function DataFieldRow::validateOptionsForm

Overrides RowPluginBase::validateOptionsForm

File

core/modules/rest/src/Plugin/views/row/DataFieldRow.php, line 122

Class

DataFieldRow

Plugin which displays fields as raw data.

Namespace

Code

public function validateOptionsForm(&$form, FormStateInterface $form_state) {
    // Collect an array of aliases to validate.
    $aliases = static::extractFromOptionsArray('alias', $form_state->getValue([
        'row_options',
        'field_options',
    ]));
    // If array filter returns empty, no values have been entered. Unique keys
    // should only be validated if we have some.
    if (($filtered = array_filter($aliases)) && array_unique($filtered) !== $filtered) {
        $form_state->setErrorByName('aliases', $this->t('All field aliases must be unique'));
    }
}