label' pairs, i.e. 'US States': IL => Illinois, IA => Iowa, IN => Indiana."),
* category = @Translation("Text"),
* default_widget = "options_select",
* default_formatter = "list_default",
* )
*/
class ListStringItem extends ListItemBase {
/**
* {@inheritdoc}
*/
public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
$properties['value'] = DataDefinition::create('string')
->setLabel(t('Text value'))
->addConstraint('Length', ['max' => 255])
->setRequired(TRUE);
return $properties;
}
/**
* {@inheritdoc}
*/
public static function schema(FieldStorageDefinitionInterface $field_definition) {
return [
'columns' => [
'value' => [
'type' => 'varchar',
'length' => 255,
],
],
'indexes' => [
'value' => ['value'],
],
];
}
/**
* {@inheritdoc}
*/
protected function allowedValuesDescription() {
$description = '' . t('The possible values this field can contain. Enter one value per line, in the format key|label.');
$description .= '
' . t('The key is the stored value. The label will be used in displayed values and edit forms.');
$description .= '
' . t('The label is optional: if a line contains a single string, it will be used as key and label.');
$description .= '
';
$description .= '' . t('Allowed HTML tags in labels: @tags', ['@tags' => $this->displayAllowedTags()]) . '
';
return $description;
}
/**
* {@inheritdoc}
*/
protected static function validateAllowedValue($option) {
if (mb_strlen($option) > 255) {
return t('Allowed values list: each key must be a string at most 255 characters long.');
}
}
/**
* {@inheritdoc}
*/
protected static function castAllowedValue($value) {
return (string) $value;
}
}