Updated Drupal to 8.6. This goes with the following updates because it's possible...

[yaffs-website] / web / core / modules / system / tests / modules / form_test / src / Form / FormTestMachineNameValidationForm.php

diff --git a/web/core/modules/system/tests/modules/form_test/src/Form/FormTestMachineNameValidationForm.php b/web/core/modules/system/tests/modules/form_test/src/Form/FormTestMachineNameValidationForm.php
new file mode 100644 (file)
index 0000000..ff2dcaa
--- /dev/null
+++ b/web/core/modules/system/tests/modules/form_test/src/Form/FormTestMachineNameValidationForm.php
@@ -0,0 +1,141 @@
+<?php
+
+namespace Drupal\form_test\Form;
+
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Form to test whether machine name validation works with ajax requests.
+ */
+class FormTestMachineNameValidationForm extends FormBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'form_test_machine_name_validation_form';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    // Disable client-side validation so that we can test AJAX requests with
+    // invalid input.
+    $form['#attributes']['novalidate'] = 'novalidate';
+
+    $form['name'] = [
+      '#type' => 'textfield',
+      '#default_value' => $form_state->getValue('name'),
+      '#maxlength' => 50,
+      '#required' => TRUE,
+      '#title' => 'Name',
+    ];
+
+    // The default value simulates how an entity form works, which has default
+    // values based on an entity, which is updated in an afterBuild callback.
+    // During validation and after build, limit_validation_errors is not
+    // in effect, which means that getValue('id') does return a value, while it
+    // does not during the submit callback. Therefore, this test sets the value
+    // in ::buildAjaxSnackConfigureFormValidate() and then uses that as the
+    // default value, so that the default value and the value are identical.
+    $form['id'] = [
+      '#type' => 'machine_name',
+      '#default_value' => $form_state->get('id'),
+      '#maxlength' => 50,
+      '#required' => TRUE,
+      '#machine_name' => [
+        'exists' => [$this, 'load'],
+        'source' => ['name'],
+      ],
+    ];
+
+    // Test support for multiple machine names on the form. Although this has
+    // the default value duplicate it should not generate an error because it
+    // is the default value.
+    $form['id2'] = [
+      '#type' => 'machine_name',
+      '#default_value' => 'duplicate',
+      '#maxlength' => 50,
+      '#required' => TRUE,
+      '#machine_name' => [
+        'exists' => [$this, 'load'],
+        'source' => ['name'],
+      ],
+    ];
+
+    $form['snack'] = [
+      '#type' => 'select',
+      '#title' => $this->t('Select a snack'),
+      '#options' => [
+        'apple' => 'apple',
+        'pear' => 'pear',
+        'potato' => 'potato',
+      ],
+      '#required' => TRUE,
+      '#ajax' => [
+        'callback' => '::buildAjaxSnackConfigureForm',
+        'wrapper' => 'snack-config-form',
+        'method' => 'replace',
+        'effect' => 'fade',
+      ],
+    ];
+    $form['snack_configs'] = [
+      '#type' => 'container',
+      '#attributes' => [
+        'id' => 'snack-config-form',
+      ],
+      '#tree' => TRUE,
+    ];
+
+    $form['submit'] = [
+      '#type' => 'submit',
+      '#value' => 'Save',
+    ];
+    return $form;
+  }
+
+  /**
+   * Validate callback that forces a form rebuild.
+   */
+  public function buildAjaxSnackConfigureFormValidate(array $form, FormStateInterface $form_state) {
+    $form_state->set('id', $form_state->getValue('id'));
+  }
+
+  /**
+   * Submit callback that forces a form rebuild.
+   */
+  public function buildAjaxSnackConfigureFormSubmit(array $form, FormStateInterface $form_state) {
+    $form_state->setRebuild();
+  }
+
+  /**
+   * Handles changes to the selected snack configuration.
+   */
+  public function buildAjaxSnackConfigureForm(array $form, FormStateInterface $form_state) {
+    return $form['snack_configs'];
+  }
+
+  /**
+   * Loading stub for machine name
+   *
+   * @param $machine_name
+   * @return bool
+   */
+  public function load($machine_name) {
+    if (strpos($machine_name, 'duplicate') !== FALSE) {
+      return TRUE;
+    }
+
+    return FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $this->messenger()->addStatus('The form_test_machine_name_validation_form form has been submitted successfully.');
+  }
+
+}