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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Drupal\primary_entity_reference\Plugin\Field\FieldWidget; |
| 6 | |
| 7 | use Drupal\Core\Field\FieldItemListInterface; |
| 8 | use Drupal\Core\Form\FormStateInterface; |
| 9 | use Drupal\Core\Field\Attribute\FieldWidget; |
| 10 | use Drupal\Core\StringTranslation\TranslatableMarkup; |
| 11 | |
| 12 | // Only define this widget if Inline Entity Form is installed. |
| 13 | if (!class_exists('Drupal\inline_entity_form\Plugin\Field\FieldWidget\InlineEntityFormComplex')) { |
| 14 | return; |
| 15 | } |
| 16 | |
| 17 | use Drupal\inline_entity_form\Plugin\Field\FieldWidget\InlineEntityFormComplex; |
| 18 | |
| 19 | /** |
| 20 | * Plugin implementation of the 'primary_entity_reference_inline_form' widget. |
| 21 | * |
| 22 | * This widget requires the Inline Entity Form module to be installed. |
| 23 | */ |
| 24 | #[FieldWidget( |
| 25 | id: 'primary_entity_reference_inline_form', |
| 26 | label: new TranslatableMarkup('Inline entity form - Primary'), |
| 27 | description: new TranslatableMarkup('An inline entity form widget with primary selection.'), |
| 28 | field_types: ['primary_entity_reference'], |
| 29 | multiple_values: TRUE, |
| 30 | )] |
| 31 | class PrimaryEntityReferenceInlineFormWidget extends InlineEntityFormComplex { |
| 32 | |
| 33 | /** |
| 34 | * {@inheritdoc} |
| 35 | */ |
| 36 | public static function defaultSettings() { |
| 37 | $defaults = parent::defaultSettings(); |
| 38 | $defaults += [ |
| 39 | 'primary_label' => 'Primary', |
| 40 | ]; |
| 41 | |
| 42 | return $defaults; |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * {@inheritdoc} |
| 47 | */ |
| 48 | public function settingsForm(array $form, FormStateInterface $form_state) { |
| 49 | $element = parent::settingsForm($form, $form_state); |
| 50 | |
| 51 | $element['primary_selection_settings'] = [ |
| 52 | '#type' => 'details', |
| 53 | '#title' => $this->t('Primary selection settings'), |
| 54 | '#open' => TRUE, |
| 55 | '#weight' => 10, |
| 56 | ]; |
| 57 | |
| 58 | $element['primary_selection_settings']['primary_label'] = [ |
| 59 | '#type' => 'textfield', |
| 60 | '#title' => $this->t('Primary label'), |
| 61 | '#description' => $this->t('The label to display for the primary selection.'), |
| 62 | '#default_value' => $this->getSetting('primary_label'), |
| 63 | '#required' => TRUE, |
| 64 | ]; |
| 65 | |
| 66 | return $element; |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * {@inheritdoc} |
| 71 | */ |
| 72 | public function settingsSummary() { |
| 73 | $summary = parent::settingsSummary(); |
| 74 | |
| 75 | $summary[] = $this->t('Primary selection is required.'); |
| 76 | |
| 77 | $primary_label = $this->getSetting('primary_label'); |
| 78 | $summary[] = $this->t('Primary label: @label', ['@label' => $primary_label]); |
| 79 | |
| 80 | return $summary; |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * {@inheritdoc} |
| 85 | */ |
| 86 | public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) { |
| 87 | // Get the parent form element. |
| 88 | $element = parent::formElement($items, $delta, $element, $form, $form_state); |
| 89 | |
| 90 | // Add the primary selection library. |
| 91 | $element['#attached']['library'][] = 'primary_entity_reference/primary_selection'; |
| 92 | |
| 93 | // Add a wrapper class for styling. |
| 94 | $class = 'primary-entity-reference-inline-form'; |
| 95 | $element['#attributes']['class'][] = $class; |
| 96 | |
| 97 | // Get the IEF ID from the element (set by parent). |
| 98 | $ief_id = $element['#ief_id'] ?? NULL; |
| 99 | |
| 100 | if (!$ief_id) { |
| 101 | return $element; |
| 102 | } |
| 103 | |
| 104 | // Get the IEF widget state to check for entities. |
| 105 | $widget_state = $form_state->get(['inline_entity_form', $ief_id]); |
| 106 | $entities = $widget_state['entities'] ?? []; |
| 107 | |
| 108 | // Add primary column to table fields. |
| 109 | $primary_label = $this->getSetting('primary_label'); |
| 110 | if (!isset($element['entities']['#table_fields']['primary'])) { |
