class RobotFormBase
Same name in other branches
- 8.x-1.x config_entity_example/src/Form/RobotFormBase.php \Drupal\config_entity_example\Form\RobotFormBase
- 4.0.x modules/config_entity_example/src/Form/RobotFormBase.php \Drupal\config_entity_example\Form\RobotFormBase
Class RobotFormBase.
Typically, we need to build the same form for both adding a new entity, and editing an existing entity. Instead of duplicating our form code, we create a base class. Drupal never routes to this class directly, but instead through the child classes of RobotAddForm and RobotEditForm.
Hierarchy
- class \Drupal\Core\Form\FormBase implements \Drupal\Core\Form\FormInterface, \Drupal\Core\DependencyInjection\ContainerInjectionInterface uses \Drupal\Core\DependencyInjection\DependencySerializationTrait, \Drupal\Core\Logger\LoggerChannelTrait, \Drupal\Core\Messenger\MessengerTrait, \Drupal\Core\Routing\RedirectDestinationTrait, \Drupal\Core\StringTranslation\StringTranslationTrait
- class \Drupal\Core\Entity\EntityForm extends \Drupal\Core\Form\FormBase implements \Drupal\Core\Entity\EntityFormInterface
- class \Drupal\config_entity_example\Form\RobotFormBase extends \Drupal\Core\Entity\EntityForm
- class \Drupal\Core\Entity\EntityForm extends \Drupal\Core\Form\FormBase implements \Drupal\Core\Entity\EntityFormInterface
Expanded class hierarchy of RobotFormBase
Related topics
File
-
modules/
config_entity_example/ src/ Form/ RobotFormBase.php, line 21
Namespace
Drupal\config_entity_example\FormView source
class RobotFormBase extends EntityForm {
/**
* An entity query factory for the robot entity type.
*
* @var \Drupal\Core\Entity\EntityStorageInterface
*/
protected $entityStorage;
/**
* Construct the RobotFormBase.
*
* For simple entity forms, there's no need for a constructor. Our robot form
* base, however, requires an entity query factory to be injected into it
* from the container. We later use this query factory to build an entity
* query for the exists() method.
*
* @param \Drupal\Core\Entity\EntityStorageInterface $entity_storage
* An entity query factory for the robot entity type.
*/
public function __construct(EntityStorageInterface $entity_storage) {
$this->entityStorage = $entity_storage;
}
/**
* Factory method for RobotFormBase.
*
* When Drupal builds this class it does not call the constructor directly.
* Instead, it relies on this method to build the new object. Why? The class
* constructor may take multiple arguments that are unknown to Drupal. The
* create() method always takes one parameter -- the container. The purpose
* of the create() method is twofold: It provides a standard way for Drupal
* to construct the object, meanwhile it provides you a place to get needed
* constructor parameters from the container.
*
* In this case, we ask the container for an entity query factory. We then
* pass the factory to our class as a constructor parameter.
*/
public static function create(ContainerInterface $container) {
$form = new static($container->get('entity_type.manager')
->getStorage('robot'));
$form->setMessenger($container->get('messenger'));
return $form;
}
/**
* Overrides Drupal\Core\Entity\EntityFormController::form().
*
* Builds the entity add/edit form.
*
* @param array $form
* An associative array containing the structure of the form.
* @param \Drupal\Core\Form\FormStateInterface $form_state
* An associative array containing the current state of the form.
*
* @return array
* An associative array containing the robot add/edit form.
*/
public function buildForm(array $form, FormStateInterface $form_state) {
// Get anything we need from the base class.
$form = parent::buildForm($form, $form_state);
// Drupal provides the entity to us as a class variable. If this is an
// existing entity, it will be populated with existing values as class
// variables. If this is a new entity, it will be a new object with the
// class of our entity. Drupal knows which class to call from the
// annotation on our Robot class.
$robot = $this->entity;
// Build the form.
$form['label'] = [
'#type' => 'textfield',
'#title' => $this->t('Label'),
'#maxlength' => 255,
'#default_value' => $robot->label(),
'#required' => TRUE,
];
$form['id'] = [
'#type' => 'machine_name',
'#title' => $this->t('Machine name'),
'#default_value' => $robot->id(),
'#machine_name' => [
'exists' => [
$this,
'exists',
],
'replace_pattern' => '([^a-z0-9_]+)|(^custom$)',
'error' => 'The machine-readable name must be unique, and can only contain lowercase letters, numbers, and underscores. Additionally, it can not be the reserved word "custom".',
],
'#disabled' => !$robot->isNew(),
];
$form['floopy'] = [
'#type' => 'checkbox',
'#title' => $this->t('Floopy'),
'#default_value' => $robot->floopy,
];
// Return the form.
return $form;
}
/**
* Checks for an existing robot.
*
* @param string|int $entity_id
* The entity ID.
