config('roblib_alter_solr.settings');
$solr_config = $this->config('search_api.index.default_solr_index');
$solr_fields = $solr_config->get('field_settings');
$fields_options = [];
foreach ($solr_fields as $name => $field) {
$fields_options[$name] = $field['label'];
}
// Use getStorage() to persist state across AJAX calls.
$pairs = $form_state->getStorage()['pairs'] ?? $form_state->get('pairs') ?? $config->get('pairs') ?? [];
$form_state->setStorage(['pairs' => $pairs]);
$form['open_modal'] = [
'#type' => 'markup',
'#markup' => '' . $this->t('How to use this form') . '',
'#prefix' => '',
'#suffix' => '
',
];
$form['pairs'] = [
'#type' => 'table',
'#header' => [
$this->t('Source'),
$this->t('Destination'),
$this->t('Operations'),
],
'#prefix' => '',
'#suffix' => '
',
];
$added = FALSE;
foreach ($pairs as $index => $pair) {
$form['pairs'][$index]['source'] = [
'#type' => 'select',
'#multiple' => TRUE,
'#options' => $fields_options,
'#default_value' => $pair['source'] ?? '',
];
$form['pairs'][$index]['destination'] = [
'#type' => 'textfield',
'#default_value' => $pair['destination'] ?? '',
];
if ($pair['source'] && $pair['destination']) {
$form['pairs'][$index]['remove'] = [
'#type' => 'submit',
'#value' => $this->t('Remove'),
'#submit' => ['::removeCallback'],
'#ajax' => [
'callback' => '::ajaxCallback',
'wrapper' => 'pairs-wrapper',
],
'#name' => 'remove_' . $index,
'#limit_validation_errors' => [],
];
}
else {
$form['pairs'][$index]['add'] = [
'#type' => 'submit',
'#value' => $this->t('Add Row'),
'#submit' => ['::addCallback'],
'#ajax' => [
'callback' => '::ajaxCallback',
'wrapper' => 'pairs-wrapper',
],
];
$form['pairs'][$index]['source']['#attributes'] = ['class' => ['source-field']];
$form['pairs'][$index]['destination']['#attributes'] = ['class' => ['destination-field']];
$added = TRUE;
}
}
if (!$added) {
$unique_id = uniqid();
$pairs[$unique_id] = ['source' => '', 'destination' => ''];
$form['pairs'][$unique_id]['source'] = [
'#type' => 'select',
'#multiple' => TRUE,
'#options' => $fields_options,
'#default_value' => '',
'#attributes' => ['class' => ['source-field']],
];
$form['pairs'][$unique_id]['destination'] = [
'#type' => 'textfield',
'#default_value' => '',
'#attributes' => ['class' => ['destination-field']],
];
$form['add'] = [
'#type' => 'submit',
'#value' => $this->t('Add Row'),
'#submit' => ['::addCallback'],
'#ajax' => [
'callback' => '::ajaxCallback',
'wrapper' => 'pairs-wrapper',
],
];
}
$form['#attached']['library'][] = 'roblib_alter_solr/roblib_alter_solr';
return parent::buildForm($form, $form_state);
}
/**
* Callback function to add a new row.
*/
public function addCallback(array &$form, FormStateInterface $form_state) {
$user_input = $form_state->getUserInput();
$unique_id = uniqid();
$pairs = $user_input['pairs'] ?? [];
$pairs[$unique_id] = ['source' => '', 'destination' => ''];
$form_state->set('pairs', $pairs);
$form_state->setRebuild();
}
/**
* Callback function to remove a row.
*/
public function removeCallback(array &$form, FormStateInterface $form_state) {
$trigger = $form_state->getTriggeringElement();
$index = str_replace('remove_', '', $trigger['#name']);
$pairs = $form_state->get('pairs') ?? [];
if (isset($pairs[$index])) {
unset($pairs[$index]);
$form_state->set('pairs', $pairs);
}
$form_state->setRebuild();
}
/**
* AJAX callback to update the form.
*/
public function ajaxCallback(array &$form, FormStateInterface $form_state) {
return $form['pairs'];
}
/**
* {@inheritdoc}
*/
public function submitForm(array &$form, FormStateInterface $form_state) {
$pairs = $form_state->getValue('pairs');
$config = $this->config('roblib_alter_solr.settings');
$config->set('pairs', $pairs)->save();
$this->messenger()->addStatus($this->t('Configuration saved successfully.'));
}
}