| 111 | $element['entities']['#table_fields'] = [ |
| 112 | 'primary' => [ |
| 113 | 'type' => 'callback', |
| 114 | 'label' => $primary_label, |
| 115 | 'weight' => -100, |
| 116 | 'callback' => [get_class($this), 'renderPrimaryField'], |
| 117 | ], |
| 118 | ] + ($element['entities']['#table_fields'] ?? []); |
| 119 | } |
| 120 | |
| 121 | // Determine the current primary selection. |
| 122 | $current_primary = NULL; |
| 123 | foreach ($items as $item_delta => $item) { |
| 124 | if ($item->get('primary')->getValue()) { |
| 125 | $current_primary = $item_delta; |
| 126 | break; |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | // If no primary is set and we have entities, default to the first one. |
| 131 | if ($current_primary === NULL && !empty($entities)) { |
| 132 | $current_primary = 0; |
| 133 | } |
| 134 | |
| 135 | $field_name = $this->fieldDefinition->getName(); |
| 136 | |
| 137 | // Add primary radio to each entity row. |
| 138 | foreach ($entities as $key => $value) { |
| 139 | if (!isset($element['entities'][$key])) { |
| 140 | continue; |
| 141 | } |
| 142 | |
| 143 | // Add primary radio button for this row. |
| 144 | $element['entities'][$key]['primary'] = [ |
| 145 | '#type' => 'radio', |
| 146 | '#title' => $this->t('Primary'), |
| 147 | '#title_display' => 'invisible', |
| 148 | '#return_value' => $key, |
| 149 | '#default_value' => ($current_primary == $key) ? $key : NULL, |
| 150 | '#parents' => [$field_name, 'primary'], |
| 151 | '#required' => FALSE, |
| 152 | '#attributes' => [ |
| 153 | 'class' => ['primary-radio'], |
| 154 | ], |
| 155 | ]; |
| 156 | } |
| 157 | |
| 158 | // Add validation. |
| 159 | if (!empty($entities)) { |
| 160 | $element['#element_validate'][] = [get_class($this), 'validatePrimarySelection']; |
| 161 | } |
| 162 | |
| 163 | return $element; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * Renders the primary radio button for a table cell. |
| 168 | * |
| 169 | * This callback is used by the IEF table rendering to display custom columns. |
| 170 | * |
| 171 | * @param \Drupal\Core\Entity\EntityInterface $entity |
| 172 | * The entity being rendered in this row. |
| 173 | * @param array $variables |
| 174 | * The template variables including the form array. |
| 175 | * |
| 176 | * @return array |
| 177 | * A render array for the primary radio button. |
| 178 | */ |
| 179 | public static function renderPrimaryField($entity, array $variables) { |
| 180 | $form = $variables['form']; |
| 181 | |
| 182 | // Find the delta (key) for this entity in the form. |
| 183 | foreach ($form as $key => $item) { |
| 184 | if (is_array($item) && isset($item['#entity']) && $item['#entity'] === $entity) { |
| 185 | // Return the radio button if it exists. |
| 186 | if (isset($form[$key]['primary'])) { |
| 187 | return $form[$key]['primary']; |
| 188 | } |
| 189 | break; |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | // Fallback if radio not found. |
| 194 | return ['#markup' => '']; |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Builds options for the primary selection radios. |
| 199 | * |
| 200 | * @param \Drupal\Core\Field\FieldItemListInterface $items |
| 201 | * The field items. |
| 202 | * @param array $entities |
| 203 | * The entities array from the widget state. |
| 204 | * |
| 205 | * @return array |
| 206 | * An array of options for the radios. |
| 207 | */ |
| 208 | public function buildPrimaryOptions(FieldItemListInterface $items, array $entities = []) { |
| 209 | $options = []; |
| 210 | |
| 211 | // If we have entities in the widget state, use those. |
| 212 | if (!empty($entities)) { |
| 213 | foreach ($entities as $delta => $value) { |
| 214 | $entity = $value['entity']; |
| 215 | $label = $entity->label() ?: $this->t('Item @number', ['@number' => $delta + 1]); |
| 216 | $options[$delta] = $label; |
| 217 | } |
| 218 | } |
| 219 | else { |
| 220 | // Fallback: build options from field values. |
| 221 | $values = $items->getValue(); |
| 222 | if (empty($values)) { |
| 223 | $options[0] = $this->t('First item'); |
| 224 | return $options; |
| 225 | } |
| 226 | |
