/** * Special handling to create form elements for multiple values. * * Handles generic features for multiple fields: * - number of widgets * - AHAH-'add more' button * - table display and drag-n-drop value reordering */ protected function formMultipleElements(FieldItemListInterface $items, array &$form, FormStateInterface $form_state) { $field_name = $this->fieldDefinition->getName(); $cardinality = $this->fieldDefinition->getFieldStorageDefinition()->getCardinality(); $parents = $form['#parents']; // Determine the number of widgets to display. switch ($cardinality) { case FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED: $field_state = static::getWidgetState($parents, $field_name, $form_state); $max = $field_state['items_count']; $is_multiple = TRUE; break; default: $max = $cardinality - 1; $is_multiple = $cardinality > 1; break; } $title = $this->fieldDefinition->getLabel(); $description = FieldFilteredMarkup::create(\Drupal::token()->replace($this->fieldDefinition->getDescription())); $elements = array(); for ($delta = 0; $delta <= $max; $delta++) { // Add a new empty item if it doesn't exist yet at this delta. if (!isset($items[$delta])) { $items->appendItem(); } // For multiple fields, title and description are handled by the wrapping // table. if ($is_multiple) { $element = ['#title' => $this->t('@title (value @number)', ['@title' => $title, '@number' => $delta + 1]), '#title_display' => 'invisible', '#description' => '']; } else { $element = ['#title' => $title, '#title_display' => 'before', '#description' => $description]; } $element = $this->formSingleElement($items, $delta, $element, $form, $form_state); if ($element) { // Input field for the delta (drag-n-drop reordering). if ($is_multiple) { // We name the element '_weight' to avoid clashing with elements // defined by widget. $element['_weight'] = array('#type' => 'weight', '#title' => $this->t('Weight for row @number', array('@number' => $delta + 1)), '#title_display' => 'invisible', '#delta' => $max, '#default_value' => $items[$delta]->_weight ?: $delta, '#weight' => 100); } $elements[$delta] = $element; } } if ($elements) { $elements += array('#theme' => 'field_multiple_value_form', '#field_name' => $field_name, '#cardinality' => $cardinality, '#cardinality_multiple' => $this->fieldDefinition->getFieldStorageDefinition()->isMultiple(), '#required' => $this->fieldDefinition->isRequired(), '#title' => $title, '#description' => $description, '#max_delta' => $max); // Add 'add more' button, if not working with a programmed form. if ($cardinality == FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED && !$form_state->isProgrammed()) { $id_prefix = implode('-', array_merge($parents, array($field_name))); $wrapper_id = Html::getUniqueId($id_prefix . '-add-more-wrapper'); $elements['#prefix'] = '<div id="' . $wrapper_id . '">'; $elements['#suffix'] = '</div>'; $elements['add_more'] = array('#type' => 'submit', '#name' => strtr($id_prefix, '-', '_') . '_add_more', '#value' => t('Add another item'), '#attributes' => array('class' => array('field-add-more-submit')), '#limit_validation_errors' => array(array_merge($parents, array($field_name))), '#submit' => array(array(get_class($this), 'addMoreSubmit')), '#ajax' => array('callback' => array(get_class($this), 'addMoreAjax'), 'wrapper' => $wrapper_id, 'effect' => 'fade')); } } return $elements; }
public function formMultipleElements(FieldItemListInterface $items, array &$form, FormStateInterface $form_state) { $field_name = $this->fieldDefinition->getName(); $cardinality = $this->fieldDefinition->getFieldStorageDefinition()->getCardinality(); $parents = $form['#parents']; $field_state = static::getWidgetState($parents, $field_name, $form_state); $max = $field_state['items_count']; $real_item_count = $max; $is_multiple = $this->fieldDefinition->getFieldStorageDefinition()->isMultiple(); $title = $this->fieldDefinition->getLabel(); $description = FieldFilteredMarkup::create(\Drupal::token()->replace($this->fieldDefinition->getDescription())); $elements = array(); $id_prefix = implode('-', array_merge($parents, array($field_name))); $wrapper_id = Html::getUniqueId($id_prefix . '-add-more-wrapper'); $elements['#prefix'] = '<div id="' . $wrapper_id . '">'; $elements['#suffix'] = '</div>'; $field_state['ajax_wrapper_id'] = $wrapper_id; static::setWidgetState($parents, $field_name, $form_state, $field_state); if ($max > 0) { for ($delta = 0; $delta < $max; $delta++) { // Add a new empty item if it doesn't exist yet at this delta. if (!isset($items[$delta])) { $items->appendItem(); } // For multiple fields, title and description are handled by the wrapping // table. $element = array('#title' => $is_multiple ? '' : $title, '#description' => $is_multiple ? '' : $description); $element = $this->formSingleElement($items, $delta, $element, $form, $form_state); if ($element) { // Input field for the delta (drag-n-drop reordering). if ($is_multiple) { // We name the element '_weight' to avoid clashing with elements // defined by widget. $element['_weight'] = array('#type' => 'weight', '#title' => t('Weight for row @number', array('@number' => $delta + 1)), '#title_display' => 'invisible', '#delta' => $max, '#default_value' => $items[$delta]->_weight ?: $delta, '#weight' => 100); } if (isset($element['#access']) && !