* @param array $element
* The form element.
* @param \Drupal\Core\Form\FormStateInterface $form_state
* The form state.
*
* @return bool
* TRUE if this format already exists, FALSE otherwise.
*/
public function exists($entity_id, array $element, FormStateInterface $form_state) {
// Use the query factory to build a new robot entity query.
$query = $this->entityStorage
->getQuery();
// Query the entity ID to see if its in use.
$result = $query->condition('id', $element['#field_prefix'] . $entity_id)
->accessCheck()
->execute();
// We don't need to return the ID, only if it exists or not.
return (bool) $result;
}
/**
* Overrides Drupal\Core\Entity\EntityFormController::actions().
*
* To set the submit button text, we need to override actions().
*
* @param array $form
* An associative array containing the structure of the form.
* @param \Drupal\Core\Form\FormStateInterface $form_state
* An associative array containing the current state of the form.
*
* @return array
* An array of supported actions for the current entity form.
*/
protected function actions(array $form, FormStateInterface $form_state) {
// Get the basic actins from the base class.
$actions = parent::actions($form, $form_state);
// Change the submit button text.
$actions['submit']['#value'] = $this->t('Save');
// Return the result.
return $actions;
}
/**
* {@inheritdoc}
*/
public function validateForm(array &$form, FormStateInterface $form_state) {
parent::validateForm($form, $form_state);
// Add code here to validate your config entity's form elements.
// Nothing to do here.
}
/**
* Overrides Drupal\Core\Entity\EntityFormController::save().
*
* Saves the entity. This is called after submit() has built the entity from
* the form values. Do not override submit() as save() is the preferred
* method for entity form controllers.
*
* @param array $form
* An associative array containing the structure of the form.
* @param \Drupal\Core\Form\FormStateInterface $form_state
* An associative array containing the current state of the form.
*/
public function save(array $form, FormStateInterface $form_state) {
// EntityForm provides us with the entity we're working on.
$robot = $this->getEntity();
// Drupal already populated the form values in the entity object. Each
// form field was saved as a public variable in the entity class. PHP
// allows Drupal to do this even if the method is not defined ahead of
// time.
$status = $robot->save();
// Grab the URL of the new entity. We'll use it in the message.
$url = $robot->toUrl();
// Create an edit link.
$edit_link = Link::fromTextAndUrl($this->t('Edit'), $url)
->toString();
if ($status == SAVED_UPDATED) {
// If we edited an existing entity...
$this->messenger()
->addMessage($this->t('Robot %label has been updated.', [
'%label' => $robot->label(),
]));
$this->logger('contact')
->notice('Robot %label has been updated.', [
'%label' => $robot->label(),
'link' => $edit_link,
]);
}
else {
// If we created a new entity...
$this->messenger()
->addMessage($this->t('Robot %label has been added.', [
'%label' => $robot->label(),
]));
$this->logger('contact')
->notice('Robot %label has been added.', [
'%label' => $robot->label(),
'link' => $edit_link,
]);
}
// Redirect the user back to the listing route after the save operation.
$form_state->setRedirect('entity.robot.list');
}
}
Members
Title Sort descending | Modifiers | Object type | Summary | Overriden Title | Overrides |
---|---|---|---|---|---|
DependencySerializationTrait::$_entityStorages | protected | property | |||
DependencySerializationTrait::$_serviceIds | protected | property | |||
DependencySerializationTrait::__sleep | public | function | 1 | ||
DependencySerializationTrait::__wakeup | public | function | 2 | ||
EntityForm::$entity | protected | property | The entity being used by this form. | 11 | |
EntityForm::$entityTypeManager | protected | property | The entity type manager. | 3 | |
EntityForm::$moduleHandler | protected | property | The module handler service. | ||
EntityForm::$operation | protected | property | The name of the current operation. | ||
EntityForm::actionsElement | protected | function | Returns the action form element for the current entity form. | ||
EntityForm::afterBuild | public | function | Form element #after_build callback: Updates the entity with submitted data. | ||
EntityForm::buildEntity | public | function | Builds an updated entity object based upon the submitted form values. | Overrides EntityFormInterface::buildEntity | 3 |
EntityForm::copyFormValuesToEntity | protected | function | Copies top-level form values to entity properties. | 9 | |
EntityForm::form | public | function | Gets the actual form array to be built. | 36 | |
EntityForm::getBaseFormId | public | function | Returns a string identifying the base form. | Overrides BaseFormIdInterface::getBaseFormId | 6 |
EntityForm::getEntity | public | function | Gets the form entity. | Overrides EntityFormInterface::getEntity | |
EntityForm::getEntityFromRouteMatch | public | function | Determines which entity will be used by this form from a RouteMatch object. | Overrides EntityFormInterface::getEntityFromRouteMatch | 3 |
EntityForm::getFormId | public | function | Returns a unique string identifying the form. | Overrides FormInterface::getFormId | 12 |
