? (2)
Answer
-
die(400, null, 'Bad Request.')
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$this->addError(400, null, 'Bad Request.')
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new \TYPO3\CMS\Extbase\Error\Error(400, null, 'Bad Request.')
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$this->throwStatus(400, null, 'Bad Request.')
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Instantiate a response object and set the status code as \GuzzleHttp\Psr7\Response(400)
Question 5
Question
What are the characteristics of controllers? (2)
Answer
-
Controllers are the control and central processing unit in the MVC stack
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Controllers are responsible for initialising domain models
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The logic implemented in controllers should be kept to a minimum
-
All business logic should be implemented in controllers
-
Controllers validate all objects
Question 6
Question
Which statements about “actions” in Extbase’s controller/action concept are correct? (3)
Answer
-
Action methods are always static functions
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Actions are public methods of a controller class
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Names of action methods always end in Action, for example listAction()
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Each action must be stored in a separate PHP file under Classes/Actions/
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To be able to request an action of a plugin, the action has to be registered by using configurePlugin()
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Action methods must always return a string (this is the content shown in the frontend)
Question 7
Question
How can a fallback to the default action be achieved, in order to prevent an error if a non-configured action is
called? (1)
Answer
-
This is the default behaviour of Extbase
-
An appropriate configuration in file ext_localconf.php is required
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The TypoScript setting callDefaultActionIfActionCantBeResolved can be configured
-
An errorAction() method can be implemented in the controller
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The key routing can be used in TypoScript
Question 8
Question
How can a “Page Not Found” error message be displayed – HTTP code 404 – if a non-configured action is called? (1)
Answer
-
This is the default behaviour of Extbase
-
An appropriate configuration in the ext_localconf.php file is required
-
The TypoScript setting exceptionHandler can be configured
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An errorAction() method can be implemented in the controller
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The TypoScript setting throwPageNotFoundExceptionIfActionCantBeResolved can be configured
Question 9
Question
Which approach is officially recommended to get an object in a controller? (1)
Answer
-
use \Vendor\MyExtension\Domain\Repository\TagRepository; ... $this->objectManager->get(TagRepository::class)
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use \Vendor\MyExtension\Domain\Repository\TagRepository; ... $this->objectManager->create(TagRepository::class)
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new \Vendor\MyExtension\Domain\Repository\TagRepository
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use \Vendor\MyExtension\Domain\Repository\TagRepository; ... $this->instanceManager->make(TagRepository::class)
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use \TYPO3\CMS\Core\Utility\GeneralUtility; use \Vendor\MyExtension\Domain\Repository\TagRepository; ... GeneralUtility::makeInstance(TagRepository::class);
Question 10
Question
Where is the Object Manager available as $this->objectManager by default? (2)
Answer
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In repositories
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In ViewHelpers
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In Fluid templates
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In controllers
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In domain models
Question 11
Question
Which statements about the view in a controller are correct? (2)
Answer
-
You can access the output of a view by using the method render()
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The view can only be rendered at the end of an action method
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The view is available in the action as $this->view
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To prevent rendering the view, the action must return false
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It is not possible to render a different view than the default one
Question 12
Question
How do you prevent an action from being executed? (2)
Answer
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The action can be omitted from the TypoScript key switchableControllerActions
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The action can be omitted from the first array of the plugin configuration in file ext_localconf.php
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The action can be omitted from the second array of the plugin configuration in file ext_localconf.php
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By setting the attribute deactivate in file tables.php
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By configuring the action in the page TS key deniedActions
Question 13
Question
How can an invalid domain object $blog be accessed in an action new? (2)
Answer
-
This is always possible
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Via the initializeNewAction() method
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Via the errorNewAction() method
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Via the newAction() method if the annotation @ignorevalidation $blog is set
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Via the __destruct() method
Question 14
Question
What is the purpose of the method errorAction() in a controller? (1)
Answer
-
This method is executed if an error in the controller occurs
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This method is executed if an error in the view occurs
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This method is executed before the primary action
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This method is always executed after the primary action
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This method is executed if a validation error in the controller occurs
Question 15
Question
How can validation errors of an object $blog be accessed in a controller? (1)
Answer
-
This is not possible
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By $blog->getErrors()
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By $this->getErrors()
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By $this->controllerContext->getRequest()->getErrors()
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By $this->errors
Question 16
Question
How can a non-persisting object be created from a GET request? (1)
Answer
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This happens automatically if the object is passed to the method as a parameter in the action
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By using the “Object Type Converter”
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By manually executing convertArrayToObject() in the Property Mapper
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By setting the property mapping in TypoScript
Question 17
Question
What is the purpose of the following method in a controller? (2)
use \TYPO3\CMS\Core\Utility\ArrayUtility;
...
public function initializeAction()
{
$settings = [
...
];
ArrayUtility::mergeRecursiveWithOverrule(
$this->settings,
$settings
);
}
Answer
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FlexForm settings are merged with TypoScript settings
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Custom settings are merged with TypoScript settings
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All empty values in the arrays, both $settings and $this->settings, are removed
-
Keys with a value __UNSET in the array $settings unset array keys with the same name in the array $this->settings
Question 18
Question
How do you retrieve the data of the current content object in Extbase? (1)
Answer
-
By accessing getContentObject()->data of the ConfigurationManager
-
By accessing $this->request->getContentObjectData()
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By accessing $this->cObj->data
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By accessing $this->cObj->cObjGetSingle()
Question 19
Question
In which file are custom Type Converters registered? (1)
Answer
-
File ext_tables.php
-
File ext_localconf.php
-
The controller
-
File Configuration/TCA/table.php
-
File Configuration/TypoScript/setup.typoscript
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