Issue #2813405: Add a field to view and edit content groups (patch #91)

entity_field_label:

  user: 'Group Memberships'

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.js .field--widget-group-selector-widget .dropbutton-wrapper {

  display: inline-flex;

  padding-right: 0em;

  margin-right: 0em;

  /* Override 600px breakpoint from core. */

  width: auto;

}

.js .field--widget-group-selector-widget .dropbutton-widget {

  position: relative;

}

.js .field--widget-group-selector-widget .field-multiple-table {

  margin-bottom: 10px;

}

.js .field--widget-group-selector-widget td {

  padding: 10px 0px 10px 0px;

}

.js .field--widget-group-selector-widget .field-multiple-drag {

  vertical-align: top;

}

.js .field--widget-group-selector-widget .draggable .tabledrag-handle {

  padding-right: 0;

  margin-left: 0;

}

.js .field--widget-group-selector-widget .tabledrag-handle .handle {

  margin-left: 0;

  margin-right: 0;

  padding-right: 0.2em;

}

.js .gcontent-type-top {

  display: flex;

  flex-wrap: nowrap;

  justify-content: space-between;

}

.js .gcontent-type-title {

  flex-basis: 25%;

  min-width: 80px;

  white-space: nowrap;

  text-overflow: ellipsis;

  overflow: hidden;

}

.js .field--widget-group-selector-widget .delta-order {

  padding-right: 10px;

  text-align: right;

}

.js .field--widget-group-selector-widget .dropbutton-action .ajax-progress {

  left: -115px;

}

name: 'Group Content Field'

description: 'Provide a new field which allows you to add group content from entity form'

package: 'Group'

type: 'module'

version: 1.0

core: '8.x'

dependencies:

  - 'group:group'

gcontent_field.admin:

  dependencies:

      - core/jquery

      - core/drupal

      - core/drupalSettings

      - core/jquery.once

      - core/jquery.form

      - core/drupal.ajax

      - core/drupal.dropbutton

  css:

    theme:

      css/gcontent-field.admin.css: {}

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<?php

/**

 * @file

 * Allows to add group content from entity form.

 */

use Drupal\Core\Entity\EntityTypeInterface;

use Drupal\Core\Field\BaseFieldDefinition;

use Drupal\Core\Field\FieldStorageDefinitionInterface;

/**

 * Implements hook_theme().

 */

function gcontent_field_theme() {

  return [

    'gc_field_dropbutton_wrapper' => [

      'variables' => ['children' => NULL],

    ],

  ];

}

/**

 * Implements hook_entity_base_field_info().

 */

function gcontent_field_entity_base_field_info(EntityTypeInterface $entity_type) {

  $fields = [];

  if ($entity_types = gcontent_field_get_entity_types()) {

    // Adding field to entity types.

    if (array_key_exists($entity_type->id(), $entity_types)) {

      $entity_field_label = \Drupal::config('gcontent_field.settings')->get('entity_field_label');

      $field_label = $entity_field_label[$entity_type->id()] ?? t('Groups');

      $fields['group_content'] = BaseFieldDefinition::create('entity_reference')

        ->setName('group_content')

        ->setTargetEntityTypeId($entity_type->id())

        ->setSetting('target_type', 'group_content')

        ->setLabel($field_label)

        ->setTranslatable(FALSE)

        ->setComputed(TRUE)

        ->setCustomStorage(TRUE)

        ->setCardinality(FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED)

        ->setClass('\Drupal\gcontent_field\Field\GcontentFieldItemList')

        ->setDisplayConfigurable('form', TRUE)

        ->setDisplayOptions('form', [

          'type' => 'hidden',

          'weight' => 50,

        ])

        ->setDisplayConfigurable('view', TRUE)

        ->setDisplayOptions('view', [

          'label' => 'hidden',

          'type' => 'hidden',

          'weight' => 50,

        ]);

    }

  }

  return $fields;

}

/**

 * Get entities where the field should be added.

 */

function gcontent_field_get_entity_types() {

  $entity_types = [];

  $plugin_manager = \Drupal::service('plugin.manager.group_content_enabler');

  foreach ($plugin_manager->getDefinitions() as $plugin_id => $plugin_definition) {

    // If entity already added to list just continue with next plugin.

    if (in_array($plugin_definition['entity_type_id'], $entity_types)) {

      continue;

    }

    $entity_type_definition = \Drupal::entityTypeManager()->getDefinition($plugin_definition['entity_type_id']);

    // Check if fields can be attached to the entity type.

    if ($entity_type_definition->get('field_ui_base_route')) {

      $entity_types[$plugin_definition['entity_type_id']] = (string) $entity_type_definition->getLabel();

    }

  }

  return $entity_types;

}