$element['#access']) { $real_item_count--; } else { $elements[$delta] = $element; } } } } $field_state = static::getWidgetState($parents, $field_name, $form_state); $field_state['real_item_count'] = $real_item_count; static::setWidgetState($parents, $field_name, $form_state, $field_state); $entity_manager = \Drupal::entityManager(); $target_type = $this->getFieldSetting('target_type'); $bundles = $this->getAllowedTypes(); $access_control_handler = $entity_manager->getAccessControlHandler($target_type); $options = array(); $access_options = array(); $dragdrop_settings = $this->getSelectionHandlerSetting('target_bundles_drag_drop'); foreach ($bundles as $machine_name => $bundle) { if ($dragdrop_settings || (!count($this->getSelectionHandlerSetting('target_bundles')) || in_array($machine_name, $this->getSelectionHandlerSetting('target_bundles')))) { $options[$machine_name] = $bundle['label']; if ($access_control_handler->createAccess($machine_name)) { $access_options[$machine_name] = $bundle['label']; } } } if ($real_item_count > 0) { $elements += array('#theme' => 'field_multiple_value_form', '#field_name' => $field_name, '#cardinality' => $cardinality, '#cardinality_multiple' => $is_multiple, '#required' => $this->fieldDefinition->isRequired(), '#title' => $title, '#description' => $description, '#max_delta' => $max - 1); } else { // @todo: properize this. $add_text = 'No @title_multiple have been added yet. Select a @title type and press the button below to add one.'; $element_text = '<label>' . $title . "</label>"; $element_text .= '<p><em>' . t($add_text, array('@title_multiple' => $this->getSetting('title_plural'), '@title' => $this->getSetting('title'))) . '</em></p>'; $element_text .= $description ? '<div class="description">' . $description . '</div>' : ''; $elements += array('#type' => 'container', '#theme_wrappers' => array('container'), '#field_name' => $field_name, '#cardinality' => $cardinality, '#cardinality_multiple' => TRUE, '#max_delta' => $max - 1, 'text' => array('#markup' => $element_text)); } // Add 'add more' button, if not working with a programmed form. if (($real_item_count < $cardinality || $cardinality == FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED) && !$form_state->isProgrammed()) { // Hide the button when translating. $add_more_access = $this->getCurrentLangcode($form_state, $items) == $items->getEntity()->getUntranslated()->language()->getId(); $elements['add_more'] = array('#type' => 'container', '#theme_wrappers' => array('paragraphs_dropbutton_wrapper'), '#access' => $add_more_access); if (count($access_options)) { if ($this->getSetting('add_mode') == 'button' || $this->getSetting('add_mode') == 'dropdown' && count($access_options) === 1) { foreach ($access_options as $machine_name => $label) { $elements['add_more']['add_more_button_' . $machine_name] = array('#type' => 'submit', '#name' => strtr($id_prefix, '-', '_') . '_' . $machine_name . '_add_more', '#value' => t('Add @type', array('@type' => $label)), '#attributes' => array('class' => array('field-add-more-submit')), '#limit_validation_errors' => array(array_merge($parents, array($field_name, 'add_more'))), '#submit' => array(array(get_class($this), 'addMoreSubmit')), '#ajax' => array('callback' => array(get_class($this), 'addMoreAjax'), 'wrapper' => $wrapper_id, 'effect' => 'fade'), '#bundle_machine_name' => $machine_name); } } elseif ($this->getSetting('add_mode') == 'dropdown') { foreach ($access_options as $machine_name => $label) { $elements['add_more']['add_more_button_' . $machine_name] = array('#type' => 'submit', '#name' => strtr($id_prefix, '-', '_') . '_' . $machine_name . '_add_more', '#value' => t('Add @type', array('@type' => $label)), '#attributes' => array('class' => array('field-add-more-submit')), '#limit_validation_errors' => array(array_merge($parents, array($field_name, 'add_more'))), '#submit' => array(array(get_class($this), 'addMoreSubmit')), '#ajax' => array('callback' => array(get_class($this), 'addMoreAjax'), 'wrapper' => $wrapper_id, 'effect' => 'fade'), '#bundle_machine_name' => $machine_name, '#prefix' => '<li>', '#suffix' => '</li>'); } $elements['add_more']['#theme_wrappers'] = array('dropbutton_wrapper', 'paragraphs_dropbutton_wrapper'); $elements['add_more']['prefix'] = array('#markup' => '<ul class="dropbutton">', '#weight' => -999); $elements['add_more']['suffix'] = array('#markup' => '</ul>', '#weight' => 999); } else { $elements['add_more']['add_more_select'] = array('#type' => 'select', '#options' => $options, '#title' => t('@title type', array('@title' => $this->getSetting('title'))), '#label_display' => 'hidden'); $text = t('Add @title', array('@title' => $this->getSetting('title'))); if ($real_item_count > 0) { $text = t('Add another @title', array('@title' => $this->getSetting('title'))); } $elements['add_more']['add_more_button'] = array('#type' => 'submit', '#name' => strtr($id_prefix, '-', '_') . '_add_more', '#value' => $text, '#attributes' => array('class' => array('field-add-more-submit')), '#limit_validation_errors' => array(array_merge($parents, array($field_name, 'add_more'))), '#submit' => array(array(get_class($this), 'addMoreSubmit')), '#ajax' => array('callback' => array(get_class($this), 'addMoreAjax'), 'wrapper' => $wrapper_id, 'effect' => 'fade')); } } else { if (count($options)) { $elements['add_more']['info'] = array('#type' => 'markup', '#markup' => '<em>' . t('You are not allowed to add any of the @title types.', array('@title' => $this->getSetting('title'))) . '</em>'); } else { $elements['add_more']['info'] = array('#type' => 'markup', '#markup' => '<em>' . t('You did not add any @title types yet.', array('@title' => $this->getSetting('title'))) . '</em>'); } } } $elements['#attached']['library'][] = 'paragraphs/drupal.paragraphs.admin'; return $elements; }