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| 1 | <?php |
| 2 | |
| 3 | namespace Drupal\primary_entity_reference\Plugin\Field\FieldWidget; |
| 4 | |
| 5 | use Drupal\Core\Field\Attribute\FieldWidget; |
| 6 | use Drupal\Core\Field\FieldItemListInterface; |
| 7 | use Drupal\Core\Form\FormStateInterface; |
| 8 | use Drupal\Core\StringTranslation\TranslatableMarkup; |
| 9 | use Drupal\Core\Field\Plugin\Field\FieldWidget\OptionsButtonsWidget; |
| 10 | |
| 11 | /** |
| 12 | * Plugin implementation of the 'options_buttons' widget. |
| 13 | */ |
| 14 | #[FieldWidget( |
| 15 | id: 'primary_entity_reference_options_buttons', |
| 16 | label: new TranslatableMarkup('Check boxes/radio buttons'), |
| 17 | field_types: [ |
| 18 | 'primary_entity_reference', |
| 19 | ], |
| 20 | multiple_values: TRUE, |
| 21 | )] |
| 22 | class PrimaryEntityReferenceOptionsButtonsWidget extends OptionsButtonsWidget { |
| 23 | |
| 24 | /** |
| 25 | * {@inheritdoc} |
| 26 | */ |
| 27 | public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) { |
| 28 | $el = parent::formElement($items, $delta, $element, $form, $form_state); |
| 29 | // Alter the checkboxes to include a radio per option. |
| 30 | $values = $items->getValue(); |
| 31 | $options = $this->getOptions($items->getEntity()); |
| 32 | $default_values = array_column($values, 'target_id'); |
| 33 | |
| 34 | $primary = $default_values[0] ?? NULL; |
| 35 | |
| 36 | $field_name = $this->fieldDefinition->getName(); |
| 37 | $elements['#type'] = 'container'; |
| 38 | $elements['#tree'] = TRUE; |
| 39 | |
| 40 | foreach ($options as $key => $label) { |
| 41 | $elements[$key] = [ |
| 42 | '#type' => 'container', |
| 43 | '#attributes' => ['class' => ['checkbox-radio-pair']], |
| 44 | 'primary' => [ |
| 45 | '#type' => 'radio', |
| 46 | '#title' => '', |
| 47 | '#return_value' => $key, |
| 48 | '#parents' => [$field_name, 0, 'primary'], |
| 49 | '#default_value' => ($key == $primary) ? $key : 0, |
| 50 | '#attributes' => [ |
| 51 | 'style' => 'margin-right: 35px;', |
| 52 | ], |
| 53 | ], |
| 54 | 'target_id' => [ |
| 55 | '#type' => 'checkbox', |
| 56 | '#title' => $label, |
| 57 | "#key_column" => "target_id", |
| 58 | '#return_value' => $key, |
| 59 | '#default_value' => in_array($key, $default_values) ? $key : 0, |
| 60 | ], |
| 61 | |
| 62 | ]; |
| 63 | } |
| 64 | |
| 65 | return $elements; |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * {@inheritdoc} |
| 70 | */ |
| 71 | public function massageFormValues(array $values, array $form, FormStateInterface $form_state) { |
| 72 | $values = parent::massageFormValues($values, $form, $form_state); |
| 73 | $primary = 0; |
| 74 | foreach ($values as $delta => $value) { |
| 75 | if (isset($value['primary']) && $value['primary']) { |
| 76 | $primary = (int) $value['primary']; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | $vals = []; |
| 81 | $i = 0; |
| 82 | foreach ($values as $value) { |
| 83 | if (isset($value['primary']) && $value['primary']) { |
| 84 | continue; |
| 85 | } |
| 86 | $vals[$i]['target_id'] = $value['target_id']; |
| 87 | $vals[$i]['primary'] = 0; |
| 88 | if ($value['target_id'] == $primary) { |
| 89 | $vals[$i]['primary'] = 1; |
| 90 | } |
| 91 | |
| 92 | $i += 1; |
| 93 | } |
| 94 | |
| 95 | return $vals; |
| 96 | } |
| 97 | |
| 98 | } |