class InputRequired

Same name in other branches
  1. 9 core/modules/views/src/Plugin/views/exposed_form/InputRequired.php \Drupal\views\Plugin\views\exposed_form\InputRequired
  2. 8.9.x core/modules/views/src/Plugin/views/exposed_form/InputRequired.php \Drupal\views\Plugin\views\exposed_form\InputRequired
  3. 11.x core/modules/views/src/Plugin/views/exposed_form/InputRequired.php \Drupal\views\Plugin\views\exposed_form\InputRequired

Exposed form plugin that provides an exposed form with required input.

Hierarchy

Expanded class hierarchy of InputRequired

Related topics

File

core/modules/views/src/Plugin/views/exposed_form/InputRequired.php, line 15

Namespace

Drupal\views\Plugin\views\exposed_form
View source
class InputRequired extends ExposedFormPluginBase {
    protected function defineOptions() {
        $options = parent::defineOptions();
        $options['text_input_required'] = [
            'default' => $this->t('Select any filter and click on Apply to see results'),
        ];
        $options['text_input_required_format'] = [
            'default' => NULL,
        ];
        return $options;
    }
    public function buildOptionsForm(&$form, FormStateInterface $form_state) {
        parent::buildOptionsForm($form, $form_state);
        $form['text_input_required'] = [
            '#type' => 'text_format',
            '#title' => $this->t('Text on demand'),
            '#description' => $this->t('Text to display instead of results until the user selects and applies an exposed filter.'),
            '#default_value' => $this->options['text_input_required'],
            '#format' => $this->options['text_input_required_format'] ?? filter_default_format(),
            '#editor' => FALSE,
        ];
    }
    public function submitOptionsForm(&$form, FormStateInterface $form_state) {
        $exposed_form_options = $form_state->getValue('exposed_form_options');
        $form_state->setValue([
            'exposed_form_options',
            'text_input_required_format',
        ], $exposed_form_options['text_input_required']['format']);
        $form_state->setValue([
            'exposed_form_options',
            'text_input_required',
        ], $exposed_form_options['text_input_required']['value']);
        parent::submitOptionsForm($form, $form_state);
    }
    protected function exposedFilterApplied() {
        static $cache = NULL;
        if (!isset($cache)) {
            $view = $this->view;
            if (is_array($view->filter) && count($view->filter)) {
                foreach ($view->filter as $filter) {
                    if ($filter->isExposed()) {
                        $identifier = $filter->options['expose']['identifier'];
                        if (isset($view->getExposedInput()[$identifier])) {
                            $cache = TRUE;
                            return $cache;
                        }
                    }
                }
            }
            $cache = FALSE;
        }
        return $cache;
    }
    public function preRender($values) {
        // Display the "text on demand" if needed. This is a site builder-defined
        // text to display instead of results until the user selects and applies
        // an exposed filter.
        if (!$this->exposedFilterApplied()) {
            $options = [
                'id' => 'area',
                'table' => 'views',
                'field' => 'area',
                'label' => '',
                'relationship' => 'none',
                'group_type' => 'group',
                // We need to set the "Display even if view has no result" option to
                // TRUE as the input required exposed form plugin will always force an
                // empty result if no exposed filters are applied.
'empty' => TRUE,
                'content' => [
                    // @see \Drupal\views\Plugin\views\area\Text::render()
'value' => $this->options['text_input_required'],
                    'format' => $this->options['text_input_required_format'],
                ],
            ];
            $handler = Views::handlerManager('area')->getHandler($options);
            $handler->init($this->view, $this->displayHandler, $options);
            $this->displayHandler->handlers['empty'] = [
                'area' => $handler,
            ];
            // Override the existing empty result message (if applicable).
            $this->displayHandler
                ->setOption('empty', [
                'text' => $options,
            ]);
        }
    }
    public function query() {
        if (!$this->exposedFilterApplied()) {
            // We return with no query; this will force the empty text.
            $this->view->built = TRUE;
            $this->view->executed = TRUE;
            $this->view->result = [];
        }
        else {
            parent::query();
        }
    }

