Issue #3318149 by C-Logemann: Add UI for grant role invitations, first steps.

administer grant:

  title: 'Administer grant configuration'

  restrict access: true

access grant invite:

  title: 'Access grant invite'

  restrict access: true

    _permission: 'administer grant'

entity.grant.settings:

  path: 'admin/structure/grant'

  path: '/admin/structure/grant'

  defaults:

    _form: '\Drupal\grant\Form\GrantSettingsForm'

    _title: 'Grant'

  requirements:

    _permission: 'administer grant'

grant.grant_invite:

  path: '/grant/invite/{type}/{uuid}'

  defaults:

    _title: 'Grant invite'

    _form: 'Drupal\grant\Form\GrantInviteForm'

  requirements:

    _grant_access_check: 'access grant invite'

  options:

    no_cache: TRUE

<?php

namespace Drupal\grant\Form;

use Drupal\Core\Form\FormBase;

use Drupal\Core\Form\FormStateInterface;

use Drupal\user\Entity\Role;

/**

 * Provides a Grant form.

 */

class GrantInviteForm extends FormBase {

  /**

   * {@inheritdoc}

   */

  public function getFormId() {

    return 'grant_grant_invite';

  }

  /**

   * {@inheritdoc}

   */

  public function buildForm(array $form, FormStateInterface $form_state, $type = '', $uuid='') {

    $parameter = [];

    $current_user_id = \Drupal::currentUser()->id();

    $current_user = \Drupal\user\Entity\User::load($current_user_id);

    $current_user_uuid = $current_user->uuid();

    $parameter['entity_type'] = $type;

    $parameter['entity_uuid'] = $uuid;

    $parameter['user'] =  $current_user_uuid;

    $roles = Role::loadMultiple();

    foreach ($roles as $key => $role) {

       $value = $role->label();

       $roles_select[$key] = $value;

    }

    $form['roles'] = array(

      '#title' => 'Grant Role',

      '#type' => 'select',

      '#key_type' => 'associative',

      '#options' => $roles_select,

      '#description' => $this->t('Which role you want to assign.'),

       '#weight' => 1,

    );

    $form['email'] = [

      '#type' => 'email',

      '#title' => $this->t('Grant email address'),

      '#description' => $this->t('Email address of a person you want to invite.'),

      '#weight' => 0,

    ];

    $form['note'] = [

      '#type' => 'textfield',

      '#title' => $this->t('Note'),

      '#description' => $this->t('Optional adminitration note.'),

    ];

    $form['actions'] = [

      '#type' => 'actions',

    ];

    $form['actions']['submit'] = [

      '#type' => 'submit',

      '#value' => $this->t('Invite user'),

    ];

    $form_state->setStorage($parameter);

    return $form;

  }

  /**

   * {@inheritdoc}

   */

  public function validateForm(array &$form, FormStateInterface $form_state) {

    $parameter = $form_state->getStorage();

    // ToDo: Do validation

//    if (mb_strlen($form_state->getValue('message')) < 10) {

//      $form_state->setErrorByName('message', $this->t('Message should be at least 10 characters.'));

//    }

  }

  /**

   * {@inheritdoc}

   */

  public function submitForm(array &$form, FormStateInterface $form_state) {

    $parameter = $form_state->getStorage();

    $form_values = $form_state->getValues();

    $form_values['mail'];

    $grant = \Drupal\grant\Entity\Grant::create([

        'status' => 0,

        'user' => $current_user_uuid,

        'email' => $form_values['email'],

        'entity_type' => $parameter['entity_type'],

        'entity_uuid' => $parameter['entity_uuid'],

        'timer' => 1,

      ]);

    $grant->save();

    $this->messenger()->addStatus($this->t('The grant invitation has been saved.'));

    $form_state->setRedirect('<front>');

  }

}