| 227 | $target_type = $this->getTargetEntityType(); |
| 228 | $storage = $this->entityTypeManager->getStorage($target_type); |
| 229 | |
| 230 | foreach ($values as $delta => $value) { |
| 231 | if (isset($value['target_id'])) { |
| 232 | $entity = $storage->load($value['target_id']); |
| 233 | if ($entity) { |
| 234 | $options[$delta] = $entity->label(); |
| 235 | } |
| 236 | else { |
| 237 | $options[$delta] = $this->t('Item @number', ['@number' => $delta + 1]); |
| 238 | } |
| 239 | } |
| 240 | else { |
| 241 | $options[$delta] = $this->t('Item @number', ['@number' => $delta + 1]); |
| 242 | } |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | return $options; |
| 247 | } |
| 248 | |
| 249 | /** |
| 250 | * Validates the primary selection. |
| 251 | * |
| 252 | * @param array $element |
| 253 | * The form element. |
| 254 | * @param \Drupal\Core\Form\FormStateInterface $form_state |
| 255 | * The form state. |
| 256 | * @param array $form |
| 257 | * The complete form. |
| 258 | */ |
| 259 | public static function validatePrimarySelection(array $element, FormStateInterface $form_state, array $form) { |
| 260 | // Get the widget value. |
| 261 | $value = $form_state->getValue($element['#parents']); |
| 262 | |
| 263 | // Check if primary is selected. |
| 264 | $primary = $value['primary'] ?? NULL; |
| 265 | |
| 266 | if ($primary === NULL || $primary === '') { |
| 267 | $form_state->setError($element, t('Please select a primary item.')); |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | /** |
| 272 | * {@inheritdoc} |
| 273 | */ |
| 274 | public function massageFormValues(array $values, array $form, FormStateInterface $form_state) { |
| 275 | // Get the field name and retrieve the primary selection. |
| 276 | $field_name = $this->fieldDefinition->getName(); |
| 277 | $field_parents = $form['#parents'] ?? []; |
| 278 | $parents = array_merge($field_parents, [$field_name, 'primary']); |
| 279 | |
| 280 | $primary_delta = $form_state->getValue($parents); |
| 281 | |
| 282 | // Let the parent massage the values first. |
| 283 | $values = parent::massageFormValues($values, $form, $form_state); |
| 284 | |
| 285 | // Reset all primary flags to 0. |
| 286 | foreach ($values as $delta => $value) { |
| 287 | $values[$delta]['primary'] = 0; |
| 288 | } |
| 289 | |
| 290 | // Set the selected primary. |
| 291 | if ($primary_delta !== NULL && isset($values[$primary_delta])) { |
| 292 | $values[$primary_delta]['primary'] = 1; |
| 293 | } |
| 294 | |
| 295 | return $values; |
| 296 | } |
| 297 | |
| 298 | /** |
| 299 | * {@inheritdoc} |
| 300 | */ |
| 301 | public function extractFormValues(FieldItemListInterface $items, array $form, FormStateInterface $form_state) { |
| 302 | parent::extractFormValues($items, $form, $form_state); |
| 303 | |
| 304 | // Get the field name and retrieve the primary selection. |
| 305 | $field_name = $this->fieldDefinition->getName(); |
| 306 | $field_parents = $form['#parents'] ?? []; |
| 307 | $parents = array_merge($field_parents, [$field_name, 'primary']); |
| 308 | |
| 309 | $primary_delta = $form_state->getValue($parents); |
| 310 | |
| 311 | // Update the primary flag on the field items. |
| 312 | if ($primary_delta !== NULL) { |
| 313 | foreach ($items as $delta => $item) { |
| 314 | $item->set('primary', $delta == $primary_delta ? 1 : 0); |
| 315 | } |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | /** |
| 320 | * Gets the target entity type ID. |
| 321 | * |
| 322 | * @return string |
| 323 | * The target entity type ID. |
| 324 | */ |
| 325 | public function getTargetEntityType(): string { |
| 326 | return $this->fieldDefinition->getSetting('target_type'); |
| 327 | } |
| 328 | |
| 329 | /** |
| 330 | * Gets the target entity type label. |
| 331 | * |
| 332 | * @return string|\Drupal\Core\StringTranslation\TranslatableMarkup |
| 333 | * The target entity type label. |
| 334 | */ |
| 335 | public function getTargetEntityTypeLabel() { |
| 336 | $entity_type = $this->entityTypeManager->getDefinition($this->getTargetEntityType()); |
| 337 | return $entity_type->getLabel(); |
| 338 | } |
| 339 | |
| 340 | } |