我在Drupal 8中遇到了FORM的麻烦,想法是:
从无线电台中选择一个无线电值来给无线电台充电,但是,在回调之后,我看到的结果为空,但是在我使用的replace命令中,我看到的是正确的
这是buildForm的代码
public function buildForm(array $form, \Drupal\Core\Form\FormStateInterface $form_state){
$arrRadioContaminantes = array();
$arrRadioContaminantes["0"] = t("ALL");
//My function to access DB
$result = \Drupal\map_data\Controller\Contaminante::list();
foreach ($result as $it){
$arrRadioContaminantes[$it["id_contaminante"]] = t($it["description"]);
}
$form['radio_contaminantes'] = array(
'#type' => 'radios',
'#options' => $arrRadioContaminantes,
'#ajax' => [
'callback' => '::seleccionContaminantes',
'disable-refocus' => true,
'event' => 'change',
'wrapper' => 'radios-estaciones',
'method' => 'replace'
]
);
$form['radio_estaciones'] = array(
'#type' => 'radios',
'#id' => 'radios-estaciones',
'#options' => ['-1'=>t("SELECT CONTAMINANTE FIRST")]
);
$form['actions']['#type'] = 'actions';
$form['actions']['submit'] = array(
'#type' => 'submit',
'#value' => $this->t('Submit'),
'#button_type' => 'primary',
);
$form_state->setCached(false);
$form_state->setRebuild(true);
return $form;
}
这是回调函数:
public function seleccionContaminantes(array &$form, FormStateInterface $form_state){
if($form_state->getValue("radio_contaminantes") != 0){
$form['radio_estaciones']["0"] = t("All");
}
//My Database function
$resultado = \Drupal\montar_mapa\Controller\Estacion::list($form_state->getValue("radio_contaminantes"));
foreach ($resultado as $it){
$form['radio_estaciones'][$it["id"]] = t($it["name"]);
}
$ajaxResp = new AjaxResponse();
$ajaxResp->addCommand(new \Drupal\Core\Ajax\ReplaceCommand('radios-estaciones', \Drupal::service('renderer')->render($form['radio_estaciones'])));
return $ajaxResp;
}
我尝试返回具有相同结果的$ form ['radio_estaciones'],然后尝试DataCommand粘贴新值,相同结果...我需要帮助
答案 0 :(得分:0)