--- /dev/null
+<?php
+
+namespace Drupal\form_test;
+
+use Drupal\Core\Form\ConfigFormBase;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Provides a test form object that needs arguments.
+ */
+class FormTestArgumentsObject extends ConfigFormBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'form_test_form_test_arguments_object';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function getEditableConfigNames() {
+ return ['form_test.object'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state, $arg = NULL) {
+ $form['element'] = ['#markup' => 'The FormTestArgumentsObject::buildForm() method was used for this form.'];
+
+ $form['bananas'] = [
+ '#type' => 'textfield',
+ '#default_value' => $arg,
+ '#title' => $this->t('Bananas'),
+ ];
+
+ $form['actions']['#type'] = 'actions';
+ $form['actions']['submit'] = [
+ '#type' => 'submit',
+ '#value' => $this->t('Save'),
+ ];
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function validateForm(array &$form, FormStateInterface $form_state) {
+ drupal_set_message($this->t('The FormTestArgumentsObject::validateForm() method was used for this form.'));
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ drupal_set_message($this->t('The FormTestArgumentsObject::submitForm() method was used for this form.'));
+ $this->config('form_test.object')
+ ->set('bananas', $form_state->getValue('bananas'))
+ ->save();
+ }
+
+}