EntityForm::getOperation | public | function | Gets the operation identifying the form. | Overrides EntityFormInterface::getOperation | |
EntityForm::init | protected | function | Initialize the form state and the entity before the first form build. | 3 | |
EntityForm::prepareEntity | protected | function | Prepares the entity object before the form is built first. | 3 | |
EntityForm::prepareInvokeAll | protected | function | Invokes the specified prepare hook variant. | ||
EntityForm::processForm | public | function | Process callback: assigns weights and hides extra fields. | ||
EntityForm::setEntity | public | function | Sets the form entity. | Overrides EntityFormInterface::setEntity | |
EntityForm::setEntityTypeManager | public | function | Sets the entity type manager for this form. | Overrides EntityFormInterface::setEntityTypeManager | |
EntityForm::setModuleHandler | public | function | Sets the module handler for this form. | Overrides EntityFormInterface::setModuleHandler | |
EntityForm::setOperation | public | function | Sets the operation for this form. | Overrides EntityFormInterface::setOperation | |
EntityForm::submitForm | public | function | This is the default entity object builder function. It is called before any other submit handler to build the new entity object to be used by the following submit handlers. At this point of the form workflow the entity is validated and the form stateā¦ |
Overrides FormInterface::submitForm | 20 |
FormBase::$configFactory | protected | property | The config factory. | 3 | |
FormBase::$requestStack | protected | property | The request stack. | 1 | |
FormBase::$routeMatch | protected | property | The route match. | ||
FormBase::config | protected | function | Retrieves a configuration object. | ||
FormBase::configFactory | protected | function | Gets the config factory for this form. | 3 | |
FormBase::container | private | function | Returns the service container. | ||
FormBase::currentUser | protected | function | Gets the current user. | ||
FormBase::getRequest | protected | function | Gets the request object. | ||
FormBase::getRouteMatch | protected | function | Gets the route match. | ||
FormBase::logger | protected | function | Gets the logger for a specific channel. | ||
FormBase::redirect | protected | function | Returns a redirect response object for the specified route. | ||
FormBase::resetConfigFactory | public | function | Resets the configuration factory. | ||
FormBase::setConfigFactory | public | function | Sets the config factory for this form. | ||
FormBase::setRequestStack | public | function | Sets the request stack object to use. | ||
LoggerChannelTrait::$loggerFactory | protected | property | The logger channel factory service. | ||
LoggerChannelTrait::getLogger | protected | function | Gets the logger for a specific channel. | ||
LoggerChannelTrait::setLoggerFactory | public | function | Injects the logger channel factory. | ||
MessengerTrait::$messenger | protected | property | The messenger. | 17 | |
MessengerTrait::messenger | public | function | Gets the messenger. | 17 | |
MessengerTrait::setMessenger | public | function | Sets the messenger. | ||
RedirectDestinationTrait::$redirectDestination | protected | property | The redirect destination service. | 1 | |
RedirectDestinationTrait::getDestinationArray | protected | function | Prepares a 'destination' URL query parameter for use with \Drupal\Core\Url. | ||
RedirectDestinationTrait::getRedirectDestination | protected | function | Returns the redirect destination service. | ||
RedirectDestinationTrait::setRedirectDestination | public | function | Sets the redirect destination service. | ||
RobotFormBase::$entityStorage | protected | property | An entity query factory for the robot entity type. | ||
RobotFormBase::actions | protected | function | Overrides Drupal\Core\Entity\EntityFormController::actions(). | Overrides EntityForm::actions | 2 |
RobotFormBase::buildForm | public | function | Overrides Drupal\Core\Entity\EntityFormController::form(). | Overrides EntityForm::buildForm | |
RobotFormBase::create | public static | function | Factory method for RobotFormBase. | Overrides FormBase::create | |
RobotFormBase::exists | public | function | Checks for an existing robot. | ||
RobotFormBase::save | public | function | Overrides Drupal\Core\Entity\EntityFormController::save(). | Overrides EntityForm::save | |
RobotFormBase::validateForm | public | function | Form validation handler. | Overrides FormBase::validateForm | |
RobotFormBase::__construct | public | function | Construct the RobotFormBase. | ||
StringTranslationTrait::$stringTranslation | protected | property | The string translation service. | 3 | |
StringTranslationTrait::formatPlural | protected | function | Formats a string containing a count of items. | ||
StringTranslationTrait::getNumberOfPlurals | protected | function | Returns the number of plurals supported by a given language. | ||
StringTranslationTrait::getStringTranslation | protected | function | Gets the string translation service. | ||
StringTranslationTrait::setStringTranslation | public | function | Sets the string translation service to use. | 2 | |
StringTranslationTrait::t | protected | function | Translates a string to the current language or to a given language. |