public function TextWithTitleAccordionFormatter::viewElements in Text with Title Field 8

Define how the field type is displayed.

Inside this method we can customize how the field is displayed inside pages.

Overrides FormatterInterface::viewElements

1 call to TextWithTitleAccordionFormatter::viewElements()

TextWithTitleAccordionFormatter::view in src/Plugin/Field/FieldFormatter/TextWithTitleAccordionFormatter.php

Overide the view method so we can wrap the result in the accordion markup.

File

src/Plugin/Field/FieldFormatter/TextWithTitleAccordionFormatter.php, line 54

Class

TextWithTitleAccordionFormatter

Plugin implementation of the 'TextWithTitleAccordionFormatter' formatter.

Namespace

Drupal\text_with_title\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $elements = [];
  foreach ($items as $delta => $item) {

    // Generate a unique ID for this item.
    $id = $this->accordion_group_id . '--accordion-' . $delta;
    $description_attributes = [];

    // Body attributes.
    $body_attributes = [
      'id' => $id,
    ];

    // Heading attributes.
    $heading_attributes = [
      'data-toggle' => 'collapse',
    ];
    if ($this
      ->getSetting('only_one_open')) {

      // Parent id.
      $entity = $items
        ->getEntity();
      $parent_id = $entity
        ->getEntityTypeId() . '_' . $entity
        ->bundle() . '_' . $entity
        ->id();
      $heading_attributes['data-parent'] = '#' . $parent_id;
    }
    $attributes = [];
    $elements[$delta] = [
      '#theme' => 'text_with_title_panel',
      '#heading' => [
        '#plain_text' => $item->title,
      ],
      '#heading_attributes' => new Attribute($heading_attributes),
      '#collapsible' => TRUE,
      '#collapsed' => TRUE,
      '#attributes' => new Attribute($attributes),
      '#id' => $id,
      '#target' => '#' . $id,
      '#description' => [
        'attributes' => new Attribute($description_attributes),
        'content' => '',
        'position' => 'before',
      ],
      '#body' => [
        '#type' => 'processed_text',
        '#text' => $item->text['value'],
        '#format' => $item->text['format'],
        '#langcode' => $langcode,
      ],
      '#body_attributes' => new Attribute($body_attributes),
    ];
  }
  return $elements;
}