}

Members

Title Sort descending Deprecated Modifiers Object type Summary Overriden Title Overrides
DerivativeInspectionInterface::getBaseId public function Gets the base_plugin_id of the plugin instance. 1
DerivativeInspectionInterface::getDerivativeId public function Gets the derivative_id of the plugin instance. 1
ExposedFormPluginBase::$usesOptions protected property Overrides PluginBase::$usesOptions
ExposedFormPluginBase::exposedFormAlter public function Overrides ExposedFormPluginInterface::exposedFormAlter
ExposedFormPluginBase::exposedFormSubmit public function Overrides ExposedFormPluginInterface::exposedFormSubmit
ExposedFormPluginBase::exposedFormValidate public function Overrides ExposedFormPluginInterface::exposedFormValidate
ExposedFormPluginBase::getCacheContexts public function Overrides CacheableDependencyInterface::getCacheContexts
ExposedFormPluginBase::getCacheMaxAge public function Overrides CacheableDependencyInterface::getCacheMaxAge
ExposedFormPluginBase::getCacheTags public function Overrides CacheableDependencyInterface::getCacheTags
ExposedFormPluginBase::postExecute public function Overrides ExposedFormPluginInterface::postExecute
ExposedFormPluginBase::postRender public function Overrides ExposedFormPluginInterface::postRender
ExposedFormPluginBase::preExecute public function Overrides ExposedFormPluginInterface::preExecute
ExposedFormPluginBase::renderExposedForm public function Overrides ExposedFormPluginInterface::renderExposedForm
ExposedFormPluginBase::resetForm public function Resets all the states of the exposed form.
InputRequired::buildOptionsForm public function Overrides ExposedFormPluginBase::buildOptionsForm
InputRequired::defineOptions protected function Overrides ExposedFormPluginBase::defineOptions
InputRequired::exposedFilterApplied protected function
InputRequired::preRender public function Overrides ExposedFormPluginBase::preRender
InputRequired::query public function Overrides ExposedFormPluginBase::query
InputRequired::submitOptionsForm public function Overrides PluginBase::submitOptionsForm
PluginBase::$definition public property Plugins' definition.
PluginBase::$displayHandler public property The display object this plugin is for.
PluginBase::$options public property Options for this plugin will be held here.
PluginBase::$position public property The handler position.
PluginBase::$renderer protected property Stores the render API renderer. 3
PluginBase::$view public property The top object of a view. 1
PluginBase::calculateDependencies public function Overrides DependentPluginInterface::calculateDependencies 14
PluginBase::create public static function Overrides ContainerFactoryPluginInterface::create 60
PluginBase::destroy public function Overrides ViewsPluginInterface::destroy 2
PluginBase::doFilterByDefinedOptions protected function Do the work to filter out stored options depending on the defined options.
PluginBase::filterByDefinedOptions public function Overrides ViewsPluginInterface::filterByDefinedOptions
PluginBase::getAvailableGlobalTokens public function Overrides ViewsPluginInterface::getAvailableGlobalTokens
PluginBase::getProvider public function Overrides ViewsPluginInterface::getProvider
PluginBase::getRenderer protected function Returns the render API renderer. 1
PluginBase::globalTokenForm public function Overrides ViewsPluginInterface::globalTokenForm
PluginBase::globalTokenReplace public function Overrides ViewsPluginInterface::globalTokenReplace
PluginBase::INCLUDE_ENTITY constant Include entity row languages when listing languages.
PluginBase::INCLUDE_NEGOTIATED constant Include negotiated languages when listing languages.
PluginBase::init public function Overrides ViewsPluginInterface::init 6
PluginBase::listLanguages protected function Makes an array of languages, optionally including special languages.
PluginBase::pluginTitle public function Overrides ViewsPluginInterface::pluginTitle
PluginBase::preRenderAddFieldsetMarkup public static function Overrides ViewsPluginInterface::preRenderAddFieldsetMarkup
PluginBase::preRenderFlattenData public static function Overrides ViewsPluginInterface::preRenderFlattenData
PluginBase::queryLanguageSubstitutions public static function Returns substitutions for Views queries for languages.
PluginBase::setOptionDefaults protected function Fills up the options of the plugin with defaults.
PluginBase::summaryTitle public function Overrides ViewsPluginInterface::summaryTitle 6
PluginBase::themeFunctions public function Overrides ViewsPluginInterface::themeFunctions 1
PluginBase::trustedCallbacks public static function Overrides TrustedCallbackInterface::trustedCallbacks 6
PluginBase::unpackOptions public function Overrides ViewsPluginInterface::unpackOptions
PluginBase::usesOptions public function Overrides ViewsPluginInterface::usesOptions 8
PluginBase::validate public function Overrides ViewsPluginInterface::validate 6
PluginBase::validateOptionsForm public function Overrides ViewsPluginInterface::validateOptionsForm 15
PluginBase::viewsTokenReplace protected function Replaces Views' tokens in a given string. 1
PluginBase::VIEWS_QUERY_LANGUAGE_SITE_DEFAULT constant Query string to indicate the site default language.
PluginBase::__construct public function Constructs a PluginBase object. 19
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
TrustedCallbackInterface::THROW_EXCEPTION constant Untrusted callbacks throw exceptions.
TrustedCallbackInterface::TRIGGER_SILENCED_DEPRECATION constant Untrusted callbacks trigger silenced E_USER_DEPRECATION errors.
TrustedCallbackInterface::TRIGGER_WARNING Deprecated constant Untrusted callbacks trigger E_USER_WARNING errors.

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