class BaseFieldFileFormatterBase

Same name in other branches
  1. 9 core/modules/file/src/Plugin/Field/FieldFormatter/BaseFieldFileFormatterBase.php \Drupal\file\Plugin\Field\FieldFormatter\BaseFieldFileFormatterBase
  2. 10 core/modules/file/src/Plugin/Field/FieldFormatter/BaseFieldFileFormatterBase.php \Drupal\file\Plugin\Field\FieldFormatter\BaseFieldFileFormatterBase
  3. 11.x core/modules/file/src/Plugin/Field/FieldFormatter/BaseFieldFileFormatterBase.php \Drupal\file\Plugin\Field\FieldFormatter\BaseFieldFileFormatterBase

Base class for file formatters, which allow to link to the file download URL.

Hierarchy

Expanded class hierarchy of BaseFieldFileFormatterBase

File

core/modules/file/src/Plugin/Field/FieldFormatter/BaseFieldFileFormatterBase.php, line 15

Namespace

Drupal\file\Plugin\Field\FieldFormatter
View source
abstract class BaseFieldFileFormatterBase extends FormatterBase {
    
    /**
     * {@inheritdoc}
     */
    public static function defaultSettings() {
        $settings['link_to_file'] = FALSE;
        return $settings;
    }
    
    /**
     * {@inheritdoc}
     */
    public function settingsForm(array $form, FormStateInterface $form_state) {
        $form = parent::settingsForm($form, $form_state);
        $form['link_to_file'] = [
            '#title' => $this->t('Link this field to the file download URL'),
            '#type' => 'checkbox',
            '#default_value' => $this->getSetting('link_to_file'),
        ];
        return $form;
    }
    
    /**
     * {@inheritdoc}
     */
    public function viewElements(FieldItemListInterface $items, $langcode) {
        $elements = [];
        $url = NULL;
        // Add support to link to the entity itself.
        if ($this->getSetting('link_to_file')) {
            // @todo Wrap in file_url_transform_relative(). This is currently
            // impossible. See below.
            $url = file_create_url($items->getEntity()->uri->value);
        }
        foreach ($items as $delta => $item) {
            $view_value = $this->viewValue($item);
            if ($url) {
                $elements[$delta] = [
                    '#type' => 'link',
                    '#title' => $view_value,
                    '#url' => Url::fromUri($url),
                    // @todo Remove the 'url.site' cache context by using a relative file
                    // URL (file_url_transform_relative()). This is currently impossible
                    // because #type => link requires a Url object, and Url objects do not
                    // support relative URLs: they require fully qualified URLs. Fix in
                    // https://www.drupal.org/node/2646744.
'#cache' => [
                        'contexts' => [
                            'url.site',
                        ],
                    ],
                ];
            }
            else {
                $elements[$delta] = is_array($view_value) ? $view_value : [
                    '#markup' => $view_value,
                ];
            }
        }
        return $elements;
    }
    
    /**
     * Generate the output appropriate for one field item.
     *
     * @param \Drupal\Core\Field\FieldItemInterface $item
     *   One field item.
     *
     * @return mixed
     *   The textual output generated.
     */
    protected abstract function viewValue(FieldItemInterface $item);
    
    /**
     * {@inheritdoc}
     */
    public static function isApplicable(FieldDefinitionInterface $field_definition) {
        return $field_definition->getTargetEntityTypeId() === 'file';
    }

}

Members

Title Sort descending Modifiers Object type Summary Overriden Title Overrides
BaseFieldFileFormatterBase::defaultSettings public static function Defines the default settings for this plugin. Overrides PluginSettingsBase::defaultSettings 4
BaseFieldFileFormatterBase::isApplicable public static function Returns if the formatter can be used for the provided field. Overrides FormatterBase::isApplicable 3
BaseFieldFileFormatterBase::settingsForm public function Returns a form to configure settings for the formatter. Overrides FormatterBase::settingsForm 4
BaseFieldFileFormatterBase::viewElements public function Builds a renderable array for a field value. Overrides FormatterInterface::viewElements
BaseFieldFileFormatterBase::viewValue abstract protected function Generate the output appropriate for one field item. 4
FormatterBase::$fieldDefinition protected property The field definition.
FormatterBase::$label protected property The label display setting.
FormatterBase::$settings protected property The formatter settings. Overrides PluginSettingsBase::$settings
FormatterBase::$viewMode protected property The view mode.
FormatterBase::create public static function Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create 11
FormatterBase::getFieldSetting protected function Returns the value of a field setting.
FormatterBase::getFieldSettings protected function Returns the array of field settings.
FormatterBase::prepareView public function Allows formatters to load information for field values being displayed. Overrides FormatterInterface::prepareView 2
FormatterBase::settingsSummary public function Returns a short summary for the current formatter settings. Overrides FormatterInterface::settingsSummary 22
FormatterBase::view public function Builds a renderable array for a fully themed field. Overrides FormatterInterface::view 1
FormatterBase::__construct public function Constructs a FormatterBase object. 11
PluginInspectionInterface::getPluginDefinition public function Gets the definition of the plugin implementation. 6
PluginInspectionInterface::getPluginId public function Gets the plugin_id of the plugin instance. 2
PluginSettingsBase::$defaultSettingsMerged protected property Whether default settings have been merged into the current $settings.
PluginSettingsBase::$thirdPartySettings protected property The plugin settings injected by third party modules.
PluginSettingsBase::calculateDependencies public function Calculates dependencies for the configured plugin. Overrides DependentPluginInterface::calculateDependencies 6
PluginSettingsBase::getSetting public function Returns the value of a setting, or its default value if absent. Overrides PluginSettingsInterface::getSetting
PluginSettingsBase::getSettings public function Returns the array of settings, including defaults for missing settings. Overrides PluginSettingsInterface::getSettings
PluginSettingsBase::getThirdPartyProviders public function Gets the list of third parties that store information. Overrides ThirdPartySettingsInterface::getThirdPartyProviders
PluginSettingsBase::getThirdPartySetting public function Gets the value of a third-party setting. Overrides ThirdPartySettingsInterface::getThirdPartySetting
PluginSettingsBase::getThirdPartySettings public function Gets all third-party settings of a given module. Overrides ThirdPartySettingsInterface::getThirdPartySettings
PluginSettingsBase::mergeDefaults protected function Merges default settings values into $settings.
PluginSettingsBase::onDependencyRemoval public function Informs the plugin that some configuration it depends on will be deleted. Overrides PluginSettingsInterface::onDependencyRemoval 3
PluginSettingsBase::setSetting public function Sets the value of a setting for the plugin. Overrides PluginSettingsInterface::setSetting
PluginSettingsBase::setSettings public function Sets the settings for the plugin. Overrides PluginSettingsInterface::setSettings
PluginSettingsBase::setThirdPartySetting public function Sets the value of a third-party setting. Overrides ThirdPartySettingsInterface::setThirdPartySetting
PluginSettingsBase::unsetThirdPartySetting public function Unsets a third-party setting. Overrides ThirdPartySettingsInterface::unsetThirdPartySetting

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